K
Khách

Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.

1 tháng 5 2018

Đáp án B

Kiến thức: Mệnh đề quan hệ

Giải thích:

Ta dùng mệnh đề quan hệ “which” để thay thế cho danh từ chỉ vật trong câu “instrument – it”

Tạm dịch: Một nhiệt kế là một dụng cụ. Chúng ta sử dụng nó để đo nhiệt độ.

= B. Một nhiệt kế là một công cụ được sử dụng để đo nhiệt độ.

 

 

11 tháng 6 2018

Đáp án B

Nhiệt kế là một dụng cụ. Chúng ta dùng nó để đo nhệt độ.

Nhiệt kế là một dụng cụ cái mà được dùng để đo nhiệt độ.

Dùng mệnh đề quan hệ và câu bị động

Read the followingpassage and mark the letter A, B, C or D onyour answer sheet to indicate the correct answer to each of the questionsStellar AstronomyMany parameters are used to describe a star. One of them is its temperature, which can be determined by simple observation; the color of a star and its temperature are related. Once the color of a star is identified, its temperature can be calculated through the use of scientific principles such as Wien’s Law.There are different types of stars...
Đọc tiếp

Read the followingpassage and mark the letter A, B, C or D onyour answer sheet to indicate the correct answer to each of the questions

Stellar Astronomy

Many parameters are used to describe a star. One of them is its temperature, which can be determined by simple observation; the color of a star and its temperature are related. Once the color of a star is identified, its temperature can be calculated through the use of scientific principles such as Wien’s Law.

There are different types of stars in the universe. For our purposes, we can classify them into two categories: variable and binary. Variable stars are those which show some degree of variability in their luminosity and magnitude. Luminosity refers to the amount of energy radiated by a star, while magnitude refers to its brightness. At time the degree of variability may be high, requiring a telescope with an equally high light- gathering power. This can be achieved by using a lens of large diameter, such as that of a reflecting telescope.

Binary stars are those found in pairs that revolve around a common center. The closest star to the sun, Proxima Centauri, is a binary star. To observe a binary star, the resolving power of a telescope - its ability to distinguish between two close objects having a small angular separation - must be very high.

Stellar astronomy is possible for a everyone, well beyond mere looking at the sky with the naked eye in order to identify constellations. With two basic of telescopes and rudimentary knowledge, much exploration can be achieved.

The temperature of a star can be determined by its

A. Size


 

B. Color


 

C. Movement


 

D.  Luminosity


 

1
21 tháng 1 2018

Đáp án là B.

Color. Ý trong đoạn 1: One of them is its temperature, which can be determined by simple observation; the color of a star and its temperature are related

Read the followingpassage and mark the letter A, B, C or D onyour answer sheet to indicate the correct answer to each of the questionsStellar AstronomyMany parameters are used to describe a star. One of them is its temperature, which can be determined by simple observation; the color of a star and its temperature are related. Once the color of a star is identified, its temperature can be calculated through the use of scientific principles such as Wien’s Law.There are different types of stars...
Đọc tiếp

Read the followingpassage and mark the letter A, B, C or D onyour answer sheet to indicate the correct answer to each of the questions

Stellar Astronomy

Many parameters are used to describe a star. One of them is its temperature, which can be determined by simple observation; the color of a star and its temperature are related. Once the color of a star is identified, its temperature can be calculated through the use of scientific principles such as Wien’s Law.

There are different types of stars in the universe. For our purposes, we can classify them into two categories: variable and binary. Variable stars are those which show some degree of variability in their luminosity and magnitude. Luminosity refers to the amount of energy radiated by a star, while magnitude refers to its brightness. At time the degree of variability may be high, requiring a telescope with an equally high light- gathering power. This can be achieved by using a lens of large diameter, such as that of a reflecting telescope.

Binary stars are those found in pairs that revolve around a common center. The closest star to the sun, Proxima Centauri, is a binary star. To observe a binary star, the resolving power of a telescope - its ability to distinguish between two close objects having a small angular separation - must be very high.

Stellar astronomy is possible for a everyone, well beyond mere looking at the sky with the naked eye in order to identify constellations. With two basic of telescopes and rudimentary knowledge, much exploration can be achieved.

Which of the following is true of variable stars?

A. They vary in brightness


 

B. They rotate around each other.


 

C. They vary in color.


 

D. The size of the telescope must vary in order to observe them.


 

1
26 tháng 4 2018

Đáp án là A.

Ý trong đoạn 2: Luminosity refers to the amount of energy radiated by a star, while magnitude refers to its brightness . Tính sáng đề cập đến lượng năng lượng bức xạ của một ngôi sao, trong khi cường độ đề cập đến độ sáng của nó

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 36 to 42.The principle of use and disuse states that those parts of organisms’ bodies that are used grow larger. Those parts that are not tend to wither away. It is an observed fact that when you exercise particular muscles, they grow. Those that are never used diminish. By examining a man’s body, we can tell which muscles he uses and which he does...
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 36 to 42.

The principle of use and disuse states that those parts of organisms’ bodies that are used grow larger. Those parts that are not tend to wither away. It is an observed fact that when you exercise particular muscles, they grow. Those that are never used diminish. By examining a man’s body, we can tell which muscles he uses and which he does not. We may even be able to guess his profession or his recreation. Enthusiasts of the ‘body-building’ cult make use of the principle of use and disuse to ‘build’ their bodies, almost like a piece of sculpture, into whatever unnatural shape is demanded by fashion in this peculiar minority culture. Muscles are not the only parts of the body that respond to use in this kind of way. Walk barefoot and you acquire harder skin on your soles. It is easy to tell a farmer from a bank teller by looking at their hands alone. The farmer’s hands are horny, hardened by long exposure to rough work. The teller’s hands are relatively soft.

The principle of use and disuse enables animals to become better at the job of surviving in their world, progressively better during their lifetime as a result of living in that world. Humans, through direct exposure to sunlight, or lack of it, develop a skin color which equips them better to survive in the particular local conditions. Too much sunlight is dangerous. Enthusiastic sunbathers with very fair skins are susceptible to skin cancer. Too little sunlight, on the other hand, leads to vitamin-D deficiency. The brown pigment melanin which is synthesized under the influence of sunlight, makes a screen to protect the underlying tissues from the harmful effects of further sunlight. If a suntanned person moves to a less sunny climate, the melanin disappears, and the body is able to benefit from what little sun there is. This can be represented as an instance of the principle of use and disuse: skin goes brown when it is “used’, and fades to white when it is not.

It can be inferred from the passage that the principle of use and disuse enables organisms to _____.

A. change their existence

B. automatically benefit 

C. better survive in their conditions

D. improve their lifetime

1
25 tháng 8 2017

Đáp án C

Nguyên tắc sử dụng và loại bỏ có thể khiến sinh vật:

A. thay đổi sự tồn tại của chúng

B. hưởng lợi một cách tự động

C. tồn tại tốt hơn trong điều kiện của chúng

D. cải thiện tuổi thọ của chúng

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 question from 18 to 25. The principle of use and disuse states that those parts of organisms' bodies that are used grown larger. Those parts that are not tend to wither away. It is an observed fact that when you exercise particular muscles, they grow. Those that are never used dimish. By examining a man's body, we can tell which muscles he uses and which he doesn't. We...
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 question from 18 to 25.

The principle of use and disuse states that those parts of organisms' bodies that are used grown larger. Those parts that are not tend to wither away. It is an observed fact that when you exercise particular muscles, they grow. Those that are never used dimish. By examining a man's body, we can tell which muscles he uses and which he doesn't. We may even be able to guess his profession or his reaction. Enthusiasts of the "body- building" cult make use of the principle of use and disuse to "build" their bodies, almost like a piece of sculpture, into whatever unnatural shape is demanded by fashion in this peculiar minority culture. Muscles are not the only parts of the body that respond to use in this kind of way. Walk barefoot and you acquire harder skin on your soles. It is easy to tell a farmer from a bank teller by looking at their hands alone. The farmer's hands are horny, hardened by long exposure to rough work. The teller’s hands are relatively soft.

The principle of use and disuse enables animals to become better at the job of surviving in their world, progressively better during their lifetime as a result of living in that world. Humans, through direct exposure to sunlight, or lack of it, develop a skin color which equips them better to survive in the particular local conditions.

Too much sunlight is dangerous. Enthusiastic sunbathers with very fair skins are susceptible to skin cancer. Too little sunlight, on the other hand, leads to vitamin-D deficiency and rickets. The brown pigment melanin which is synthesized under the influence of sunlight, makes a screen to protect the underlying tissues from the harmful effects of further sunlight. If a suntanned person moves to a less sunny climate, the melanin disappears, and the body is able to benefit from what little sun there is. This can be represented as an instance of the principle of use and disuse: skin goes brown when it is "used", and fades to white when it is not.

It can be inferred from the passage that the principle of use and disuse enables organisms to _______ 

A. change their existence

B. automatically benefit

C. survive in any condition

D. improve their lifetime

1
21 tháng 5 2019

Đáp án C.

Key word: inferred, principle of use and disuse enables organisms to.

Clue: “The principle of use and disuse enables animals to become better at the job of surviving in their world .... which equips them better to survive in the particular local conditions”: Nguyên tắc dùng và không dùng giúp cho động vật có thể thích nghi tốt hơn trong việc tồn tại ở thế giới của chúng... trang bị cho chúng để tồn tại trong những điều kiện cụ thể.

Phân tích đáp án:

A. change their existence: thay đổi sự tồn tại của chúng

B. automatically benefit: có lợi một cách tự động

C. survive in any condition: tồn tại ở bất kỳ tình trạng nào

D. improve their lifetime: cải thiện tuổi thọ

Dựa vào clue ta thấy đáp án chính xác là C.

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 following questionsThe principle of use and disuse states that those parts of organisms' bodies that are used grown larger. Those parts that are not tend to wither away. It is an observed fact that when you exercise  particular muscles, they grow. Those that are never used dimish. By examining a man's body, we can tell which muscles he uses and which he doesn't. We may...
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 following questions

The principle of use and disuse states that those parts of organisms' bodies that are used grown larger. Those parts that are not tend to wither away. It is an observed fact that when you exercise  particular muscles, they grow. Those that are never used dimish. By examining a man's body, we can tell which muscles he uses and which he doesn't. We may even be able to guess his profession or his reaction. Enthusiasts of the "body- building" cult make use of the principle of use and disuse to "build" their bodies, almost like a piece of sculpture, into whatever unnatural shape is demanded by fashion in this peculiar minority culture. Muscles are not the only parts of the body that respond to use in this kind of way. Walk barefoot and you acquire harder skin on your soles. It is easy to tell a farmer from a bank teller by looking at their hands alone. The farmer's hands are horny, hardened by long exposure to rough work. The teller's hands are relatively soft.

The principle of use and disuse enables animals to become better at the job of surviving in their world, progressively better during their lifetime as a result of living in that world. Humans, through direct exposure to sunlight, or lack of it, develop a skin color which equips them better to survive in the particular local conditions.

Too much sunlight is dangerous. Enthusiastic sunbathers with very fair skins are susceptible to skin cancer. Too little sunlight, on the other hand, leads to vitamin-D deficiency and rickets. The brown pigment melanin which is synthesized under the influence of sunlight, makes a screen to protect the underlying tissues from the harmful effects of further sunlight. If a suntanned person moves to a less sunny climate, the melanin disappears, and the body is able to benefit from what little sun there is. This can be represented as an instance of the principle of use and disuse: skin goes brown when it is "used", and fades to white when it is not.

 

It can be inferred from the passage that the principle of use and disuse enables organisms to ………

A. change their existence

B. automatically benefit

C. survive in any condition

D. improve their lifetime

1
29 tháng 3 2019

Đáp án : C

Thông tin ở câu đầu tiên của đoạn 2: “The principle of use and disuse enables animals to become better at the job of surviving in their world, progressively better during their lifetime as a result of living in that world.” Nguyên tắc sử dụng và không sử dụng giúp động vật hoàn thiện tốt hơn trong việc tồn tại, thích nghi trong thế giới với nhiều hoàn cảnh trên thế giới (survive in any condition)

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 following question from 18 to 25.          The principle of use and disuse states that those parts of organisms’ bodies that are used grown larger. Those parts that are not tend to wither away. It is an observed fact that when you exercise particular muscles, they grow. Those that are never used dimish. By examining a man’s body, we can tell which muscles he uses and...
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 following question from 18 to 25.

          The principle of use and disuse states that those parts of organisms’ bodies that are used grown larger. Those parts that are not tend to wither away. It is an observed fact that when you exercise particular muscles, they grow. Those that are never used dimish. By examining a man’s body, we can tell which muscles he uses and which he doesn’t. We may even be able to guess his profession or his reaction. Enthusiasts of the “body-building” cult make use of the principle of use and disuse to “build” their bodies, almost like a piece of sculpture, into whatever unnatural shape is demanded by fashion in this peculiar minority culture. Muscles are not the only parts of the body that respond to use in this kind of way. Walk barefoot and you acquire harder skin on your soles. It is easy to tell a famer from a bank teller by looking at their hands alone. The famer’s hands are horny, hardened by long exposure to rough work. The teller’s hands are relatively soft.

          The principle of use and disuse enables animals to become better at the job of surviving in their world, progressively better during their lifetime as result of living in that world. Humans, through direct exposure to sunlight, or lack of it, develop a skin color which equips them better to survive in the particular local conditions.

          Too much sunlight is dangerous. Enthusiastic sunbathers with very fair skins are susceptible to skin cancer. Too little sunlight, on the other hand, leads to vitamin-D deficiency and rickets. The brown pigment melanin which is synthesized under the influence of sunlight, makes a screen to protect the underlying tissues from the harmful effects of further sunlight. If a suntanned person moves to a less sunny climate, the melanin disappears, and the body is able to benefit from what little sun there is. This can be represented as an instance of the principle of use and disuse: skin goes brown when it is “used”, and fades to white when it is not.

It can be inferred from the passage that the principle of use and disuse enables organisms to________.

A. change their existence

B. automatically benefit

C. survive in any condition

D. improve their lifetime

1
5 tháng 12 2019

Đáp án C.

Key word: inferred, principle of use and disuse anables organisms to.

Clue: “The principle of use and disuse anables animals to become better at the job of surviving in their world…which equips them better to survive in the particular local conditions”: Nguyên tắc dùng và không dùng giúp cho động vật có thể thích nghi tốt hơn trong viêc tồn tại ở thế giới của chúng… trang bị cho chúng để tồn tại trong những điều kiện cụ thể.

Phân tích đáp án:

    A. change their existence: thay đổi sự tồn tại của chúng

    B. automatically: có lợi một cách tự nhiên

    C. survive in any condition: tồn tại ở bất kỳ tình trạng nào

    D. improve their lifetime: cải thiện tuổi thọ

Dựa vào clue ta thấy đáp án chính xác là C.

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 question from 18 to 25. The principle of use and disuse states that those parts of organisms' bodies that are used grown larger. Those parts that are not tend to wither away. It is an observed fact that when you exercise particular muscles, they grow. Those that are never used dimish. By examining a man's body, we can tell which muscles he uses and which he doesn't. We...
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 question from 18 to 25.

The principle of use and disuse states that those parts of organisms' bodies that are used grown larger. Those parts that are not tend to wither away. It is an observed fact that when you exercise particular muscles, they grow. Those that are never used dimish. By examining a man's body, we can tell which muscles he uses and which he doesn't. We may even be able to guess his profession or his reaction. Enthusiasts of the "body- building" cult make use of the principle of use and disuse to "build" their bodies, almost like a piece of sculpture, into whatever unnatural shape is demanded by fashion in this peculiar minority culture. Muscles are not the only parts of the body that respond to use in this kind of way. Walk barefoot and you acquire harder skin on your soles. It is easy to tell a farmer from a bank teller by looking at their hands alone. The farmer's hands are horny, hardened by long exposure to rough work. The teller’s hands are relatively soft.

The principle of use and disuse enables animals to become better at the job of surviving in their world, progressively better during their lifetime as a result of living in that world. Humans, through direct exposure to sunlight, or lack of it, develop a skin color which equips them better to survive in the particular local conditions.

Too much sunlight is dangerous. Enthusiastic sunbathers with very fair skins are susceptible to skin cancer. Too little sunlight, on the other hand, leads to vitamin-D deficiency and rickets. The brown pigment melanin which is synthesized under the influence of sunlight, makes a screen to protect the underlying tissues from the harmful effects of further sunlight. If a suntanned person moves to a less sunny climate, the melanin disappears, and the body is able to benefit from what little sun there is. This can be represented as an instance of the principle of use and disuse: skin goes brown when it is "used", and fades to white when it is not.

In the second paragraph, the author mentions sun tanning as an example of _______ 

A. humans improving their local condition

B. humans surviving in adverse conditions

C. humans using the principle of use and disuse

D. humans running the risk of skin cancer

1
15 tháng 9 2019

Đáp án C.

Key word: sun tanning, example of

Clue: “The principle of use and disuse enables animals to become better at the job of surviving in their world, progressively better during their lifetime as a result of living in that world. Humans, through direct exposure to sunlight, or lack of it, develop a skin color which equips them better to survive in the particular local conditions. Too much sunlight is dangerous”: Nguyên lí của việc dùng hay không dùng cho phép động vật trở nên tốt hơn trong việc tồn tại trong môi trường chúng sống, càng ngày càng tốt lên trong suốt cuộc đời của chúng như một kết quả của việc sống trong đó. Con người tiếp xúc trực tiếp với ánh nắng mặt trời hay thiếu ánh nắng đều phát triển một màu da để tồn tại tốt hơn trong môi trường địa phương đặc biệt.

Phân tích đáp án:

A. Humans improving their local condition: Con người cải thiện điều kiện ở địa phương của họ

B. Humans surviving in adverse conditions: Con người sống sót trong điều kiện bất lợi.

C. Humans using the principle of use and disuse: Con người sử dụng nguyên tắc sử dụng và không sử dụng.

D. Humans running the risk of skin cancer: Con người có nguy cơ ung thư da.

Trong clue ta thấy câu trước nói về quy luật sử dụng hay không sử dụng “ánh nắng” của con người nên câu sau phải là ví dụ cho việc này. Đáp án chính xác là C.

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 following questionsThe principle of use and disuse states that those parts of organisms' bodies that are used grown larger. Those parts that are not tend to wither away. It is an observed fact that when you exercise  particular muscles, they grow. Those that are never used dimish. By examining a man's body, we can tell which muscles he uses and which he doesn't. We may...
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 following questions

The principle of use and disuse states that those parts of organisms' bodies that are used grown larger. Those parts that are not tend to wither away. It is an observed fact that when you exercise  particular muscles, they grow. Those that are never used dimish. By examining a man's body, we can tell which muscles he uses and which he doesn't. We may even be able to guess his profession or his reaction. Enthusiasts of the "body- building" cult make use of the principle of use and disuse to "build" their bodies, almost like a piece of sculpture, into whatever unnatural shape is demanded by fashion in this peculiar minority culture. Muscles are not the only parts of the body that respond to use in this kind of way. Walk barefoot and you acquire harder skin on your soles. It is easy to tell a farmer from a bank teller by looking at their hands alone. The farmer's hands are horny, hardened by long exposure to rough work. The teller's hands are relatively soft.

The principle of use and disuse enables animals to become better at the job of surviving in their world, progressively better during their lifetime as a result of living in that world. Humans, through direct exposure to sunlight, or lack of it, develop a skin color which equips them better to survive in the particular local conditions.

Too much sunlight is dangerous. Enthusiastic sunbathers with very fair skins are susceptible to skin cancer. Too little sunlight, on the other hand, leads to vitamin-D deficiency and rickets. The brown pigment melanin which is synthesized under the influence of sunlight, makes a screen to protect the underlying tissues from the harmful effects of further sunlight. If a suntanned person moves to a less sunny climate, the melanin disappears, and the body is able to benefit from what little sun there is. This can be represented as an instance of the principle of use and disuse: skin goes brown when it is "used", and fades to white when it is not.

 

In the second paragraph, the author mentions sun tanning as an example of ………

A. humans improving their local condition

B. humans surviving in adverse conditions

C. humans using the principle of use and disuse

D. humans running the risk of skin cancer

1
23 tháng 8 2018

Đáp án : C

Câu đầu tiên có đề cập đến nguyên tắc sử dụng và không sử dụng đối với động vật và con người, câu đầu tiên đã đề cập The principle of use and disuse…

Vì thế sun tanning (a skin color) là một ví dụ của ứng dụng con người qua nguyên tắc sử dụng và không sử dụng (humans using the principle of use and disuse)