SETI: The Dream of Life in Space People have always gazed up at the stars in wonder. Their imaginations are filled with possibility as they think carefully how large the universe is and whether o...

HA

hạ anh

14 tháng 5 2021

SETI: The Dream of Life in Space People have always gazed up at the stars in wonder. Their imaginations are filled with possibility as they think carefully how large the universe is and whether or not we are alone in it. Of all the stars out there, are there intelligent beings on a planet circling one of the stars looking back at us and wondering the same thing? It is difficult to comprehend how many stars there are, or even to guess the possibilities of their being intelligent life....

Đọc tiếp

SETI: The Dream of Life in Space

      People have always gazed up at the stars in wonder. Their imaginations are filled with possibility as they think carefully how large the universe is and whether or not we are alone in it. Of all the stars out there, are there intelligent beings on a planet circling one of the stars looking back at us and wondering the same thing?
      It is difficult to comprehend how many stars there are, or even to guess the possibilities of their being intelligent life. Yet our interest in finding out is so strong that the search has been going on for over a century. What we consider the modem Search for Extraterrestrial Intelligence (SETI) began around 1960.
      The SETI project not what many people think it is. A simple explanation is that scientists study electromagnetic waves that are being emitted throughout the universe. When they are looking at these waves, they have a good idea of what are considered natural, random patterns the waves take. Therefore, they are searching for anything that does not appear to be randomly. If they were able to find something non-random, they would believe that an intelligent sources of some kind must be creating it. Inother words, intelligent life would have to exist somewhere else in the universe.
      While the SETI project will continue lo listen for signals from an intelligent sources, other progammes hope to find any source of life. The Mars rovers will continue to search for dry lake beds and other areas on the Red Planet that may have once held life. If any lifecan be found outside the earth, then we are probably on our way to finding life that could be similar to our own.
36. How long has the search for life in outer space been going on?
      A. For a few years                                                B. Not over two decades
      C. Since 1960                                                       D. More than a hundred years
37. What are the people in the SETIproject listening for?
      A. Random waves                                                B.Specific voice in the universe
      C. Patterns that are not random                            D. Special time signals
38. Which of the following sentences is NOT true?
      A. People have long wondered if we are alone in the universe.
      B. Scientists searching for any form or life that is found elsewhere than the earth.
      C.Signals from intelligent sources will most likely be random.
      D. The roverson Mars are looking for signs of life.
39. When did the modernsearch for intelligent life begin?
      A. It began around 1960.
      B. It has been going on since the beginning of time.
      C.There is no record of when it began.
      D. It has not actually begun yet.
40. Why are people searching for intelligent life in space?
      A. Because they want to meet aliens.
      B. Because they have a strong interest in it.
      C. Because it is the reason for people's existence.
      D. Because life must exist somewhere else.

#Tiếng anh lớp 9

1

K

Komorebi

14 tháng 5 2021

36D 37B 38C 39A 40D

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LQ

Lê Quỳnh Anh

3 tháng 6 2017

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 35 to 42. Life in the Universe Exobiology is the study of life that originates from outside of Earth. As yet, of course, no such a life forms have been found. Exobiologists, however, have done important work in the theoretical study of where life is most likely to evolve, and what those extraterrestrial life forms might be like.What sorts of planets...

Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 35 to 42.

Life in the Universe

Exobiology is the study of life that originates from outside of Earth. As yet, of course, no such a life forms have been found. Exobiologists, however, have done important work in the theoretical study of where life is most likely to evolve, and what those extraterrestrial life forms might be like.

What sorts of planets are most likely to develop life? Most scientists likely to agree that a habitable planet must be terrestrial, or rock-based, with liquid surface water and biogeochemical cycles that somewhat resemble the continuous movement ands transformation of materials in the environment. These cycles include the circulation of elements and nutrients upon which life and the Earth’climate depend. Since (as far as we know) all life is carbon-based, a stable carbon cycle is especially important.

The habitable zone is the region around a star in which planets can develop life. Assuming the need for liquid surface water, it follows that most stars around the size of our sun will be able to sustain habitable zones for billions of years. Stars that are larger than the sun are much hotter and burn out more quickly; life there may not have enough time to evolve. Stars that are smaller than the sun have different problems. First of all, planets is their habitable zones will be so close to the stars that they will be “tidally blocked”- that is one side of the planet will always face the star in perpetual daylight with the other side in perpetual night. Another possible obstacle to life on smaller stars is that they tend to vary in their luminosity, or brightness, due to flares and “star spots”. The variation can be large enough to have harmful effects on the ecosystem.
Of course, not all stars of the right size will give rise to life; they also must have terrestrial planets with the right kind of orbits. Most solar systems have more than one planet, which influence each other’s orbits with their own gravity. Therefore, in order to have a stable system with no planets flying out into space, the width of a star’s habitable zone. This means that for life to evolve, the largest possible number of life-supporting planets in any star’s habitable zone is two.
Finally, not all planets meeting the above conditions will necessarily develop life. One major threat is large, frequent asteroid and comet impacts, which will wipe out life each time it tries to evolve. The case of Earth teaches that having large gas gains, such as Saturn and Jupiter, in the outer part of the solar system can help keep a planet safe for life. Due to their strong gravitation, they tend to catch or deflect large objects before they can reach Earth

Which is the topic of the passage?

A. The search for intelligent life

B. Conditions necessary for life.

C. Characteristics of extraterrestrial life

D. Life in our solar system

#Mẫu giáo

1

DH

Dương Hoàn Anh

3 tháng 6 2017

Đáp án B

Đâu là chủ đề của đoạn văn?

A. Cuộc tìm kiếm cuộc sống thông minh.

B. Những điều kiện cần thiết cho sự sống.

C. Đặc điểm của cuộc sống ngoài Trái Đất.

D. Sự sống trong hệ mặt trời của chúng ta.

Giải thích: Đoạn văn nói về những điều kiện cần thiết để phát triển sự sống trên một hành tinh

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LQ

Lê Quỳnh Anh

11 tháng 1 2018

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 35 to 42. Life in the Universe Exobiology is the study of life that originates from outside of Earth. As yet, of course, no such a life forms have been found. Exobiologists, however, have done important work in the theoretical study of where life is most likely to evolve, and what those extraterrestrial life forms might be like.What sorts of planets...

Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 35 to 42.

Life in the Universe

Exobiology is the study of life that originates from outside of Earth. As yet, of course, no such a life forms have been found. Exobiologists, however, have done important work in the theoretical study of where life is most likely to evolve, and what those extraterrestrial life forms might be like.

What sorts of planets are most likely to develop life? Most scientists likely to agree that a habitable planet must be terrestrial, or rock-based, with liquid surface water and biogeochemical cycles that somewhat resemble the continuous movement ands transformation of materials in the environment. These cycles include the circulation of elements and nutrients upon which life and the Earth’climate depend. Since (as far as we know) all life is carbon-based, a stable carbon cycle is especially important.

The habitable zone is the region around a star in which planets can develop life. Assuming the need for liquid surface water, it follows that most stars around the size of our sun will be able to sustain habitable zones for billions of years. Stars that are larger than the sun are much hotter and burn out more quickly; life there may not have enough time to evolve. Stars that are smaller than the sun have different problems. First of all, planets is their habitable zones will be so close to the stars that they will be “tidally blocked”- that is one side of the planet will always face the star in perpetual daylight with the other side in perpetual night. Another possible obstacle to life on smaller stars is that they tend to vary in their luminosity, or brightness, due to flares and “star spots”. The variation can be large enough to have harmful effects on the ecosystem.
Of course, not all stars of the right size will give rise to life; they also must have terrestrial planets with the right kind of orbits. Most solar systems have more than one planet, which influence each other’s orbits with their own gravity. Therefore, in order to have a stable system with no planets flying out into space, the width of a star’s habitable zone. This means that for life to evolve, the largest possible number of life-supporting planets in any star’s habitable zone is two.
Finally, not all planets meeting the above conditions will necessarily develop life. One major threat is large, frequent asteroid and comet impacts, which will wipe out life each time it tries to evolve. The case of Earth teaches that having large gas gains, such as Saturn and Jupiter, in the outer part of the solar system can help keep a planet safe for life. Due to their strong gravitation, they tend to catch or deflect large objects before they can reach Earth

The word “which” in paragraph 3 refers to ______.

#Mẫu giáo

1

DH

Dương Hoàn Anh

11 tháng 1 2018

Đáp án C

Từ “which” ở đoạn 3 ám chỉ tới ______.

A. ngôi sao.

B. vùng.

C. khu vực

D. hành tinh.

Đọc cả câu: “The habitable zone is the region around a star in which planets can develop life” – (Vùng có sự sống là khu vực xung quanh một ngôi sao nơi mà những hành tinh có thể phát triển sự sống).

Như vậy “which” chỉ có thể là thay thế cho “region”.

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LQ

Lê Quỳnh Anh

20 tháng 2 2018

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 35 to 42. Life in the Universe Exobiology is the study of life that originates from outside of Earth. As yet, of course, no such a life forms have been found. Exobiologists, however, have done important work in the theoretical study of where life is most likely to evolve, and what those extraterrestrial life forms might be like.What sorts of planets...

Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 35 to 42.

Life in the Universe

Exobiology is the study of life that originates from outside of Earth. As yet, of course, no such a life forms have been found. Exobiologists, however, have done important work in the theoretical study of where life is most likely to evolve, and what those extraterrestrial life forms might be like.

What sorts of planets are most likely to develop life? Most scientists likely to agree that a habitable planet must be terrestrial, or rock-based, with liquid surface water and biogeochemical cycles that somewhat resemble the continuous movement ands transformation of materials in the environment. These cycles include the circulation of elements and nutrients upon which life and the Earth’climate depend. Since (as far as we know) all life is carbon-based, a stable carbon cycle is especially important.

The habitable zone is the region around a star in which planets can develop life. Assuming the need for liquid surface water, it follows that most stars around the size of our sun will be able to sustain habitable zones for billions of years. Stars that are larger than the sun are much hotter and burn out more quickly; life there may not have enough time to evolve. Stars that are smaller than the sun have different problems. First of all, planets is their habitable zones will be so close to the stars that they will be “tidally blocked”- that is one side of the planet will always face the star in perpetual daylight with the other side in perpetual night. Another possible obstacle to life on smaller stars is that they tend to vary in their luminosity, or brightness, due to flares and “star spots”. The variation can be large enough to have harmful effects on the ecosystem.
Of course, not all stars of the right size will give rise to life; they also must have terrestrial planets with the right kind of orbits. Most solar systems have more than one planet, which influence each other’s orbits with their own gravity. Therefore, in order to have a stable system with no planets flying out into space, the width of a star’s habitable zone. This means that for life to evolve, the largest possible number of life-supporting planets in any star’s habitable zone is two.
Finally, not all planets meeting the above conditions will necessarily develop life. One major threat is large, frequent asteroid and comet impacts, which will wipe out life each time it tries to evolve. The case of Earth teaches that having large gas gains, such as Saturn and Jupiter, in the outer part of the solar system can help keep a planet safe for life. Due to their strong gravitation, they tend to catch or deflect large objects before they can reach Earth

In can be inferred from paragraph 4 that______.

A. most stars have more than two planets in their habitable zone

B. no star has more than two planets in its habitable zone

C. it is not possible for a star to have three planets with life on them

D. for life to develop, a star must have at least two planets in its habitable zone

#Mẫu giáo

1

DH

Dương Hoàn Anh

20 tháng 2 2018

Đáp án C

Có thể được suy ra từ đoạn 4 rằng______.

A. Đa số các ngôi sao có nhiều hơn hai hành tinh nằm trong vùng có sự sống của chúng.

B. Không có ngôi sao nào có nhiều hơn hai hành tinh nằm trong vùng có sự sống của nó.

C. Không thể có một ngôi sao có ba hành tinh có sự sống.

D. Để cho sự sống phát triển, một ngôi sao phải có ít nhất hai hành tinh nằm trong vùng có sự sống của nó.

Dẫn chứng ở câu cuối- đoạn 4: “This means that for life to evolve, the largest possible number of life-supporting planets in any star’s habitable zone is two” – (Điều đó có nghĩa là để phát triển sự sống, con số lớn nhất có thể của các hành tinh có điều kiện hỗ trợ sự sống nằm trong vùng có sự sống của một ngôi sao bất kì luôn là 2) => Một ngôi sao có nhiều nhất 2 hành tinh có sự sống nằm trong “habitable zone” của nó.

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DM

Dương Minh

29 tháng 10 2019

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 35 to 42.Life in the UniverseExobiology is the study of life that originates from outside of Earth. As yet, of course, no such life forms have been found. Exobiologists, however, have done important work in the theoretical study of where life is most likely to evolve, and what those extrateưestrial life forms might be like.What sorts of planets are most...

Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 35 to 42.

Life in the Universe

Exobiology is the study of life that originates from outside of Earth. As yet, of course, no such life forms have been found. Exobiologists, however, have done important work in the theoretical study of where life is most likely to evolve, and what those extrateưestrial life forms might be like.

What sorts of planets are most likely to develop life? Most scientists agree that a habitable planet must be terrestrial, or rock-based, with liquid surface water and biogeochemical cycles that somewhat resemble Earth’s. Water is an important solvent involved in many biological processes. Biogeochemical cycles are the continuous movement and transformation of materials in the environment. These cycles include the circulation of elements and nutrients upon which life and the Earth’s climate depend. Since (as far as we know) all life is carbon-based, a stable carbon cycle is especially important.

The habitable zone is the region around a star in which planets can develop life. Assuming the need for liquid surface water, it follows that most stars around the size of our sun will be able to sustain habitable zones for billions of years. Stars that are larger than the sun are much hotter and bum out more quickly; life there may not have enough time to evolve. Stars that are smaller than the sun have different problem. First of all, planets in their habitable zones will be so close to the star that they will be “tidally locked” – that is one side of the planet will always face the star in perpetual daylight with the other side in the perpetual night. Another possible obstacle to life on smaller stars is that they tend to vary in their luminosity, or brightness, due to flares and “star spots”. The variation can be large enough to have harmful effects on the ecosystem.

Of course, not all stars of the right size will give rise to life; they also must have terrestrial planets with the right kind of orbits. Most solar systems have more than one planet, which influence each other’s orbits with their own gravity. Therefore, in order to have a stable system with no planets flying out into space, the orbits must be a good distance from one another. Interestingly, the amount of space needed is roughly the width of a star’s habitable zone. This means that for life to evolve, the largest possible number of life-supporting planets in any star’s habitable zone is two.

Finally, not all planets meeting the above conditions will necessarily develop life. One major threat is large, frequent asteroid and comet impacts, which will wipe out life each time it tries to evolve. The case of Earth teaches that having large gas giants, such as Saturn and Jupiter,.in the outer part of the solar system can help keep a planet safe for life. Due to their strong gravitation, they tend to catch or deflect large objects before they can reach Earth

What is the topic of the passage?

A. The search for intelligent life

B. Conditions necessary for life

C. Characteristics of extraterrestrial life

D. Life in our solar system

#Mẫu giáo

1

NH

Nguyen Hoang Hai

29 tháng 10 2019

Đáp án B

Kiến thức: Đọc hiểu

Giải thích:

Chủ đề của đoạn văn là gì?

A. Cuộc tìm kiếm cuộc sống thông minh B. Điều kiện cần thiết cho sự sống.

C. Đặc điểm của sự sống ngoài Trái đất D. Sự sống trong hệ mặt trời của chúng ta.

Thông tin: Exobiology is the study of life that originates from outside of Earth.

Tạm dịch: Sinh học ngoài Trái đất là một nghiên cứu về cuộc sống từ bên ngoài bề mặt Trái Đất

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LQ

Lê Quỳnh Anh

31 tháng 1 2017

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 35 to 42.Life in the UniverseExobiology is the study of life that originates from outside of Earth. As yet, of course, no such life forms have been found. Exobiologists, however, have done important work in the theoretical study of where life is most likely to evolve, and what those extrateưestrial life forms might be like.What sorts of planets are most...

Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 35 to 42.

Life in the Universe

Exobiology is the study of life that originates from outside of Earth. As yet, of course, no such life forms have been found. Exobiologists, however, have done important work in the theoretical study of where life is most likely to evolve, and what those extrateưestrial life forms might be like.

What sorts of planets are most likely to develop life? Most scientists agree that a habitable planet must be terrestrial, or rock-based, with liquid surface water and biogeochemical cycles that somewhat resemble Earth’s. Water is an important solvent involved in many biological processes. Biogeochemical cycles are the continuous movement and transformation of materials in the environment. These cycles include the circulation of elements and nutrients upon which life and the Earth’s climate depend. Since (as far as we know) all life is carbon-based, a stable carbon cycle is especially important.

The habitable zone is the region around a star in which planets can develop life. Assuming the need for liquid surface water, it follows that most stars around the size of our sun will be able to sustain habitable zones for billions of years. Stars that are larger than the sun are much hotter and bum out more quickly; life there may not have enough time to evolve. Stars that are smaller than the sun have different problem. First of all, planets in their habitable zones will be so close to the star that they will be “tidally locked” – that is one side of the planet will always face the star in perpetual daylight with the other side in the perpetual night. Another possible obstacle to life on smaller stars is that they tend to vary in their luminosity, or brightness, due to flares and “star spots”. The variation can be large enough to have harmful effects on the ecosystem.

Of course, not all stars of the right size will give rise to life; they also must have terrestrial planets with the right kind of orbits. Most solar systems have more than one planet, which influence each other’s orbits with their own gravity. Therefore, in order to have a stable system with no planets flying out into space, the orbits must be a good distance from one another. Interestingly, the amount of space needed is roughly the width of a star’s habitable zone. This means that for life to evolve, the largest possible number of life-supporting planets in any star’s habitable zone is two.

Finally, not all planets meeting the above conditions will necessarily develop life. One major threat is large, frequent asteroid and comet impacts, which will wipe out life each time it tries to evolve. The case of Earth teaches that having large gas giants, such as Saturn and Jupiter,.in the outer part of the solar system can help keep a planet safe for life. Due to their strong gravitation, they tend to catch or deflect large objects before they can reach Earth.
Question:What is the topic of the passage?

A. The search for intelligent life

B. Conditions necessary for life

C. Characteristics of extraterrestrial life

D. Life in our solar system

#Mẫu giáo

1

DH

Dương Hoàn Anh

31 tháng 1 2017

Đáp án B

Kiến thức: Đọc hiểu

Giải thích:

Chủ đề của đoạn văn là gì?

A. Cuộc tìm kiếm cuộc sống thông minh B. Điều kiện cần thiết cho sự sống.

C. Đặc điểm của sự sống ngoài Trái đất D. Sự sống trong hệ mặt trời của chúng ta.

Thông tin: Exobiology is the study of life that originates from outside of Earth.

Tạm dịch: Sinh học ngoài Trái đất là một nghiên cứu về cuộc sống từ bên ngoài bề mặt Trái Đất

Đúng(0)

LQ

Lê Quỳnh Anh

28 tháng 4 2019

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 35 to 42.Life in the Universe Exobiology is the study of life that originates from outside of Earth. As yet, of course, no such life forms have been found. Exobiologists, however, have done important work in the theoretical study of where life is most likely to evolve, and what those extrateưestrial life forms might be like. What sorts of planets...

Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 35 to 42.

Life in the Universe

Exobiology is the study of life that originates from outside of Earth. As yet, of course, no such life forms have been found. Exobiologists, however, have done important work in the theoretical study of where life is most likely to evolve, and what those extrateưestrial life forms might be like.

What sorts of planets are most likely to develop life? Most scientists agree that a habitable planet must be terrestrial, or rock-based, with liquid surface water and biogeochemical cycles that somewhat resemble Earth’s. Water is an important solvent involved in many biological processes. Biogeochemical cycles are the continuous movement and transformation of materials in the environment. These cycles include the circulation of elements and nutrients upon which life and the Earth’s climate depend. Since (as far as we know) all life is carbon-based, a stable carbon cycle is especially important.

The habitable zone is the region around a star in which planets can develop life. Assuming the need for liquid surface water, it follows that most stars around the size of our sun will be able to sustain habitable zones for billions of years. Stars that are larger than the sun are much hotter and bum out more quickly; life there may not have enough time to evolve. Stars that are smaller than the sun have different problem. First of all, planets in their habitable zones will be so close to the star that they will be “tidally locked” – that is one side of the planet will always face the star in perpetual daylight with the other side in the perpetual night. Another possible obstacle to life on smaller stars is that they tend to vary in their luminosity, or brightness, due to flares and “star spots”. The variation can be large enough to have harmful effects on the ecosystem.

Of course, not all stars of the right size will give rise to life; they also must have terrestrial planets with the right kind of orbits. Most solar systems have more than one planet, which influence each other’s orbits with their own gravity. Therefore, in order to have a stable system with no planets flying out into space, the orbits must be a good distance from one another. Interestingly, the amount of space needed is roughly the width of a star’s habitable zone. This means that for life to evolve, the largest possible number of life-supporting planets in any star’s habitable zone is two.

Finally, not all planets meeting the above conditions will necessarily develop life. One major threat is large, frequent asteroid and comet impacts, which will wipe out life each time it tries to evolve. The case of Earth teaches that having large gas giants, such as Saturn and Jupiter,.in the outer part of the solar system can help keep a planet safe for life. Due to their strong gravitation, they tend to catch or deflect large objects before they can reach Earth.

What is the topic of the passage?

A. The search for intelligent life

B. Conditions necessary for life

C. Characteristics of extraterrestrial life

D. Life in our solar system

#Mẫu giáo

1

DH

Dương Hoàn Anh

28 tháng 4 2019

Đáp án B

Kiến thức: Đọc hiểu

Giải thích:

Chủ đề của đoạn văn là gì?

A. Cuộc tìm kiếm cuộc sống thông minh

B. Điều kiện cần thiết cho sự sống.

C. Đặc điểm của sự sống ngoài Trái đất

D. Sự sống trong hệ mặt trời của chúng ta.

Thông tin: Exobiology is the study of life that originates from outside of Earth.

Tạm dịch: Sinh học ngoài Trái đất là một nghiên cứu về cuộc sống từ bên ngoài bề mặt Trái Đất

Đúng(0)

LQ

Lê Quỳnh Anh

2 tháng 7 2019

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 35 to 42. Life in the Universe Exobiology is the study of life that originates from outside of Earth. As yet, of course, no such a life forms have been found. Exobiologists, however, have done important work in the theoretical study of where life is most likely to evolve, and what those extraterrestrial life forms might be like.What sorts of planets...

Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 35 to 42.

Life in the Universe

Exobiology is the study of life that originates from outside of Earth. As yet, of course, no such a life forms have been found. Exobiologists, however, have done important work in the theoretical study of where life is most likely to evolve, and what those extraterrestrial life forms might be like.

What sorts of planets are most likely to develop life? Most scientists likely to agree that a habitable planet must be terrestrial, or rock-based, with liquid surface water and biogeochemical cycles that somewhat resemble the continuous movement ands transformation of materials in the environment. These cycles include the circulation of elements and nutrients upon which life and the Earth’climate depend. Since (as far as we know) all life is carbon-based, a stable carbon cycle is especially important.

The habitable zone is the region around a star in which planets can develop life. Assuming the need for liquid surface water, it follows that most stars around the size of our sun will be able to sustain habitable zones for billions of years. Stars that are larger than the sun are much hotter and burn out more quickly; life there may not have enough time to evolve. Stars that are smaller than the sun have different problems. First of all, planets is their habitable zones will be so close to the stars that they will be “tidally blocked”- that is one side of the planet will always face the star in perpetual daylight with the other side in perpetual night. Another possible obstacle to life on smaller stars is that they tend to vary in their luminosity, or brightness, due to flares and “star spots”. The variation can be large enough to have harmful effects on the ecosystem.
Of course, not all stars of the right size will give rise to life; they also must have terrestrial planets with the right kind of orbits. Most solar systems have more than one planet, which influence each other’s orbits with their own gravity. Therefore, in order to have a stable system with no planets flying out into space, the width of a star’s habitable zone. This means that for life to evolve, the largest possible number of life-supporting planets in any star’s habitable zone is two.
Finally, not all planets meeting the above conditions will necessarily develop life. One major threat is large, frequent asteroid and comet impacts, which will wipe out life each time it tries to evolve. The case of Earth teaches that having large gas gains, such as Saturn and Jupiter, in the outer part of the solar system can help keep a planet safe for life. Due to their strong gravitation, they tend to catch or deflect large objects before they can reach Earth

It can be inferred from the paragraph 3 that ______.

A. the Earth is in the sun’s habitable zone

B. the Earth is tidally locked to the sun.

C. the sun varies in its luminosity.

D. variations in luminosity help life to develop

#Mẫu giáo

1

DH

Dương Hoàn Anh

2 tháng 7 2019

Đáp án A

Có thể được suy ra từ đoạn 3 rằng ______.

A. Trái đất nằm trong vùng có thể sinh sống của mặt trời.

B. Trái đất bị khóa chặt với mặt trời.

C. Mặt trời thay đổi theo độ sáng.

D. Sự biến đổi trong độ sáng giúp sự sống phát triển.

Được suy ra từ 2 câu đầu- đoạn 3: “The habitable zone is the region around a star in which planets can develop life. Assuming the need for liquid surface water, it follows that most stars around the size of our sun will be able to sustain habitable zones for billions of years” – (Vùng có sự sống là khu vực xung quanh một ngôi sao nơi mà các hành tinh có thể phát triển sự sống. Đảm đương nhu cầu về chất lỏng chảy trên bề mặt, nó cho phép rằng hầu hết những ngôi sao có kích cỡ tương đương với mặt trời của chúng ta có thể duy trì vùng có sự sống qua hành tỉ năm) => Trái đất có sự sống là do nó nằm trong “habitable zones” của Mặt trời, mà “habitable zones” đó được Mặt trời duy trì qua hàng tỉ năm

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DM

Dương Minh

6 tháng 3 2019

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 35 to 42.Life in the UniverseExobiology is the study of life that originates from outside of Earth. As yet, of course, no such life forms have been found. Exobiologists, however, have done important work in the theoretical study of where life is most likely to evolve, and what those extrateưestrial life forms might be like.What sorts of planets are most...

Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 35 to 42.

Life in the Universe

Exobiology is the study of life that originates from outside of Earth. As yet, of course, no such life forms have been found. Exobiologists, however, have done important work in the theoretical study of where life is most likely to evolve, and what those extrateưestrial life forms might be like.

What sorts of planets are most likely to develop life? Most scientists agree that a habitable planet must be terrestrial, or rock-based, with liquid surface water and biogeochemical cycles that somewhat resemble Earth’s. Water is an important solvent involved in many biological processes. Biogeochemical cycles are the continuous movement and transformation of materials in the environment. These cycles include the circulation of elements and nutrients upon which life and the Earth’s climate depend. Since (as far as we know) all life is carbon-based, a stable carbon cycle is especially important.

The habitable zone is the region around a star in which planets can develop life. Assuming the need for liquid surface water, it follows that most stars around the size of our sun will be able to sustain habitable zones for billions of years. Stars that are larger than the sun are much hotter and bum out more quickly; life there may not have enough time to evolve. Stars that are smaller than the sun have different problem. First of all, planets in their habitable zones will be so close to the star that they will be “tidally locked” – that is one side of the planet will always face the star in perpetual daylight with the other side in the perpetual night. Another possible obstacle to life on smaller stars is that they tend to vary in their luminosity, or brightness, due to flares and “star spots”. The variation can be large enough to have harmful effects on the ecosystem.

Of course, not all stars of the right size will give rise to life; they also must have terrestrial planets with the right kind of orbits. Most solar systems have more than one planet, which influence each other’s orbits with their own gravity. Therefore, in order to have a stable system with no planets flying out into space, the orbits must be a good distance from one another. Interestingly, the amount of space needed is roughly the width of a star’s habitable zone. This means that for life to evolve, the largest possible number of life-supporting planets in any star’s habitable zone is two.

Finally, not all planets meeting the above conditions will necessarily develop life. One major threat is large, frequent asteroid and comet impacts, which will wipe out life each time it tries to evolve. The case of Earth teaches that having large gas giants, such as Saturn and Jupiter,.in the outer part of the solar system can help keep a planet safe for life. Due to their strong gravitation, they tend to catch or deflect large objects before they can reach Earth.

The word “which” in paragraph 3 refers to

A. star

B. zone

C. region

D. planet

#Mẫu giáo

1

NH

Nguyen Hoang Hai

6 tháng 3 2019

Đáp án C

Kiến thức: Đọc hiểu

Giải thích:

Từ "which" trong đoạn 3 thay thế cho

A. ngôi sao B. Vùng C. khu vực D. hành tinh

từ "which" thay thế cho cụm từ trước đó là "region"

Thông tin: The habitable zone is the region around a star in which planets can develop life.

Tạm dịch: Vùng có thể sinh sống là khu vực quanh những ngôi sao nở nơi mà hành tinh có thể phát triển sự sống.

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LQ

Lê Quỳnh Anh

30 tháng 5 2019

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 35 to 42.Life in the Universe Exobiology is the study of life that originates from outside of Earth. As yet, of course, no such life forms have been found. Exobiologists, however, have done important work in the theoretical study of where life is most likely to evolve, and what those extrateưestrial life forms might be like. What sorts of planets...

Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 35 to 42.

Life in the Universe

Exobiology is the study of life that originates from outside of Earth. As yet, of course, no such life forms have been found. Exobiologists, however, have done important work in the theoretical study of where life is most likely to evolve, and what those extrateưestrial life forms might be like.

What sorts of planets are most likely to develop life? Most scientists agree that a habitable planet must be terrestrial, or rock-based, with liquid surface water and biogeochemical cycles that somewhat resemble Earth’s. Water is an important solvent involved in many biological processes. Biogeochemical cycles are the continuous movement and transformation of materials in the environment. These cycles include the circulation of elements and nutrients upon which life and the Earth’s climate depend. Since (as far as we know) all life is carbon-based, a stable carbon cycle is especially important.

The habitable zone is the region around a star in which planets can develop life. Assuming the need for liquid surface water, it follows that most stars around the size of our sun will be able to sustain habitable zones for billions of years. Stars that are larger than the sun are much hotter and bum out more quickly; life there may not have enough time to evolve. Stars that are smaller than the sun have different problem. First of all, planets in their habitable zones will be so close to the star that they will be “tidally locked” – that is one side of the planet will always face the star in perpetual daylight with the other side in the perpetual night. Another possible obstacle to life on smaller stars is that they tend to vary in their luminosity, or brightness, due to flares and “star spots”. The variation can be large enough to have harmful effects on the ecosystem.

Of course, not all stars of the right size will give rise to life; they also must have terrestrial planets with the right kind of orbits. Most solar systems have more than one planet, which influence each other’s orbits with their own gravity. Therefore, in order to have a stable system with no planets flying out into space, the orbits must be a good distance from one another. Interestingly, the amount of space needed is roughly the width of a star’s habitable zone. This means that for life to evolve, the largest possible number of life-supporting planets in any star’s habitable zone is two.

Finally, not all planets meeting the above conditions will necessarily develop life. One major threat is large, frequent asteroid and comet impacts, which will wipe out life each time it tries to evolve. The case of Earth teaches that having large gas giants, such as Saturn and Jupiter,.in the outer part of the solar system can help keep a planet safe for life. Due to their strong gravitation, they tend to catch or deflect large objects before they can reach Earth.

The word “sustain” in paragraph 3 could best be replaced by

A. assist

B. have

C. need

D. experience

#Mẫu giáo

1

DH

Dương Hoàn Anh

30 tháng 5 2019

Đáp án B

Kiến thức: Đọc hiểu

Từ "sustain" trong đoạn 3 có thể được thay thế bằng từ:

A. có thể có

B. có

C. cần

D. kinh nghiệm

Thông tin: … It follows that most stars around the size of our sun will be able to sustain habitable zones…

Tạm dịch: Theo đó, hầu hết các ngôi sao xung quanh vùng mặt trời của chúng ta sẽ có thể có khu vực sống được…

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