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B. USING THE PRESENT CONTINUOUS REWRITE THE FOLLOWING SENTENCE WITH THE FORM OF PASSIVE 1. I am cleaning my room -> my mom 2. they are rebuilding the damaged museum -> the damaged museum 3. my mother is not preparing the dinner in the kitchen -> the dinner 4. mary is performing magic tricks at Tom's party -> magic tricks 5. she is decorating her house with many flowers -> her house 6. i'm reading a famous novel named Gone with the wind -> a famous novel 7. are they washing his car at the...
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B. USING THE PRESENT CONTINUOUS REWRITE THE FOLLOWING SENTENCE WITH THE FORM OF PASSIVE
1. I am cleaning my room
-> my mom
2. they are rebuilding the damaged museum
-> the damaged museum
3. my mother is not preparing the dinner in the kitchen
-> the dinner
4. mary is performing magic tricks at Tom's party
-> magic tricks
5. she is decorating her house with many flowers
-> her house
6. i'm reading a famous novel named Gone with the wind
-> a famous novel
7. are they washing his car at the garage
-> his car
8. the chairman of the comapny is presenting the annual report in the meeting room
-> the annual report
9. the zoo keeper is not feeding those dangerous tigers
-> those dangerous tigers
10. is he watering the trees in the garden
-> the trees

c. Using the present perfect tense REWRITE THE FOLLOWING SENTENCE WITH THE FORM OF PASSIVE
1. no one has used this washing machine for ages
-> this washing machine
2. he has opened his own restaurant in distric 1
-> his own restaurant
3. she has cut her hair
-> her hair
4. my sister has sliced the beef and put it into refrigerator
-> the beef
5. ourr company has displayed the new car model
- the new car model
6. they have sent some elephants to the zoo
-> some elephants
7. people have said that he has moved his house to Italy
-> he
8. have you ever told Alan's story to her mother
-> alan's story
9/ i haven't eaten snails before
->snails
10. they've invited Mr. Brown to speak at the conference
- Mr. brown

E. USING THE PAST CONTINOUS REWRITE THE FOLLOWING SENTENCE WITH THE FORM OF PASSIVE
1. Julie was making pancakes in the kitchen
-> Pancakes
2. i was helping my little brother with his homework
-> my little brother
3. my mother was growing some flowers in the garden
-> some flowers
4. what was he writing on the desk
-> what was
5. the boy was throwing the snowball
-> the snowball
6. nobody was watching tv when we arrived
-> tv
7. why were you picking the leaves
->why
8. was she reading the magazine when the phone rang
-> the magazine
9. mrs. smith was expecting her son to come back
-> mrs. smith's son
10. we weren't painting the gate
-> the gate

F. using the past perfect REWRITE THE FOLLOWING SENTENCE WITH THE FORM OF PASSIVE
1. i had lost the key
- the key
2. the little girl had broken the Chinese pot
-> the Chinese pot
3/ the americans had discovered another planet
-> another planet
4. firefighters had put out the fire successfully
-> the fire
5. the manager hadn't accepted my resighnation letter
-> my resignation letter
6. had peter found the solutions to these problems
-> the solution
7.he had given an interesting book to me
-> an interesting book
8. when i got home, i realized that someone had stolen my car
-> when i got home, i realized that my car
9. they hadd raised many pigs and chickens on theirs farm
- many pigs and chickens
10. the scientists had placed the chemical in the test tube
-> the chemical

2
4 tháng 2 2018

-Nhiều quá à...Làm giúp bạn một vài phần thôi,còn lại xem lại công thức nhé....

B. USING THE PRESENT CONTINUOUS REWRITE THE FOLLOWING SENTENCE WITH THE FORM OF PASSIVE
1. I am cleaning my room
-> my room is being cleaned .
2. they are rebuilding the damaged museum
-> the damaged museum is being rebuilt.
3. my mother is not preparing the dinner in the kitchen
-> the dinner isn't being prepared in the kitchen by my mother.
4. mary is performing magic tricks at Tom's party
-> magic tricks are being performed at Tom's party by mary.
5. she is decorating her house with many flowers
-> her house is being decorated with many flowers
6. i'm reading a famous novel named Gone with the wind
-> a famous novel is being read named Gone with the wind
7. are they washing his car at the garage?
->Is his car being washed at the garage?
8. the chairman of the comapny is presenting the annual report in the meeting room
-> the annual report is being presented in the meeting room by the chairman of the company
9. the zoo keeper is not feeding those dangerous tigers
-> those dangerous tigers aren't being fed by the zoo keeper.
10. is he watering the trees in the garden?
-> Are the trees being watered?

Phần còn lại nhìn công thức nha bạn.

4 tháng 2 2018

B. USING THE PRESENT CONTINUOUS REWRITE THE FOLLOWING SENTENCE WITH THE FORM OF PASSIVE
1. I am cleaning my room
-> my mom is being cleaned
2. they are rebuilding the damaged museum
-> the damaged museum is being rebuilt.
3. my mother is not preparing the dinner in the kitchen
-> the dinner is not being prepared in the kitchen by my mother.
4. mary is performing magic tricks at Tom's party
-> magic tricks are being performed at Tom's party by Mary.
5. she is decorating her house with many flowers
-> her house is being decorated with many flowers
6. i'm reading a famous novel named Gone with the wind
-> a famous novel named Gone with the wind is being read.
7. are they washing his car at the garage
-> his car is being washed at the garage.
8. the chairman of the comapny is presenting the annual report in the meeting room
-> the annual report is being presented in the meeting room by the chairman of the company.
9. the zoo keeper is not feeding those dangerous tigers
-> those dangerous tigers are not being fed by the zoo keeper.
10. is he watering the trees in the garden
-> the trees are being watered in the garden.

c. Using the present perfect tense REWRITE THE FOLLOWING SENTENCE WITH THE FORM OF PASSIVE
1. no one has used this washing machine for ages
-> this washing machine hasn't been used for ages
2. he has opened his own restaurant in distric 1
-> his own restaurant in district has been opened.
3. she has cut her hair
-> her hair has been cut.
4. my sister has sliced the beef and put it into refrigerator
-> the beef has been sliced and put into refrigerator by my sister.
5. ourr company has displayed the new car model
- the new car model has been displayed by our company.
6. they have sent some elephants to the zoo
-> some elephants have been sent to the zoo
7. people have said that he has moved his house to Italy
-> he has been said to have moved his house to Italy.
8. have you ever told Alan's story to her mother
-> has alan's story been told to her mother?
9/ i haven't eaten snails before
->snails haven't been eaten before.
10. they've invited Mr. Brown to speak at the conference
- Mr. brown has been invited to speak at the conference.

E. USING THE PAST CONTINOUS REWRITE THE FOLLOWING SENTENCE WITH THE FORM OF PASSIVE
1. Julie was making pancakes in the kitchen
-> Pancakes were being made in the kitchen by Julie.
2. i was helping my little brother with his homework
-> my little brother was being helped with his homework
3. my mother was growing some flowers in the garden
-> some flowers were being grown in the garden by my mother.
4. what was he writing on the desk
-> what was being written on the desk?
5. the boy was throwing the snowball
-> the snowball was being thrown by the boy.
6. nobody was watching tv when we arrived
-> tv wasn't being watched when we arrived
7. why were you picking the leaves
->why were the leaves being picked ?
8. was she reading the magazine when the phone rang
-> Was the magazine being read when the phone rang?
9. mrs. smith was expecting her son to come back
-> mrs. smith's son was being expected to come back.
10. we weren't painting the gate
-> the gate wasn't being painted

F. using the past perfect REWRITE THE FOLLOWING SENTENCE WITH THE FORM OF PASSIVE
1. i had lost the key
- the key had been lost.
2. the little girl had broken the Chinese pot
-> the Chinese pot had been broken by the little girl.
3/ the americans had discovered another planet
-> another planet had been discovered by the Americans.
4. firefighters had put out the fire successfully
-> the fire had been put out successfully by firefighters.
5. the manager hadn't accepted my resighnation letter
-> my resignation letter hadn't been accepted by the manger.
6. had peter found the solutions to these problems
-> Had the solutions to these problems been found by Peter?
7.he had given an interesting book to me
-> an interesting book had been given to me
8. when i got home, i realized that someone had stolen my car
-> when i got home, i realized that my car had been stolen
9. they hadd raised many pigs and chickens on theirs farm
- many pigs and chickens on their farm had been raised
10. the scientists had placed the chemical in the test tube
-> the chemical in the test tube had been placed by the scientists.

Read the following passage and put a word in the box in each of the numbered blanks:Up     Recycling             from            take             and(1) ___________ is using rubbish to remake new goods that can be sold again. For example, when you put bottles and cans in the recycling bin, people (2) ___________ them to a factory. In this factory, people reprocess these bottles (3) ___________cans into many new things.Recycling starts when you or your parents drop recyclable materials, such as...
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Read the following passage and put a word in the box in each of the numbered blanks:

Up     Recycling             from            take             and

(1) ___________ is using rubbish to remake new goods that can be sold again. For example, when you put bottles and cans in the recycling bin, people (2) ___________ them to a factory. In this factory, people reprocess these bottles (3) ___________cans into many new things.

Recycling starts when you or your parents drop recyclable materials, such as bottles and cans in the recycling bin. Next, collectors come to pick (4)___________ the materials and take them to a processing factory where they are sorted and processed into raw materials. After that, factories sell these materials to manufacturers who make the things you buy. These manufacturers make new items from them. Finally, you or your parents buy items made (5) ___________ recycled materials.

4
28 tháng 4 2022

1 recycling

2 take

3 and

4 up

5 from

28 tháng 4 2022

Up     Recycling             from            take             and

(1) ______Recycling_____ is using rubbish to remake new goods that can be sold again. For example, when you put bottles and cans in the recycling bin, people (2) _____take______ them to a factory. In this factory, people reprocess these bottles (3) ______and_____cans into many new things.

Recycling starts when you or your parents drop recyclable materials, such as bottles and cans in the recycling bin. Next, collectors come to pick (4)_____up______ the materials and take them to a processing factory where they are sorted and processed into raw materials. After that, factories sell these materials to manufacturers who make the things you buy. These manufacturers make new items from them. Finally, you or your parents buy items made (5) _____from______ recycled materials.

11 tháng 4 2023

1 recycling

2 take

3 and

4 up

5 from

11 tháng 4 2023

vãi 

hack à

nhanh vãi=)))

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 s. There has been much debate over the past few decades concerning fears that automation will lead to robots replacing human workers on a massive scale. The increasing use of robotics, computers and artificial intelligence is a reality, but its full implications are far from cut and dried. Some forecasts present the future in a utopian way, claiming that...
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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 Question s.

 There has been much debate over the past few decades concerning fears that automation will lead to robots replacing human workers on a massive scale.

 The increasing use of robotics, computers and artificial intelligence is a reality, but its full implications are far from cut and dried. Some forecasts present the future in a utopian way, claiming that robots will take over the tedious heavy work thus freeing up human time and potential, allowing for more creativity and innovation. At the other end of spectrum are those who foresee an employment apocalypse, predicting that almost fifty percent of all American jobs could vanish within the next few decades. Former Microsoft chairman Bill Gates states that in 20 years robots could be in place in a number of job categories, particularly those at lower end of the scale in terms of skills.

 The bottom line is that while the future is always uncertain, robots are a fixture of our society, which is not going to disappear. As with the Industrial Revolution, where machines were utilized in many tasks in place of manual laborers and social upheaval followed, the Digital Revolution is likely to place robots in various jobs. In spite of that, many of today’s jobs were not in existence before the Industrial Revolution, such as those of programmers, engineers and data scientists. This leads other experts to criticize this alarmist approach of robot scare-mongering, which is invariably compared to the 19th-century “Luddites”. This group was textile workers who feared being displaced by machines and resorted to violence, burning down factories and destroying industrial equipment – their rejection of inevitable progress has come to symbolize mindless ignorance.

 Needless to say, exactly what new kinds of jobs might exist in the future is difficult to envision at present. Therefore, the crux of the issue is not whether jobs will be lost, but whether the creation of new vacancies will outpace the ever-increasing number of losses and what skills will be required in the future.

 It is clearly not all doom and gloom, as demand for employees with skills in data analysis, coding, computer science, artificial intelligence and human-machine interface is rising and will continue to do so. Furthermore, the demand for skills in jobs where humans surpass computers, such as those involving care, creativity and innovative craftmanship, are likely to increase considerably. Ultimately, the key lies in the adaptation of the workforces, through appropriate education and training, to keep pace with our world’s technological progress.

Why is the example of the Industrial Revolution given?

A. It was also a time of great change in the workplace.

B. It had far less of an effect than the Digital Revolution.

C. It lead to widespread unemployment in the world.

D. It resulted in a more violent society.

1
15 tháng 5 2018

A

Kiến thức: đọc hiểu

Tạm dịch: Tại sao ví dụ về Cách mạng công nghiệp lại được nêu ra?

A. Đó cũng là thời gian có thay đổi lớn ở nơi làm việc.

B. Nó có ít hiệu quả hơn Cuộc Cách mạng Kỹ thuật số.

C. Nó dẫn đến tình trạng thất nghiệp phổ biến trên thế giới.

D. Nó dẫn đến một xã hội bạo lực hơn.

Thông tin: As with the Industrial Revolution, where machines were utilized in many tasks in place of manual laborers and social upheaval followed, the Digital Revolution is likely to place robots in various jobs.

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 35 to 42.   There has been much debate over the past few decades concerning fears that automation will lead to robots replacing human workers on a massive scale.   The increasing use of robotics, computers and artificial intelligence is a reality, but its full implications are far from cut and dried. Some forecasts present the future in a utopian way,...
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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 42.

  There has been much debate over the past few decades concerning fears that automation will lead to robots replacing human workers on a massive scale.

  The increasing use of robotics, computers and artificial intelligence is a reality, but its full implications are far from cut and dried. Some forecasts present the future in a utopian way, claiming that robots will take over the tedious heavy work thus freeing up human time and potential, allowing for more creativity and innovation. At the other end of spectrum are those who foresee an employment apocalypse, predicting that almost fifty percent of all American jobs could vanish within the next few decades. Former Microsoft chairman Bill Gates states that in 20 years robots could be in place in a number of job categories, particularly those at lower end of the scale in terms of skills.

  The bottom line is that while the future is always uncertain, robots are a fixture of our society, which is not going to disappear. As with the Industrial Revolution, where machines were utilized in many tasks in place of manual laborers and social upheaval followed, the Digital Revolution is likely to place robots in various jobs. In spite of that, many of today’s jobs were not in existence before the Industrial Revolution, such as those of programmers, engineers and data scientists. This leads other experts to criticize this alarmist approach of robot scare-mongering, which is invariably compared to the 19th-century “Luddites”. This group was textile workers who feared being displaced by machines and resorted to violence, burning down factories and destroying industrial equipment – their rejection of inevitable progress has come to symbolize mindless ignorance.

   Needless to say, exactly what new kinds of jobs might exist in the future is difficult to envision at present. Therefore, the crux of the issue is not whether jobs will be lost, but whether the creation of new vacancies will outpace the ever-increasing number of losses and what skills will be required in the future.

  It is clearly not all doom and gloom, as demand for employees with skills in data analysis, coding, computer science, artificial intelligence and human-machine interface is rising and will continue to do so. Furthermore, the demand for skills in jobs where humans surpass computers, such as those involving care, creativity and innovative craftmanship, are likely to increase considerably. Ultimately, the key lies in the adaptation of the workforces, through appropriate education and training, to keep pace with our world’s technological progress.

Why is the example of the Industrial Revolution given?

A. It was also a time of great change in the workplace. 

B. It had far less of an effect than the Digital Revolution. 

C. It lead to widespread unemployment in the world. 

D. It resulted in a more violent society.

1
11 tháng 7 2018

Đáp án A

Tạm dịch: Tại sao ví dụ về Cách mạng công nghiệp lại được nêu ra?

A. Đó cũng là thời gian có thay đổi lớn ở nơi làm việc.

B. Nó có ít hiệu quả hơn Cuộc Cách mạng Kỹ thuật số.

C. Nó dẫn đến tình trạng thất nghiệp phổ biến trên thế giới.

D. Nó dẫn đến một xã hội bạo lực hơn.

Thông tin: As with the Industrial Revolution, where machines were utilized in many tasks in place of manual laborers and social upheaval followed, the Digital Revolution is likely to place robots in various jobs.

22 tháng 7 2018

1) " what does your father do ? "He is an architect but he isn't working at the moment

2) I usually enjoy .parties but I don't enjoy .this one very much

3)The train is never late.It always leaves on time

4) Jim is very untidy.He always leaves his things all over the place

22 tháng 7 2018

put the verbs in correct forms: present continous or present simple

1) " what ( your father/do).....does your father do...................? "He is an architect but he (not/work).....isn't working ..............at the moment

2) I(usually/enjoy)....usually enjoy .........parties but I (not/enjoy)....don't enjoy ....................this one very much

3)The train is never late.It (always/leave)...always leaves ...................... on time

4) Jim is very untidy.He( always/leave)....is always leaving ......................... his things all over the place

9 tháng 1 2019

Put the verbs in brackets into the simple present or present continuous tense

1. Why does Mrs. Pitt (look)look so angry?

Mr. Pitt (smoke) smokes a cigarette and (drop)drops the ash on the carpet

2. This is our itinerary. We (leave)leave home on the 8th, (arrive )arrive in Paris on the 9th, (spend)spend the day in Paris, and (set)set out that night for Venice

That (sound)sounds most interesting. You must tell me all about it when you ( get)get back

3. This story is about a boy who(make)makes friends with a snake which me (find)find in his garden . Then he (go)goes away but he ( not forget)doesn't forget the snake and some years later he (return)returns and (look)looks for it.

9 tháng 1 2019

1. look - smokes - drops

2. leave - arrive - spend

3. makes - find - doesn't forget - returns - looks

I.                 Change these sentences into passive voice (Simple Present): 1.      Mr. Long teaches me new things. -         ……………………………………………… 2.      He irons his shirt in the morning. -         ………………………………………………………………………………………… 3.      They drink  beer in the evening. -         ………………………………………………………………………………………… 4.      She puts a blue pen on the table. -         ………………………………………………………………………………………… 5.      My mother teaches me English on Saturday evenings. -        ...
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I.                 Change these sentences into passive voice (Simple Present):

1.      Mr. Long teaches me new things.

-         ………………………………………………

2.      He irons his shirt in the morning.

-         …………………………………………………………………………………………

3.      They drink  beer in the evening.

-         …………………………………………………………………………………………

4.      She puts a blue pen on the table.

-         …………………………………………………………………………………………

5.      My mother teaches me English on Saturday evenings.

-         …………………………………………………………………………………………

6.      My sister washes the dishes every day.

-         …………………………………………………………………………………………

7.      I do the housework with my brother.

-         …………………………………………………………………………………………

8.      Johnson gets good marks.

-         …………………………………………………………………………………………

9.      They love English.

-         …………………………………………………………………………………………

10. He studies Information Technology every night.

-         …………………………………………………………………………………………

11. He carries a big TV to the living room.

-         …………………………………………………………………………………………

12. She sends the letter to Mr. Brown.

-         …………………………………………………………………………………………

13. They sweep the floor every morning.

-         …………………………………………………………………………………………

14. He uses this pen to draw those pictures.

-         …………………………………………………………………………………………

15. Mrs. Linda visits us often.

-         …………………………………………………………………………………………

16. Lan plays basketball with her friends once a week.

-         …………………………………………………………………………………………

17. He often tells us a lot of funny stories.

-         …………………………………………………………………………………………

18. She helps me with that.

-         …………………………………………………………………………………………

19. Linda takes care of her sister very carefully.

-         …………………………………………………………………………………………

20. I bake cookies for breakfast twice a month.

-         …………………………………………………………………………………………

21. Mary opens some special gifts from her parents in the living room.

   - ……………………………………………………………………………………………

   22. They start their journey to Europe on Sunday morning.

   - ……………………………………………………………………………………………

   23. We send you some grapes on weekends.

   - ………………………………………………………………………………………………

   24. Does Miss Linda meets him at Mr. Bell’s house every month?

   - ……………………………………………………………………………………………

 

25. My mother buys this pencil for my little sister on Saturday.

    - ……………………………………………………………………………………………

26. We learn English at my friend’ s house from Tuesday to Thursday.

    - ……………………………………………………………………………………………

27. I plant many trees in the garden.

    - ……………………………………………………………………………………………

28. My grandfather often reads newspaper after breakfast.

    - ……………………………………………………………………………………………

29. They always play football on the street in the afternoon.

    - ……………………………………………………………………………………………

30. Mai usually eats lunch with her family in the restaurant.

    - ……………………………………………………………………………………………

31. I don’t finish my homework in time.

    - ……………………………………………………………………………………………

32. Tom never watches that film alone.

    - ……………………………………………………………………………………………

33. I sometimes write a letter to my mother.

    - ……………………………………………………………………………………………

34. The children play football in the field on weekends.

    - ……………………………………………………………………………………………

35. Mr. Green buys a new tractor?

    - ……………………………………………………………………………………………

36. The children play boardgame with their friends in the yard.

    - ……………………………………………………………………………………………

37. She never cleans the window without my help.

    - ………………………………………………………………………………………........

38. Nina always takes photos with her family on vacations.

    - …………………………………………………………………………………………....

39. Sam doesn’t learn English very well.

    - ……………………………………………………………………………………………

40. They build their house on the top of this mountain.

    - ……………………………………………………………………………………………

41. Do they write the report to their boss every week?

    - ………………….………………………………………………………………………...

42. We don’t read these novels.

    - ……………………………………………………………………………………………

43. Someone sweeps the floor in the morning.

    - ……………………………………………………………………………………………

44. I do my exercises  in the living room every day.

    - ……………………………………………………………………………………………

45. Cordelia often sings my favorite song.

    - ……………………………………………………………………………………………

46. He usually checks  his car twice a month.

    - ……………………………………………………………………………………………

47. They sometimes use this room for the teaching poor students.

    - ……………………………………………………………………………………………

48. His grandmother always tells a fairy tale for him and his friend every Monday.

    - ……………………………………………………………………………………………

49. Ashley often cuts the cake with a sharp knife.

    - ……………………………………………………………………………………………

50. The children look at the women with a red hat.

    - ……………………………………………………………………………………………

51. My sister usually does all her washing by hand.

    - ……………………………………………………………………………………………

52. The police finds the murderer in vain.

    - ……………………………………………………………………………………………

53. I put your gloves back in the drawer.

    - …………………………………………………………………………………………....

 có thưởng cho ai trả lời đúng và nhanh nhất( giải thưởng có hiệu lực đến 16:00 ngày 19/7/2023)

1
19 tháng 7 2023

Em chia nhỏ ra thành nhiều câu, như vậy sẽ được nhiều bạn giúp cùng một lúc, em sẽ nhận được sự trợ giúp nhanh và chi tiết. Vấn đề này cô đã nói rất nhiều lần rồi. Các em đăng nhiều bài trong một câu thế này không ai muốn giúp em cả!

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 biologist's role in society as well as his moral and ethical responsibility in the discovery and development of new ideas has led to a reassessment of his social and scientific value systems. A scientist can no longer ignore the consequences of his discoveries; he is as concerned with the possible misuses of his findings as he is with the basic...
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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 following questions

The biologist's role in society as well as his moral and ethical responsibility in the discovery and development of new ideas has led to a reassessment of his social and scientific value systems. A scientist can no longer ignore the consequences of his discoveries; he is as concerned with the possible misuses of his findings as he is with the basic research in which he is involved. This emerging social and political role of the biologist and all other scientists requires a weighing of values that cannot be done with the accuracy or the objectivity of a laboratory balance. As a member of society, it is necessary for a biologist now to redefine his social obligations and his functions, particularly in the realm of making judgments about such ethical problems as man's control of his environment or his manipulation of genes to direct further evolutionary development.

As a result of recent discoveries concerning hereditary mechanisms, genetic engineering, by which human traits are made to order, may soon be a reality. As desirable as it_may seem to be, such an accomplishment would entail many value judgments. Who would decide, for example, which traits should be selected for change? In cases of genetic deficiencies and disease, the desirability of the change is obvious, but the possibilities for social misuse are so numerous that they may far outweigh the benefits.

Probably the greatest biological problem of the future, as it is of the present, will be to find ways to curb environmental pollution without interfering with man's constant effort to improve the quality of his life. Many scientists believe that underlying the spectre of pollution is the problem of surplus human population. A rise in population necessitates an increase in the operations of modern industry, the waste products of which increase the pollution of air, water, and soil. The question of how many people the resources of the Earth can support is one of critical importance.

       Although the solutions to these and many other problems are yet to be found, they do indicate the need for biologists to work with social scientists and other members of society in order to determine the requirements necessary for maintaining a healthy and productive planet. For although many of man's present and future problems may seem to be essentially social, political, or economic in nature, they have biological ramifications that could affect the very existence of life itself.

The pronoun "it" in paragraph 2 refers to__________.

A. genetic engineering

B. an accomplishment

C. hereditary mechanism

D. a reality

1
9 tháng 4 2017

Đáp án là A

Dựa vào câu trước: As a result of recent discoveries concerning hereditary mechanisms, genetic engineering, by which human traits are made to order, may soon be a reality.