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IV.Read the passage carefully,and then do the follwing tasks.The healthy eating dietHealthy eating is about feeling great and having more energy.If you choose the right foods,you healthy diet will be a tasty diet,too.You can still enjoy your favourite sweet and salty foods,but too much sugar and salt is bad for your body.Dairy products like milk,cheese and yoghurt are great because they contain calcium and keep your teeth and bones healthy.You should choose low-fat dairy...
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IV.Read the passage carefully,and then do the follwing tasks.

The healthy eating diet

Healthy eating is about feeling great and having more energy.If you choose the right foods,you healthy diet will be a tasty diet,too.You can still enjoy your favourite sweet and salty foods,but too much sugar and salt is bad for your body.

Dairy products like milk,cheese and yoghurt are great because they contain calcium and keep your teeth and bones healthy.You should choose low-fat dairy products.

Meat,fish,eggs,beans and nuts are important,too.They keep our bodies healthy and they give us energy to work and play.

Whole grains are an important part of every meals.If you eat lots of whole grains,you will have a healthy heart.Whole grains are in bread,cereal,pasta,and rice.Dark break and brown rice are great sources of whole grains.

Fruit and vegetables are the most important part of a healthy diet.They are low in calories and full of vitamins.Eat lots of fruit and vegetables with every meal,and as snacks during the day.Fruit and vegetables with darker colours have more vitamins.

A.Find the underlined words in the text to match the meanings.

1.____________:an amount of energy.

2.____________:the power that your body gets from food.

3.____________:food that you eat between meals.

4.____________:It food is this,it tastes of sugar.

5.____________:It food is this,it tastes of salt.

6.____________:the types of food that you eat most often.

7.____________:things in food that we need to grow and be healthy.

8._____________:the palace where you get some thing from.

B.Answer the following questions.

1.What does the healthy eating diet help you?

__________________________________________________________________

2.What can you also enjoy when you have a healthy eating diet?

__________________________________________________________________

3.Why are dairy products good for your health?

__________________________________________________________________

4.What is the function of meat,fish,eggs,beans and nuts?

__________________________________________________________________

5.Why are whole grains an important part of every meal?

__________________________________________________________________

6.What types of foods can we get whole grains from?

__________________________________________________________________

7.Why are fruit and vegetables the most important part of a healthy diet?

__________________________________________________________________

8.What typesof fruit and vegetables have more vitamins?

__________________________________________________________________

0
Question 1: Supply the correct forms of the verbs in brackets.1. It is crucial that Dido (stop) using Quang Ha.2. I will ring the bell one more. if he (not answer),I think he must(go) out3. I am sorry about the noise last night. We (have) a party.4. The man who (rescue) had been in the sea for ten hours.5. A great deal of time (be) spent for his exercise.6. We want (pay) better wages.7. People always (blame) their circumstances for what they are.8. You (stop) by a policeman if you (try) to...
Đọc tiếp

Question 1: Supply the correct forms of the verbs in brackets.

1. It is crucial that Dido (stop) using Quang Ha.

2. I will ring the bell one more. if he (not answer),I think he must(go) out

3. I am sorry about the noise last night. We (have) a party.

4. The man who (rescue) had been in the sea for ten hours.

5. A great deal of time (be) spent for his exercise.

6. We want (pay) better wages.

7. People always (blame) their circumstances for what they are.

8. You (stop) by a policeman if you (try) to cross the road now.

Question 2: Use the correct form of the words in brackets to complete the following passage.

The families in our streets are slowly being driven mad by the .............. (1- refuse) of the inhabitants of No.13 to have any form of ............ (2-communiate) with them. The trouble started over what is known as noise .............. (3 - pollute). Every evening, the ........... (4- think) neighbours used to turn up the volume on the TV so loud that no one in the (5 - neighbour) was able to hear anything else. Not knowing what ............ (6 - act) to take, local residents held a meeting to see if anyone had any ............ (7 - suggest) as to how to deal with the problem. A decision was made to send a number of people to talk to the family in No. 13 and ask them .......

............. (8- polite) to turn their music down after six in the evening. Unfortunately, the visit did not turn out to be ............ (9 - succeed), as the inhabitants of No.13 refused to talk to them. So on the .............. (10 - advise) of local police, the matter is now in the hands of the court.

Question 3: Fill in each numbered blank with a suitable word

When you hear the word "bank", what do you think of ? A ......... (1) to put money? The land on the edge of a river? To depend on something or someone ? If you choose any of .....

............ (2) things, you're right. Why ? because words often have ............. (3) than one meaning. The tricky part is figuring out ........... (4) meaning is appropriate.

Choosing the correct meaning of a word depends on ............. (5) things. First, it depends on the words and ............ (6) surrounding your particular word. The other words and sentences give you context clues. ................. (7), the meaning depends on how the word is ............ (8) in the sentence. Is it a noun, a verb, ................ (9) adjective or part of a phrase? Knowing the word's part of speech will .............. (10) you discover the word's precise meaning.

Question 4: Read the text then choose the correct answer

Computing is now at the same stage as printing was when the first printing presses were used. Before printing presses were invented, only rich people like kings and dukes could afford to buy books. Often these people were unable to read and hadn't enough time to learn. In any case, the books were so big that it was difficult for anyone to relax with a book as we do today. They wanted books because they were expensive and there was something magical about them. Only a few people were able to write, and it took an extremely long time to write a book. Monks and other people who could write said ordinary people could not learn to read.

The position with computers in very similar today. A few years ago, computers were very large and expensive. Business managers and rich people ordered them but they didn’t know how to use them. In many countries, however, the situation has now completely changed. Lots of people not only own microcomputers but also know how to use them.

1. What happened before printing presses were invented ?

a. Books were so big that people didn’t want to buy them.

b. Only intelligent and rich people could read books.

c. Only kings and dukes had enough money to buy books.

d. All rich people bought books.

2. Why were books wanted before printing presses were invented ?

a. to show that the people who owned the books were rich and intelligent.

b. to show that the people who owned the books could write.

c. Because books were dear and magical.

d. Because books showed that the person who owned them were magical people.

3. What is the common feature of a book and a computer?

a. They were only for intelligent people.

b. They were too expensive to buy.

c. They were large and expensive at first.

d. Only people who could use them buy them.

4. What situation has throughly changed nowadays?

a. A lot of people are eager to buy computers

b. A lot of computers are sold

c. Even children can use a computer

d. A person who buys a computer knows how to use it.

Question 5: a/ Each line in the following passage has a spare word; Underline that word and write it in the blanks given.

BICYCLES

The bicycle is a cheap and clean way to for travel . The first 0/ .......for...........
bicycle was made in about one hundred and fifty years ago. At 1/ .......................
first, bicycles were much expensive. Only rich people could 2/ .......................
buy one. These early time bicycles looked very different from 3/ .......................
the ones we have them today. Later, when bicycles became 4/.......................
cheaper, many lot people bought one. People started riding 5/ .......................
bicycles to work and in their with free time. Today, people use 6/ .......................
cars more than bicycles; cars are much more faster and you 7/ .......................
don’t get wet when it start rains! But some people still prefer to 8/ .......................
cycle to work . They say that there have are too many cars in 9/ .......................
town centers and you can't able find anywhere to park! 10/ .....................

b/ Fill in the blanks with a suitable prepositions.

1. George fell .............the bladder while he was painting the ceiling.

2. We stopped everyone .................leaving the building.

3. Admision .................university depends .....................examination results.

4. Don`t use that dictionary. It is .............date. Find one that is ...................date.

Question 6: Do as directed

1. My friend had excellent ideas. He did a good job,too.

(join into one sentence, using not only.....but...as well)

2. His explanation is not clear. The examples he gives are not clear.

(join into one sentence, using : neither...............nor)

3. People say that the price of gold is going up. (change into passive voice.)

4. He asked me: "When will you give this book back to me?" (change into Reported speech)

5. Seldom did people travel far from home years ago. (Use the ordinary word order)

6. He was given a gift. So were you. (Join into one sentence, using "as well")

7. You may be intelligent, but you should be careful about this (start with "No matter........"

8. He made a great discovery. He was very proud of it. (Combine into one sentence)

9. Lan found it difficult to accept the situation. (rewrite with: difficulty)

10.The farmers had applied new technology in their fields. The output of rice was raised.

(Combine with: Thanks to ...........which............)

3
21 tháng 4 2020

hoi cham

21 tháng 4 2020

cac bn tra loi dc cau nao thi ghi cau day

Question 1: Supply the correct forms of the verbs in brackets.1. It is crucial that Dido (stop) using Quang Ha.2. I will ring the bell one more. if he (not answer),I think he must(go) out3. I am sorry about the noise last night. We (have) a party.4. The man who (rescue) had been in the sea for ten hours.5. A great deal of time (be) spent for his exercise.6. We want (pay) better wages.7. People always (blame) their circumstances for what they are.8. You (stop) by a policeman if you (try) to...
Đọc tiếp

Question 1: Supply the correct forms of the verbs in brackets.

1. It is crucial that Dido (stop) using Quang Ha.

2. I will ring the bell one more. if he (not answer),I think he must(go) out

3. I am sorry about the noise last night. We (have) a party.

4. The man who (rescue) had been in the sea for ten hours.

5. A great deal of time (be) spent for his exercise.

6. We want (pay) better wages.

7. People always (blame) their circumstances for what they are.

8. You (stop) by a policeman if you (try) to cross the road now.

Question 2: Use the correct form of the words in brackets to complete the following passage.

The families in our streets are slowly being driven mad by the .............. (1- refuse) of the inhabitants of No.13 to have any form of ............ (2-communiate) with them. The trouble started over what is known as noise .............. (3 - pollute). Every evening, the ........... (4- think) neighbours used to turn up the volume on the TV so loud that no one in the (5 - neighbour) was able to hear anything else. Not knowing what ............ (6 - act) to take, local residents held a meeting to see if anyone had any ............ (7 - suggest) as to how to deal with the problem. A decision was made to send a number of people to talk to the family in No. 13 and ask them .......

............. (8- polite) to turn their music down after six in the evening. Unfortunately, the visit did not turn out to be ............ (9 - succeed), as the inhabitants of No.13 refused to talk to them. So on the .............. (10 - advise) of local police, the matter is now in the hands of the court.

Question 3: Fill in each numbered blank with a suitable word

When you hear the word "bank", what do you think of ? A ......... (1) to put money? The land on the edge of a river? To depend on something or someone ? If you choose any of .....

............ (2) things, you're right. Why ? because words often have ............. (3) than one meaning. The tricky part is figuring out ........... (4) meaning is appropriate.

Choosing the correct meaning of a word depends on ............. (5) things. First, it depends on the words and ............ (6) surrounding your particular word. The other words and sentences give you context clues. ................. (7), the meaning depends on how the word is ............ (8) in the sentence. Is it a noun, a verb, ................ (9) adjective or part of a phrase? Knowing the word's part of speech will .............. (10) you discover the word's precise meaning.

Question 4: Read the text then choose the correct answer

Computing is now at the same stage as printing was when the first printing presses were used. Before printing presses were invented, only rich people like kings and dukes could afford to buy books. Often these people were unable to read and hadn't enough time to learn. In any case, the books were so big that it was difficult for anyone to relax with a book as we do today. They wanted books because they were expensive and there was something magical about them. Only a few people were able to write, and it took an extremely long time to write a book. Monks and other people who could write said ordinary people could not learn to read.

The position with computers in very similar today. A few years ago, computers were very large and expensive. Business managers and rich people ordered them but they didn’t know how to use them. In many countries, however, the situation has now completely changed. Lots of people not only own microcomputers but also know how to use them.

1. What happened before printing presses were invented ?

a. Books were so big that people didn’t want to buy them.

b. Only intelligent and rich people could read books.

c. Only kings and dukes had enough money to buy books.

d. All rich people bought books.

2. Why were books wanted before printing presses were invented ?

a. to show that the people who owned the books were rich and intelligent.

b. to show that the people who owned the books could write.

c. Because books were dear and magical.

d. Because books showed that the person who owned them were magical people.

3. What is the common feature of a book and a computer?

a. They were only for intelligent people.

b. They were too expensive to buy.

c. They were large and expensive at first.

d. Only people who could use them buy them.

4. What situation has throughly changed nowadays?

a. A lot of people are eager to buy computers

b. A lot of computers are sold

c. Even children can use a computer

d. A person who buys a computer knows how to use it.

Question 5: a/ Each line in the following passage has a spare word; Underline that word and write it in the blanks given.

BICYCLES

The bicycle is a cheap and clean way to for travel . The first 0/ .......for...........
bicycle was made in about one hundred and fifty years ago. At 1/ .......................
first, bicycles were much expensive. Only rich people could 2/ .......................
buy one. These early time bicycles looked very different from 3/ .......................
the ones we have them today. Later, when bicycles became 4/.......................
cheaper, many lot people bought one. People started riding 5/ .......................
bicycles to work and in their with free time. Today, people use 6/ .......................
cars more than bicycles; cars are much more faster and you 7/ .......................
don’t get wet when it start rains! But some people still prefer to 8/ .......................
cycle to work . They say that there have are too many cars in 9/ .......................
town centers and you can't able find anywhere to park! 10/ .....................

b/ Fill in the blanks with a suitable prepositions.

1. George fell .............the bladder while he was painting the ceiling.

2. We stopped everyone .................leaving the building.

3. Admision .................university depends .....................examination results.

4. Don`t use that dictionary. It is .............date. Find one that is ...................date.

Question 6: Do as directed

1. My friend had excellent ideas. He did a good job,too.

(join into one sentence, using not only.....but...as well)

2. His explanation is not clear. The examples he gives are not clear.

(join into one sentence, using : neither...............nor)

3. People say that the price of gold is going up. (change into passive voice.)

4. He asked me: "When will you give this book back to me?" (change into Reported speech)

5. Seldom did people travel far from home years ago. (Use the ordinary word order)

6. He was given a gift. So were you. (Join into one sentence, using "as well")

7. You may be intelligent, but you should be careful about this (start with "No matter........"

8. He made a great discovery. He was very proud of it. (Combine into one sentence)

9. Lan found it difficult to accept the situation. (rewrite with: difficulty)

10.The farmers had applied new technology in their fields. The output of rice was raised.

(Combine with: Thanks to ...........which............)

1
21 tháng 2 2024

Question 1: Supply the correct forms of the verbs in brackets.
1. It is crucial that Dido stops using Quang Ha
2. I will ring the bell one more time. If he doesn't answer, I think he must have gone out
3. I am sorry about the noise last night. We were having a party
4. The man who was rescued had been in the sea for ten hours
5. A great deal of time is being spent on his exercis
6. We want to be paid better wages
7. People always blame their circumstances for what they are
8. You will be stopped by a policeman if you try to cross the road now

Question 2: Use the correct form of the words in brackets to complete the following passage.
1. refusal    2. communication    3. pollution    4. thoughtless    5. neighborhood 
6. action       7. suggestions       8. politely      9. successful    10. advice 

Question 3: Fill in each numbered blank with a suitable word
1. place         2. these         3. more       4. which     5. several 
6. phrases     7. Second      8. used       9. an          10. help 

Question 4: Read the text then choose the correct answer
1B     2C     3C      4D

Question 5: a/ Each line in the following passage has a spare word; Underline that word and write it in the blanks given.
0. for       1. for         2. much      3. time      4. today    5. lot
6. with     7. more     8. it            9. have      10. able
b/ Fill in the blanks with a suitable prepositions
1. George fell off the ladder while he was painting the ceiling
2. We stopped everyone from leaving the building
3. Admission to university depends on examination results
4. Don't use that dictionary. It is out of date. Find one that is up to date

Question 6: Do as directed
1. Not only did my friend have excellent ideas, but he did a good job as well
2. Neither his explanation nor the examples he gives are clear
3. It is said that the price of gold is going up
4. He asked me when I would give that book back to him
5. Seldom years ago did people travel far from home
6. He was given a gift, and you were as well
7. No matter how intelligent you may be, you should be careful about this
8. He made a great discovery and was very proud of it
9. Lan found difficulty in accepting the situation
10. Thanks to the new technology applied in their fields, the farmers raised the output of rice

18 tháng 2 2020

I - Underline the correct verb in each sentence.

1. (Stir/ Drain/ Chop) the carrot into small circles.

2. (Mix/ Boil/ Bake) the lasagne for 30 minutes in the oven.

3. After ten minutes, (drain/ boil/ fry) the spaghetti until there is no water left. Then place the pasta into a large bowl.

4. (Peel/ Stir/ Fry) the onion and throw away the skin.

5. (Drain/ Marinate/ Chop) the steak with salt, pepper and lemon.

6. (Simmer/ Fry/ Bake) the onion until it is soft, but not brown.

7. Constantly (fry/ stir/ boil) the mixture using a wooden spoon.

8. When the mixture looks shiny, (fry/ pour/ chop) it into individual dishes.

9. When you have finished preparing the vegetables, (stir/ mix/ chop) them together with your hands.

10.(Fry/ Bake/ Boil) the spaghetti for ten minutes, or until soft.

GIÚP EM DỊCH BÀI NÀY!!Every country has their traditional clothes. Ao Dai is known as traditional Vietnamese clothes especially women. According to dictionary the definition of Ao Dai is a long-sleeved tunic with ankle-length panels at front and back, worn over trousers. It can be designed with several colors, patterns such as: flower, nature and different kind of fabrics. Wearing Ao Dai, women dignify their body’s attraction as well as reflect a national culture. It has a progress of...
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GIÚP EM DỊCH BÀI NÀY!!

Every country has their traditional clothes. Ao Dai is known as traditional Vietnamese clothes especially women. According to dictionary the definition of Ao Dai is a long-sleeved tunic with ankle-length panels at front and back, worn over trousers. It can be designed with several colors, patterns such as: flower, nature and different kind of fabrics. Wearing Ao Dai, women dignify their body’s attraction as well as reflect a national culture. It has a progress of developing from short simple pattern to more sophisticate style. Ao Dai symbolizes many personalities of Vietnamese women: gentleness, diligence, kindness and bravery. Therefore, it’s very proud for women to put on the special clothes. Student and teacher wears white Ao Dai to high school and some university on Monday to join in the ceremony. Moreover, it is engagement party that the bloom dress in Ao Dai to represent the tradition of Vietnam. Not only in Vietnam, It is also famous in international market that an increasing number of foreign tourists try wearing Ao Dai when visiting my country. They have good comment and congratulation on it. Protecting and preserving the beauty and nature of it are not only the individual’s duty but also all of citizen. Besides, Ao Dai is a beneficial and comfortable costume that women can choose it for any event and party. Although there is a large number of new trend of fashion, Ao Dai always plays an important role in spiritual life of Vietnamese.

1
24 tháng 11 2019

Mỗi quốc gia có quần áo truyền thống của họ. Áo dài được biết đến là trang phục truyền thống của Việt Nam đặc biệt là phụ nữ. Theo từ điển, định nghĩa của Áo dài là một chiếc áo dài tay với các tấm dài đến mắt cá chân ở phía trước và sau, mặc trên quần. Nó có thể được thiết kế với một số màu sắc, hoa văn như: hoa, thiên nhiên và các loại vải khác nhau. Mặc áo dài, phụ nữ trang nghiêm thu hút cơ thể của họ cũng như phản ánh một nền văn hóa dân tộc. Nó có một tiến trình phát triển từ mô hình đơn giản ngắn đến phong cách tinh tế hơn. Áo dài tượng trưng cho nhiều tính cách của phụ nữ Việt Nam: dịu dàng, siêng năng, tốt bụng và bản lĩnh. Vì vậy, nó rất tự hào cho phụ nữ mặc quần áo đặc biệt. Học sinh và giáo viên mặc áo dài trắng đến trường trung học và một số trường đại học vào thứ hai để tham gia buổi lễ. Hơn nữa, đó là bữa tiệc đính hôn mà chiếc váy nở trong Áo dài đại diện cho truyền thống của Việt Nam. Không chỉ ở Việt Nam, nó còn nổi tiếng trên thị trường quốc tế khi ngày càng có nhiều khách du lịch nước ngoài thử mặc áo dài khi đến thăm đất nước tôi. Họ có bình luận tốt và chúc mừng về nó. Bảo vệ và giữ gìn vẻ đẹp và bản chất của nó không chỉ là nhiệm vụ cá nhân mà còn của tất cả mọi người dân. Bên cạnh đó, Áo dài là một trang phục có lợi và thoải mái mà phụ nữ có thể chọn nó cho bất kỳ sự kiện và bữa tiệc nào. Mặc dù có một số lượng lớn xu hướng mới của thời trang, áo dài luôn đóng một vai trò quan trọng trong đời sống tinh thần của người Việt.

.............................................Chúc you học tốt.........................................................

By: Uyển Đình.

Chinese fried rice contains a different mix of the typical ingredients, including shrimp, chicken seasoning powder, cubed pork, eggs, mixed vegetables, and of course, rice. Chinese fried rice is solid standard fare, perfect for a cup of iced tea and conversation with friends. Chinese fried rice is not a particularly difficult dish to make. First, wash and cook the rice, setting it aside to cool completely. Boil the diced(đượctháihạtlựu) carrots in boiling water for two minutes,...
Đọc tiếp

Chinese fried rice contains a different mix of the typical ingredients, including shrimp, chicken seasoning powder, cubed pork, eggs, mixed vegetables, and of course, rice. Chinese fried rice is solid standard fare, perfect for a cup of iced tea and conversation with friends.

Chinese fried rice is not a particularly difficult dish to make. First, wash and cook the rice, setting it aside to cool completely. Boil the diced(đượctháihạtlựu) carrots in boiling water for two minutes, draining well. Boil the shrimp in boiling water, draining well, peeling and dicing.

Next, heat a half-tablespoon of cooking oil in frying pan over medium heat. Add the eggs, stirring quickly until cooked, then set aside.

Reheat the pan and add the remaining oil. Sauté the garlic and shallots until fragrant and slightly brown. Add in the shrimp, sausages and carrots. Stir-fry for five minutes, and then add the rice, mixing well. Season with salt, sugar, chicken seasoning powder and pepper. Mix in the eggs and continue to fry for another five minutes or until the rice is dry. Mix well for another few minutes until the ingredients are well combined. Sprinkle the spring onions, garnish with coriander and serve with fish sauce and sliced chili.

ANSWER THE QUESTIONS:

1/ What are the ingredients of Chinese fried rice?

.................................................................................................................

2/ What drink might make Chinese fried rice more delicious?

.................................................................................................................

3/ What kind of rice do we need to make the dish?

.................................................................................................................

4/ What should we do with carrots?

.................................................................................................................

5/ What should we do with shrimps?

.................................................................................................................

6/ How long should it be stir-fried?

.................................................................................................................

7/ What ingredients do we use to flavour it with?

.................................................................................................................

8/ What should it be served with?

……………………………………………………………………………..

1
6 tháng 5 2020

Chinese fried rice contains a different mix of the typical ingredients, including shrimp, chicken seasoning powder, cubed pork, eggs, mixed vegetables, and of course, rice. Chinese fried rice is solid standard fare, perfect for a cup of iced tea and conversation with friends.

Chinese fried rice is not a particularly difficult dish to make. First, wash and cook the rice, setting it aside to cool completely. Boil the diced(đượctháihạtlựu) carrots in boiling water for two minutes, draining well. Boil the shrimp in boiling water, draining well, peeling and dicing.

Next, heat a half-tablespoon of cooking oil in frying pan over medium heat. Add the eggs, stirring quickly until cooked, then set aside.

Reheat the pan and add the remaining oil. Sauté the garlic and shallots until fragrant and slightly brown. Add in the shrimp, sausages and carrots. Stir-fry for five minutes, and then add the rice, mixing well. Season with salt, sugar, chicken seasoning powder and pepper. Mix in the eggs and continue to fry for another five minutes or until the rice is dry. Mix well for another few minutes until the ingredients are well combined. Sprinkle the spring onions, garnish with coriander and serve with fish sauce and sliced chili.

ANSWER THE QUESTIONS:

1/ What are the ingredients of Chinese fried rice?

=> The ingredients of Chinese fried rice are shrimp, chicken seasoning powder, cubed pork, eggs, mixed vegetables, and rice.

2/ What drink might make Chinese fried rice more delicious?

=> A cup of iced tea

3/ What kind of rice do we need to make the dish?

=> câu này mk chưa tìm thấy bucminh

4/ What should we do with carrots?

=> We should boil the diced carrots in boiling water for two minutes, draining well.

5/ What should we do with shrimps?

=> Boil the shrimp in boiling water, draining well, peeling and dicing.

6/ How long should it be stir-fried?

=> For five minutes.

7/ What ingredients do we use to flavour it with?

=> Salt, sugar, chicken seasoning powder and pepper.

8/ What should it be served with?

=> Fish sauce and sliced chili.

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 44.Bird migration is one of the most interesting yet least understood natural phenomena. Every fall birds from northern latitudes fly in groups to the warmer southern latitudes and then return north in the spring. Scientists agree on the main reasons for migration: to follow the food supply and to avoid harsh climate conditions. For example,...
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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 44.

Bird migration is one of the most interesting yet least understood natural phenomena. Every fall birds from northern latitudes fly in groups to the warmer southern latitudes and then return north in the spring. Scientists agree on the main reasons for migration: to follow the food supply and to avoid harsh climate conditions. For example, insects disappear during the cold months, prompting insect-dependent birds to fly south to warm areas where insects breed. No similar consensus has emerged, however, about how birds are able to navigate. Despite many recent experiments, bird experts still do not know how birds arrive at the same destinations every year and then find their way back home in the spring.

Some have suggested that birds find their way by following landmarks, such as rivers and mountain ranges. Experiments have confirmed that some species do follow such topographic features. But that method cannot explain how some birds travel at night. Other studies show that some nocturnal birds navigate by the stars. But that explanation cannot explain daytime migration or travel when the skies are cloudy.

The most popular explanation currently is that birds are guided by Earth's magnetic poles. The mechanism by which that works has not yet been proved. One theory points to the fact that some birds' contain magnetite, a naturally occurring magnetic compound consisting of iron oxide. Magnetite has been found in many animals, including birds. With magnets embedded in their brains, birds would be able to sense the magnetic fields of the North and South Poles.

A recent experiment with homing pigeons provided some evidence that magnetite does play a crucial role in migration. Homing pigeons are known to have the ability to return to their homes after being taken hundreds of miles away. Researchers found that they could train homing pigeons to recognize changes in a magnetic field. When a surrounding magnetic field was normal, the birds would gather at one end of a cage. But when the field's polarity was altered, they hopped to the other end, suggesting that they were directing and responding to changes in the magnetic field.

Another theory has been offered to explain this sensitivity to magnetic poles, a theory that draws upon quantum mechanics, which is the study of how particles move inside an atom. It relies on the fact that electrons come in pairs that orbits the nucleus of an atom. The two electrons spin in opposite directions, creating two magnets that neutralize each other. But when molecules split and react with other molecules to form compounds, the electrons pairs may no longer spin in opposite directions. Instead, they may repel each other, as when two north ends of magnets are pressed together. The electrons struggle to change direction in order to achieve a stable state in which the two electrons again neutralize each other, giving off no magnetic field.

Question 35: The word "phenomena" in the passage is closest in meaning to

A. events          B. trends         C. discoveries         D. theories

Question 36: According to paragraph 1, insects influence bird migration in which of the following ways?

A. insects generate a magnetic field that birds can detect

B. Insects provide a food supply that exists only in warm climates

C. Birds follow the paths taken by flying insects

D. birds know when to migrate by a sudden increase in insect population

Question 37: The word "some" in the passage refers to

A. insects         B. recent experiments  C. bird experts       D. birds

Question 38: According to paragraph 3, birds can detect the magnetic fields of the North and South poles because

A. they sense the motion of electron pairs

B. they can locate the poles by following landmarks

C. they ingest metal particles that are attracted by the poles

D. they have magnetite in their brains

Question 39: The word "embedded" in the passage is closest in meaning to

A. implanted        B. attached         C. attracted        D. activated

Question 40: The author discusses "homing pigeons" in paragraph 4 in order to

A. provide an example of how humans can train birds

B. describe an experiment showing the importance of magnetite

C. show that homing pigeons return home by following landmarks

D. report homing pigeons' behavior inside a cage

Question 41: According to the passage, all of the following are theories about how birds navigate EXCEPT:

A. They follow landmarks like rivers and mountains

B. They are guided by their position relative to the stars

C. They feel vibrations in nerve endings in their brains

D. They respond to changes in light

Question 42: According to paragraph 4, the pigeons moved to the opposite end of a cage because

A. The magnetic field was normal

B. The magnetic field was stronger at one end

C. The magnetic field changed its polarity

D. The magnetic field was removed

Question 43: The word "altered" in the passage is closest in meaning to

A. reversed        B. cancelled        C. strengthened         D. detected

Question 44: Which of the following can be inferred about an electron pair in two north ends of magnets?

A. The two electrons spin in opposite directions

B. One electron will move to the south end

C. One electron will be captured by the nucleus

D. The two electrons spin in the same direction

1
24 tháng 7 2019

1B

2B

3C

4C

5A

6D

7B

8A

9C

10D

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