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Unlike buried treasure and some minerals, fossils are usually not valuable in themselves. However, most of the fossils you find will be of greatest value to you. They will help you learn much about the geologic history of the earth and its inhabitants.

If it were not for fossils, we would have no way of knowing about the animals that once roamed the earth or that once crawled on the bottom of the ancient seas. In fact, we would not even know for sure that there were once seas in some regions if it were not for the many fossils of sea animals that we find there.

You can look at some fossils and see for yourself the shape of the ancient animals. Even if you collect only bits of one kind of fossil, you may still be able to tell what it looked like. Making sense out of fossil bits is a little like working a jigsaw puzzle. Sometimes you will lose pieces, but you can still recognize the picture and even use your imagination to fill in missing details. The habits of ancient sea animals are not so easy to determine. Therefore, scientists study the structure and the habits of similar living animals to learn what the ancient ones must have been like. There are some things, however, that neither the study of fossils nor the study of living animals can tell us. For example, no one knows what colour most ancient sea animals were. Also, since the soft parts disappeared soon after death, many details of their internal structure are unknown. So the pictures of ancient sea creatures (as well as dinosaurs!) are what scientists think the animals looked like. Reconstructing the life of an ancient sea animal on the basis of fossil evidence and the characteristics of similar living animals is a little like relying on circumstantial evidence in court.

1. This passage is mainly about animals that __________.

A. have very tough hides

B. once lived on the earth

C. inhabit the seas of today

D. are becoming extinct

2. With the help of fossils we can __________.

A. reconstruct life of the past

B. predict the future

C. explain the changes of the seasons

D. save some species of animals from extinction

3. Many details of ancient animals are lacking because __________.

A. many species have not been found

B. volcanic disasters have permanently buried many fossils

C.many fossils lie in deep water and cannot be recovered

D. soon after death the soft parts of the body decay

49. To “determine" in the passage is closest in meaning to __________.

A. come across

B. study

C. find out

D. imitate

50. This passage implies that a scientist's evaluation of the past is based on __________.

A. laboratory experiments with live animals

B. a few facts mixed with a lot of opinions

C. predictions made in the past and present

D. field studies of our society

1
4 tháng 7 2019

1 B. once lived on the earth

2 A. reconstruct life of the past

3 D. soon after death the soft parts of the body decay

4 C. find out

5 B. a few facts mixed with a lot of opinions

Have you ever asked yourself why it is that we (1) work? If it is, as some people say, just a question of money, would you be prepared to do any job as long as you (2) ______________________ a lot, even if it involved working for long hours in appalling (3) ______________________? Or are you perhaps more interested in the (4) ______________________ you get when you feel that you are good at your job? It's true that there is a great sense of (5) ______________________ behind, for example, the...
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Have you ever asked yourself why it is that we (1) work? If it is, as some people say, just a question of money, would you be prepared to do any job as long as you (2) ______________________ a lot, even if it involved working for long hours in appalling (3) ______________________? Or are you perhaps more interested in the (4) ______________________ you get when you feel that you are good at your job? It's true that there is a great sense of (5) ______________________ behind, for example, the creation of a well-made product, or the clinching of an important deal, though this might not be the (6) ______________________ if you were serving in a shop or delivering letters. Still, as long as the customers are satisfied, then you can (7) ______________________ yourself on a job well done, and feel that you have (8) ______________________ to the success of the company that (9) ______________________ you. On the other hand, would you feel that your work was more worthwhile if you received more praise from your employers? Would you feel happier if they paid you a (10) ______________________ or sent you to a sales conference in Tahiti? Or is praise unnecessary, as long as the job (11) ______________________ you with the company of other people, and the feeling that you belong to the group? Most of us are probably too (12) ______________________ working to wonder too much about this. One day perhaps we'll find that ideal job which gives life meaning, but until then we'll just get up every morning and keep on working.
Bạn nào nhanh nhất mình tik nha! Cảm ơn!

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Điền từ còn thiếu vào chỗ trống : Do you think the animals can understand each other ? The answer is yes . They can communicate (1) ........................ each other by signs and sounds . For example , dogs communicate in many ways . They not only bark , (2) .................... they howl , growl , snarl , and whine . They lift a paw , or bare their teeth . Other dogs can understand what these sounds and actions (3) ....................... Animals communicate with each other...
Đọc tiếp

Điền từ còn thiếu vào chỗ trống :

Do you think the animals can understand each other ?

The answer is yes . They can communicate (1) ........................ each other by signs and sounds . For example , dogs communicate in many ways . They not only bark , (2) .................... they howl , growl , snarl , and whine . They lift a paw , or bare their teeth . Other dogs can understand what these sounds and actions (3) .......................

Animals communicate with each other not only with sounds and movements , but with smell . Most animals that live in herds (4).......................on smell to keep together . And , of course , we know how dogs recognize each other by smell.

Apes are supposed (5) ...................among the most intelligent of animals , yet , they really have no better " language " than other animals . They make many sounds and expressions of the (6) .........................to communicate their feelings of anger or hunger or joy , but they have nothing like the words of human speech .

By the way , unlike human begings who have to learn (7) ........................talk , apes and other animals know their " language " by instinct . They will make the right kind of cries and sounds and expression even if they have never seen another animal like (8) ..............before . Birds , however , learn their way (9) .....................singing , at least in part . That is why a sparrow brought up among canaries will try (10) ......................like one . It has been learning the wrong " language "

1
5 tháng 4 2018

Do you think the animals can understand each other? The answer is yes. They can communicate to each other by signs and sounds. For example, dogs communicate in many ways. They not only bark, even they howl, growl, snarl, and whine. They lift a paw, or bare their teeth. Other dogs can understand what these sounds and actions mean_.
Animals communicate with each other not only with sounds and movements but with smell. Most animals that live in herds depend on smell to keep together. And, of course, we know how dogs recognize each other by smell.
Apes are supposed to be among the most intelligent of animals, yet, they really have no better “language” than other animals. They make many sounds and expressions of the mouth to communicate their feelings of anger or hunger or joy, but they have nothing like the words of human speech.
By the way, unlike human beings who have to learn how to talk, apes and other animals know their “language” by instinct. They will make the right kind of cries and sounds and expression even if they have never seen another animal like themselves before.
Birds, however, learn their way of singing, at least in part. That is why a sparrow brought up among canaries will try to sing like one. It has been learning the wrong “language”!

Use the words in brackets to form words, which fit the gaps FLORIDA Florida is the (south) ...........state of the United States of America. Many people live there and many others want to live there. Every, around 700 people move to Florida. Also, many (tour)............choose Florida for their holidays The sun shines in Florida for 300 days a year, so it is not (surprise)...........that most people spend a lot of time on the White...
Đọc tiếp

Use the words in brackets to form words, which fit the gaps

FLORIDA

Florida is the (south) ...........state of the United States of America. Many people live there and many others want to live there. Every, around 700 people move to Florida. Also, many (tour)............choose Florida for their holidays

The sun shines in Florida for 300 days a year, so it is not (surprise)...........that most people spend a lot of time on the White sands of Miami Beach

The Florida Everglades is the second largest national spark in America. Dangerous animals, such as alligators and (poison)............snakes, live there. Lots of bird there too, (include)...............pelicans and herons

The most popular tourist (attract)...............in Florida is Disney World in Orlando. More than 20 million people visit it every year. You can meet all Disney characters and go on lots of (excite)...............rides - everyone has a fantastic time. Make sure you spend at least one day here

Sea World is also in Orlando and you can see (perform)..............by whales and dolphins. you can also find out about Sea World is specical (breed)...............progamme and the Animal Rescue who will tell you how to help (danger)...............animals

1
1 tháng 8 2018

Use the words in brackets to form words, which fit the gaps

FLORIDA

Florida is the (south) ....southeast .......state of the United States of America. Many people live there and many others want to live there. Every, around 700 people move to Florida. Also, many (tour)....tourists ........choose Florida for their holidays

The sun shines in Florida for 300 days a year, so it is not (surprise)...surprised ........that most people spend a lot of time on the White sands of Miami Beach

The Florida Everglades is the second largest national spark in America. Dangerous animals, such as alligators and (poison)............snakes, live there. Lots of bird there too, (include).....including ..........pelicans and herons

The most popular tourist (attract)...attracted ............in Florida is Disney World in Orlando. More than 20 million people visit it every year. You can meet all Disney characters and go on lots of (excite).....excited ..........rides - everyone has a fantastic time. Make sure you spend at least one day here

Sea World is also in Orlando and you can see (perform)..............by whales and dolphins. you can also find out about Sea World is specical (breed)...............progamme and the Animal Rescue who will tell you how to help (danger)......dangerous .........animals

IV.Read the passage. Decide which of the following statements is True(T), Palse(F) or No information(NI) We are all destroying the Earth. The seas and rivers are too dirty to swim in it. These is so much smoke in the air that it's unhealthy to live in many of world's cities. We've cut down so many trees that there are now areas of wasteland all over the world. Farmers in many parts of Africa can not got grow enough to eat and in some Asian countries there is too little rice....
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IV.Read the passage. Decide which of the following statements is True(T), Palse(F) or No information(NI)

We are all destroying the Earth. The seas and rivers are too dirty to swim in it. These is so much smoke in the air that it's unhealthy to live in many of world's cities. We've cut down so many trees that there are now areas of wasteland all over the world. Farmers in many parts of Africa can not got grow enough to eat and in some Asian countries there is too little rice. Wild animals are quickly disappearing because we have killed too many. However, it isn't enough simply to talk about the problem. We must act before it's too late to do anything about it. Join us now. Save the Earth. This is too important to ignore

1._____ We can swim in the seas and rivers because they are not polluted now.

2._____ We are planting a lot of trees in areas of wasteland.

3._____ There isn’t rice enough to eat in many parts of Africa.

4._____ We are killing too many wild animals.

5._____ It’s not important to save the Earth.

6._____ It's pleasant to live in a lot of cities in the world now

7._____There are areas of wasteland now because many trees are cut down

8._____Rice can grow enough in many parts of Africa

9._____Animals are not as many now as they were a few years ago

10.____It's time to act if we want to save the Earth

1
13 tháng 11 2017

IV.Read the passage. Decide which of the following statements is True(T), Palse(F) or No information(NI)

We are all destroying the Earth. The seas and rivers are too dirty to swim in it. These is so much smoke in the air that it's unhealthy to live in many of world's cities. We've cut down so many trees that there are now areas of wasteland all over the world. Farmers in many parts of Africa can not got grow enough to eat and in some Asian countries there is too little rice. Wild animals are quickly disappearing because we have killed too many. However, it isn't enough simply to talk about the problem. We must act before it's too late to do anything about it. Join us now. Save the Earth. This is too important to ignore

1.__F___ We can swim in the seas and rivers because they are not polluted now.

2.___F__ We are planting a lot of trees in areas of wasteland.

3.__T___ There isn’t rice enough to eat in many parts of Africa.

4.___T__ We are killing too many wild animals.

5.__F___ It’s not important to save the Earth.

6.___F__ It's pleasant to live in a lot of cities in the world now

7.___T__There are areas of wasteland now because many trees are cut down

8.__F___Rice can grow enough in many parts of Africa

9.___T__Animals are not as many now as they were a few years ago

10.__T__It's time to act if we want to save the Earth

13 tháng 11 2017

thanks ạyeu

Read the following passage and choose the correct answer to each questions. Your mind's ability to bring back experiences you have had is your memory. There are two kind of remembering, recall and recognition. For instance, you may not be able to recall the poem you read yesterday in class, but if you see it again, you will know it instantly because you recognise it. Some few people have "total recall", often spoken of as photographic memory. A person with total recall can recite a whole...
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Read the following passage and choose the correct answer to each questions.

Your mind's ability to bring back experiences you have had is your memory. There are two kind of remembering, recall and recognition. For instance, you may not be able to recall the poem you read yesterday in class, but if you see it again, you will know it instantly because you recognise it.

Some few people have "total recall", often spoken of as photographic memory. A person with total recall can recite a whole page of a book he has read only once, or play a musical composition after hearing it once. This is very unusual, however, and most people have difficulty in remembering even the names they heard the day before. This is not because most people lack the ability to remember, but because they had not paid much attention to what they heard. They felt no personal reasons to remember. Having a personal reason for remembering is one of the most important factors in a good memory.

When you have a strong reason for remembering, concentrate as you read or listen, and try to connect the new information to things you already know. A detail is easy to remember when it fits into a whole that make sense. If you understand the entire history lesson before you try to remember any particular dates, your memory may surprise you.

1. One way to improve your memory is __________.

A. to ask other people to repeat something again and again

B. to have a camera with you all the time

C. to concentrate on what you listen or read

D. to learn everything you read or hear by heart

2. This article as a whole tells us about __________.

A. people who can remember whole pages

B. people who can’t remember names

C. your memory and how you may improve it

D. recognition as one way to remember things

3. A person with photographic memory __________.

A. can only remember things if he looks at a photograph

B. can remember every detail of what he sees or hears

C. can be found in mental hospitals

D. brings his camera everywhere he goes

4. Which of the following is NOT true according to the passage?

A. Most people lack the ability to remember.

B. Recognition and recall are the two kinds of memory.

C. Your memory is your ability to bring back experiences you had.

D. A person can remember things better if he has a strong reason for doing it.

5. While not directly stated, it may inferred from the article that __________.

A. details are more easily remembered than the whole

B. recall and recognition are the same

C. if one tries hard enough, he can remember as well as another

D. wanting to do a thing is very important to being able to do it

1
28 tháng 6 2019

1C 2C 3B 4A 5C

Since the world has become ............ (industry),there has been an increase in the number of animal species that have either become extinct or have neared extinction. Bengal tiger, for instance, which once roamed the jungles in vast number, now only about 2,300 and by the year 2025, their population is ............ (estimate)to be down to zero. What is alarming about the case of the Bengal tiger is that this ............ (extinct) will have been caused almost entirely by poachers who...
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Since the world has become ............ (industry),there has been an increase in the number of animal species that have either become extinct or have neared extinction. Bengal tiger, for instance, which once roamed the jungles in vast number, now only about 2,300 and by the year 2025, their population is ............ (estimate)to be down to zero. What is alarming about the case of the Bengal tiger is that this ............ (extinct) will have been caused almost entirely by poachers who according to some sources, are not interested in material gain but in ...........(p gratification. This is an example of the callousness that is part of what is causing the problem of extinction. Animals like Bengal tigers as well as other endangered species are a valuable part of the world's ecosystem. .................(nation) laws protecting these animals must be enacted to ensure their .......(survive) and the survival of our planet.
Countries around the world have begun to deal with the problem in ..........(vary) ways. Some countries, in order to circumvent the problem, have allocated large amounts of land to animal reserves. They then charge admission to help defray the costs of maintaining the parks and they often must also depend on world organizations for support. With the money they get, they can invest in equipment, and patrols to protect the animals. Another solution that is an attempt to stem the tide of animal extinction is an international boycott of products made from endangered species. This seems fairly effective but it will not, by itself, prevent animals from being hunted and killed.

5
3 tháng 1 2020

chỗ trống 4 : person

3 tháng 1 2020

ai giúp với xíu đi học r

10 tháng 4 2018

Cho dạng đúng của từ trong ngoặc:

If you want a truly(1.memory)........MEMORABLE........ holiday, book with us now! We can offer you a(2.person)........PERSONAL.......... service that no other company can. Our expert staff will provide you useful(3.inform)....INFORMATION........... about all of the(4.history).........HISTORICAL...... buildings and areas that you can visit. On some excursions, for a small(5.add)........ADDITIONAL........ change, we can even provide you with you own individual guide. A trip with us will give you an insight into the(6.cultural).......CULTURAL...... of the region. We try to make sure that nothing is(7.miss).......MISSED........ in order to make your trip a(8.marvel)......MARVELLOUS....... one that you will talk about for ages. We have something to offer both those(9.look).........LOOKING....... for a peaceful time taking it easy, and more(10.energy).....ENERGETIC........ people looking for the adventure of a lifetime

10 tháng 4 2018

Cho dạng đúng của từ trong ngoặc:

If you want a truly(1.memory)..MEMORABLE.............. holiday, book with us now! We can offer you a(2.person)..PERSONAL................ service that no other company can. Our expert staff will provide you useful(3.inform).INFORMATION.............. about all of the(4.history)...HISTORICAL............ buildings and areas that you can visit. On some excursions, for small(5.add).ADDITIONAL............... change, we can even provide you with you own individual guide. A trip with us will give you an insight into the(6.culture).CULTURAL............ of the region. We try to make sure that nothing is(7.miss).MISSING.............. in order to make your trip a(8.marvel)....MARVELOUS......... one that you will talk about for ages. We have something to offer both those(9.look)..LOOKING.............. for a peaceful time taking it easy, and more(10.energy)..ENERGETIC........... people looking for the adventure of a lifetime

Read and complete the passage by using the phrases or sentences given. A. how to cooperate with B. to get rid of all the negative energies C. go to the basket D. because your strength E. both your mind and your body F. the chance G. must be strong H. just for resting and sleeping There are a lot of activities that you can do in your leisure time. Some people are so tired of work that they prefer to use their free time (1).......... . Others spend their free time on their favourite...
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Read and complete the passage by using the phrases or sentences given.

A. how to cooperate with

B. to get rid of all the negative energies

C. go to the basket

D. because your strength

E. both your mind and your body

F. the chance

G. must be strong

H. just for resting and sleeping There are a lot of activities that you can do in your leisure time. Some people are so tired of work that they prefer to use their free time (1).......... . Others spend their free time on their favourite activities. Among different kinds of sports, I like basketball most. When you play basketball with your team mates, you have a chance (2) .......... that are piled up in you throughout work or study time. Your body is wholly involved. Basketball involves (3)........... In basketball, you need both stamina and speed to be a successful player. It's not that important if you're not tall (4)......... is of much more importance. Both feet and hands (5).......... . In addition, basketball is a team work, and this is what I like the most about this sport. You learn (6).......... other team mates. Sometimes, you need to sacrifice yourself by blocking the rival so that your team mate can find space to (7)......... and score. Passing the ball to other members of your team makes (8) .......... of winning higher and higher. All in all, basketball is so enjoyable and fun if you play it in a group, not individually.

2
29 tháng 8 2018

Read and complete the passage by using the phrases or sentences given.

A. how to cooperate with

B. to get rid of all the negative energies

C. go to the basket

D. because your strength

E. both your mind and your body

F. the chance

G. must be strong

H. just for resting and sleeping

There are a lot of activities that you can do in your leisure time. Some people are so tired of work that they prefer to use their free time (1)....H...... . Others spend their free time on their favourite activities. Among different kinds of sports, I like basketball most. When you play basketball with your team mates, you have a chance (2) ...B....... that are piled up in you throughout work or study time. Your body is wholly involved. Basketball involves (3).....E...... In basketball, you need both stamina and speed to be a successful player. It's not that important if you're not tall (4)....D..... is of much more importance. Both feet and hands (5).....G..... . In addition, basketball is a team work, and this is what I like the most about this sport. You learn (6).....A..... other team mates. Sometimes, you need to sacrifice yourself by blocking the rival so that your team mate can find space to (7)....C..... and score. Passing the ball to other members of your team makes (8) ......F.... of winning higher and higher. All in all, basketball is so enjoyable and fun if you play it in a group, not individually.

29 tháng 8 2018

A. how to cooperate with

B. to get rid of all the negative energies

C. go to the basket

D. because your strength

E. both your mind and your body

F. the chance

G. must be strong

H. just for resting and sleeping

There are a lot of activities that you can do in your leisure time. Some people are so tired of work that they prefer to use their free time (1)....H...... . Others spend their free time on their favourite activities. Among different kinds of sports, I like basketball most. When you play basketball with your team mates, you have a chance (2) .....B..... that are piled up in you throughout work or study time. Your body is wholly involved. Basketball involves (3)......E..... In basketball, you need both stamina and speed to be a successful player. It's not that important if you're not tall (4)...D...... is of much more importance. Both feet and hands (5)....G...... . In addition, basketball is a team work, and this is what I like the most about this sport. You learn (6)....A...... other team mates. Sometimes, you need to sacrifice yourself by blocking the rival so that your team mate can find space to (7)....C..... and score. Passing the ball to other members of your team makes (8) ....F...... of winning higher and higher. All in all, basketball is so enjoyable and fun if you play it in a group, not individually.

Complete the passage with the suitable words. Health is something we tend to ignore when we have it. When our body is rather well, we're hardly ever (1) .......... of it. But illness can come, even (2) ........... we are young. In fact, childhood has been a very vulnerable time. Many (3) ........ attacked children in particular and people knew very little about how to prevent such illness or how to (4) ........ them once they struck. The resuft was that many children died. About century ago,...
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Complete the passage with the suitable words.

Health is something we tend to ignore when we have it. When our body is rather well, we're hardly ever (1) .......... of it. But illness can come, even (2) ........... we are young. In fact, childhood has been a very vulnerable time. Many (3) ........ attacked children in particular and people knew very little about how to prevent such illness or how to (4) ........ them once they struck. The resuft was that many children died. About century ago, however, scientists found out about germs, and then everything (5) ........ The cause of many diseases (6) ........ known, and cures were developed. As this medical knowledge spread the world became (7).......... safer for children. The resuft is that whereas a hundred years ago the average man lived for 35 years. Nowadays, in many places of the world, people can expect to (8)........... for years. And what do we except by the years 2010 ? Undoubtedly, (9)....... science will continue to advance. Some people will be able to (10).......... medical problems that are unavoidable today.

1
18 tháng 7 2018

Complete the passage with the suitable words.

Health is something we tend to ignore when we have it. When our body is rather well, we're hardly ever (1) ..aware........ of it. But illness can come, even (2) .......when.... we are young. In fact, childhood has been a very vulnerable time. Many (3) ....diseases.... attacked children in particular and people knew very little about how to prevent such illness or how to (4) ...cure..... them once they struck. The resuft was that many children died. About century ago, however, scientists found out about germs, and then everything (5) .....changed... The cause of many diseases (6) ......was.. known, and cures were developed. As this medical knowledge spread the world became (7)......much.... safer for children. The resuft is that whereas a hundred years ago the average man lived for 35 years. Nowadays, in many places of the world, people can expect to (8)......live..... for years. And what do we except by the years 2010 ? Undoubtedly, (9)...medical.... science will continue to advance. Some people will be able to (10)......solve.... medical problems that are unavoidable today.