K
Khách

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

12 tháng 12 2018

Đáp án B

Choose the best answer A, B, C, or D to complete each sentence (1.5 pts)1. I love her painting because she is very …….. in using color.careless    B. creative    C. beautiful    D. rich2. You can avoid some diseases by  ………. yourself clean.taking    B. looking    C. doing    D. keeping3. She isn’t good at drawing, and her brother isn’t, ……….too    B. neither    C. either    D. so4. We have no salt left. Let’s go shopping and buy ……….some    B. any    C. one    D. two5. I ………. blood twice, and...
Đọc tiếp

Choose the best answer A, B, C, or D to complete each sentence (1.5 pts)

1. I love her painting because she is very …….. in using color.

careless    B. creative    C. beautiful    D. rich

2. You can avoid some diseases by  ………. yourself clean.

taking    B. looking    C. doing    D. keeping

3. She isn’t good at drawing, and her brother isn’t, ……….

too    B. neither    C. either    D. so

4. We have no salt left. Let’s go shopping and buy ……….

some    B. any    C. one    D. two

5. I ………. blood twice, and ………. presents to sick children at the hospital recently.

donate/ gave        B. am donating/ give

    C. have donated/ have given    D. have donated/ gave

6. Mary: “Oh, no. I’m putting on weight.” - Susan: “ ……….”

Do more exercise.    B. It’s all right.

    C. Eat more meat.        D. Wash your hands more often.

 

2
18 tháng 12 2021

Choose the best answer A, B, C, or D to complete each sentence (1.5 pts)

1. I love her painting because she is very …….. in using color.

careless    B. creative    C. beautiful    D. rich

2. You can avoid some diseases by  ………. yourself clean.

taking    B. looking    C. doing    D. keeping

3. She isn’t good at drawing, and her brother isn’t, ……….

too    B. neither    C. either    D. so

4. We have no salt left. Let’s go shopping and buy ……….

some    B. any    C. one    D. two

5. I ………. blood twice, and ………. presents to sick children at the hospital recently.

donate/ gave        B. am donating/ give

    C. have donated/ have given    D. have donated/ gave

6. Mary: “Oh, no. I’m putting on weight.” - Susan: “ ……….”

Do more exercise.    B. It’s all right.

    C. Eat more meat.        D. Wash your hands more often.

18 tháng 12 2021

1-B
2-D
3-B
4-C
5-A
6-A

V. Choose the best answer to complete each sentence, identify your answer by circling the corresponding letter A, B, C, or D. )(4.0 points)1. Daisy is not doing ___________ at all, just gazing out of the window.                A. something             B. nothing           C. anythingD. one thing2. Is this book ___________? Yes, it's mine.                A. you're               B. yours             C. youD. your3. My parents and I ___________ our grandmother next weekend.                 A....
Đọc tiếp

V. Choose the best answer to complete each sentence, identify your answer by circling the corresponding letter A, B, C, or D. )(4.0 points)

1. Daisy is not doing ___________ at all, just gazing out of the window.

                A. something

             B. nothing

           C. anything

D. one thing

2. Is this book ___________? Yes, it's mine.

                A. you're

               B. yours

             C. you

D. your

3. My parents and I ___________ our grandmother next weekend.

                 A. visit

              B. am going to visit 

C. am visiting

D. are going to visit

4. There are __________stores on the street.

                A. hundreds of

          B. hundreds

       C. hundred of

D. of hundreds

5. I don’t want much sugar in coffee. Just ___________, please.

                  A. a little

               B. little

          C. few

D. a few

6. At an intersection, we must___________.

                  A. ride quickly

        B. go fast

  C. slow down

D. run out

7. Look ___________ that strange man! He is looking ___________ Lan but she isn’t here.

                  A. for/ at

                B. at/  for

           C. at/ after

D. at/ on

8. You are too fat. You shouldn’t eat much___________.

                   A. meat

                B. fruit

           C. fish

D. vegetables

9. ___________ straight across the road.

                   A. Don’t run

            B. Not run

       C. No running

D. Can’t run

10. When she gets good marks, her parents often feel ___________.

                  A. hungry

                B. thirsty

           C. happy

D. worried     

11. Of the three students, Nga is ___________.

                 A. the best

                B. good

           C. better

 D. well

12. Miss Mai always ___________ her own clothes.

 

               A. does

              B. wants

         C. cooks

D. makes

 

13. My brother  ___________ the answer to the question now.

 

A. know

B. knows

C. to know

D. knowing

14. Where are the ___________ ? On the  table

 

A. childrens' books

B. children books

C.books' children

D. children's books

15. They can’t wait___________tomorrow. They must go now.

 

A. after

B. before

C. until

D. on

16. Listen carefully ___________our teacher, please!

 

A. with

B. to

C. for  

D. in

17. They often go to Ho Chi Minh City___________air.

 

A. by

B. in

C. with

D. on

18. - ___________ do you visit your hometown? - Once every two or three months.

 

A. How long

B. How often

C. How much

D. How many

19. We don't need ___________ money to buy that book.

 

A. many

B. a few

C. a lot

D. much

 20. What time do you often arrive ___________?

 

A. home

B. to home

C. to the home

D. at home

1
19 tháng 2 2022
1. C
2. B
3. D
4. C
5. A
6.C
7.B
8. A
9.A
10. D

11. A

12. D

13. D

14. A

15. B 

16. A

17. A

18. B

19. D

20.A

  
V. Choose the best answer to complete each sentence, identify your answer by circling the corresponding letter A, B, C, or D. )(4.0 points)1. Daisy is not doing ___________ at all, just gazing out of the window.                A. something             B. nothing           C. anythingD. one thing2. Is this book ___________? Yes, it's mine.                A. you're               B. yours             C. youD. your3. My parents and I ___________ our grandmother next weekend.                 A....
Đọc tiếp

V. Choose the best answer to complete each sentence, identify your answer by circling the corresponding letter A, B, C, or D. )(4.0 points)

1. Daisy is not doing ___________ at all, just gazing out of the window.

                A. something

             B. nothing

           C. anything

D. one thing

2. Is this book ___________? Yes, it's mine.

                A. you're

               B. yours

             C. you

D. your

3. My parents and I ___________ our grandmother next weekend.

                 A. visit

              B. am going to visit 

C. am visiting

D. are going to visit

4. There are __________stores on the street.

                A. hundreds of

          B. hundreds

       C. hundred of

D. of hundreds

5. I don’t want much sugar in coffee. Just ___________, please.

                  A. a little

               B. little

          C. few

D. a few

6. At an intersection, we must___________.

                  A. ride quickly

        B. go fast

  C. slow down

D. run out

7. Look ___________ that strange man! He is looking ___________ Lan but she isn’t here.

                  A. for/ at

                B. at/  for

           C. at/ after

D. at/ on

8. You are too fat. You shouldn’t eat much___________.

                   A. meat

                B. fruit

           C. fish

D. vegetables

9. ___________ straight across the road.

                   A. Don’t run

            B. Not run

       C. No running

D. Can’t run

10. When she gets good marks, her parents often feel ___________.

                  A. hungry

                B. thirsty

           C. happy

D. worried      

11. Of the three students, Nga is ___________.

                 A. the best

                B. good

           C. better

 D. well

12. Miss Mai always ___________ her own clothes.

 

               A. does

              B. wants

         C. cooks

D. makes

 

13. My brother  ___________ the answer to the question now.

 

A. know

B. knows

C. to know

D. knowing

14. Where are the ___________ ? On the  table

 

A. childrens' books

B. children books

C. books' children

D. children's books

15. They can’t wait___________tomorrow. They must go now.

 

A. after

B. before

C. until

D. on

16. Listen carefully ___________our teacher, please!

 

A. with

B. to

C. for  

D. in

17. They often go to Ho Chi Minh City___________air.

 

A. by

B. in

C. with

D. on

18. - ___________ do you visit your hometown? - Once every two or three months.

 

A. How long

B. How often

C. How much

D. How many

19. We don't need ___________ money to buy that book.

 

A. many

B. a few

C. a lot

D. much

 20. What time do you often arrive ___________?

 

A. home

B. to home

C. to the home

D. at home

3
20 tháng 2 2022

1. Daisy is not doing ___________ at all, just gazing out of the window.

                A. something

             B. nothing

           C. anything

D. one thing

2. Is this book ___________? Yes, it's mine.

                A. you're

               B. yours

             C. you

D. your

3. My parents and I ___________ our grandmother next weekend.

                 A. visit

              B. am going to visit 

C. am visiting

D. are going to visit

4. There are __________stores on the street.

                A. hundreds of

          B. hundreds

       C. hundred of

D. of hundreds

5. I don’t want much sugar in coffee. Just ___________, please.

                  A. a little

               B. little

          C. few

D. a few

6. At an intersection, we must___________.

                  A. ride quickly

        B. go fast

  C. slow down

D. run out

7. Look ___________ that strange man! He is looking ___________ Lan but she isn’t here.

                  A. for/ at

                B. at/  for

           C. at/ after

D. at/ on

8. You are too fat. You shouldn’t eat much___________.

                   A. meat

                B. fruit

           C. fish

D. vegetables

9. ___________ straight across the road.

                   A. Don’t run

            B. Not run

       C. No running

D. Can’t run

10. When she gets good marks, her parents often feel ___________.

                  A. hungry

                B. thirsty

           C. happy

D. worried      

 
20 tháng 2 2022

1. C
2. B
3. D
4. C
5. A
6.C
7.B
8. A
9.A
10. D

11. A

12. D

13. D

14. A

15. B 

16. A

17. A

18. B

19. D

20.A

V. Choose the best answer to complete each sentence, identify your answer by circling the corresponding letter A, B, C, or D. )(4.0 points)1. Daisy is not doing ___________ at all, just gazing out of the window.                A. something             B. nothing           C. anythingD. one thing2. Is this book ___________? Yes, it's mine.                A. you're               B. yours             C. youD. your3. My parents and I ___________ our grandmother next weekend.                 A....
Đọc tiếp

V. Choose the best answer to complete each sentence, identify your answer by circling the corresponding letter A, B, C, or D. )(4.0 points)

1. Daisy is not doing ___________ at all, just gazing out of the window.

                A. something

             B. nothing

           C. anything

D. one thing

2. Is this book ___________? Yes, it's mine.

                A. you're

               B. yours

             C. you

D. your

3. My parents and I ___________ our grandmother next weekend.

                 A. visit

              B. am going to visit 

C. am visiting

D. are going to visit

4. There are __________stores on the street.

                A. hundreds of

          B. hundreds

       C. hundred of

D. of hundreds

5. I don’t want much sugar in coffee. Just ___________, please.

                  A. a little

               B. little

          C. few

D. a few

6. At an intersection, we must___________.

                  A. ride quickly

        B. go fast

  C. slow down

D. run out

7. Look ___________ that strange man! He is looking ___________ Lan but she isn’t here.

                  A. for/ at

                B. at/  for

           C. at/ after

D. at/ on

8. You are too fat. You shouldn’t eat much___________.

                   A. meat

                B. fruit

           C. fish

D. vegetables

9. ___________ straight across the road.

                   A. Don’t run

            B. Not run

       C. No running

D. Can’t run

10. When she gets good marks, her parents often feel ___________.

                  A. hungry

                B. thirsty

           C. happy

D. worried     

11. Of the three students, Nga is ___________.

                 A. the best

                B. good

           C. better

 D. well

12. Miss Mai always ___________ her own clothes.

 

               A. does

              B. wants

         C. cooks

D. makes

 

13. My brother  ___________ the answer to the question now.

 

A. know

B. knows

C. to know

D. knowing

14. Where are the ___________ ? On the  table

 

A. childrens' books

B. children books

C.books' children

D. children's books

15. They can’t wait___________tomorrow. They must go now.

 

A. after

B. before

C. until

D. on

16. Listen carefully ___________our teacher, please!

 

A. with

B. to

C. for  

D. in

17. They often go to Ho Chi Minh City___________air.

 

A. by

B. in

C. with

D. on

18. - ___________ do you visit your hometown? - Once every two or three months.

 

A. How long

B. How often

C. How much

D. How many

19. We don't need ___________ money to buy that book.

 

A. many

B. a few

C. a lot

D. much

 20. What time do you often arrive ___________?

 

A. home

B. to home

C. to the home

D. at home

0
I. Choose the best answer A, B, C or D to complete each sentence. 1. The word with a different stress pattern from the others is …. A. unpolluted B. unbalanced C. unreasonable D. unlawful 2. Global communication was changed by…………….of the Internet. A. invent B. invention C. inventor D. invented 3. Air pollution, together with littering, has………many problems in our large cites today. A. caused B. made C. affected D. brought 4. Australia is a …….what the planet Earth will be like in 100 years’...
Đọc tiếp

I. Choose the best answer A, B, C or D to complete each sentence. 1. The word with a different stress pattern from the others is …. A. unpolluted B. unbalanced C. unreasonable D. unlawful 2. Global communication was changed by…………….of the Internet. A. invent B. invention C. inventor D. invented 3. Air pollution, together with littering, has………many problems in our large cites today. A. caused B. made C. affected D. brought 4. Australia is a …….what the planet Earth will be like in 100 years’ time. A. exceptional B. scenic C. iconic D. unique 5. My brother had never been abroad ………he joined the army. A. since B. until C. during D. while 6. All our beautiful forests………if we do nothing to preserve them. A. will destroy B. will be destroyed C. would destroy D. would be destroyed 7. I’d be over the moon if I ……..a chance to go to Disneyland in California. A. have B. had C. will have D. would have 8. In message board you can……….messages pr post questions. A. raise B. arrive C. text D. leave 9. You shrug your shoulders means “……………….”. A. I’m hungry. B. I don’t know. C. I’m angry. D. Sorry. I need to go now. 10. Using music, codes or signs to communicate is called…….…communication. A. verbal B. non-verbal C. public D. non-public 11. I experienced one communication………in Japan when I didn’t understand their body. A. breakdown B. technique C.ability D. device 12. John managed……………..his family in England by using Zalo. A. contact B. to contact C. contacting D. contacts 13. We……….with each other by mobile phone in 2050. A. won’t be communicating B. aren’t communicating C. haven’t communicated D. aren’t going to communicate 14. The word with a different stress pattern from the others is …. A. helpless B. unless C. painless D. airless 15. Working hours will fall to under 35 a week, ………………? A. will they B. won’t they C. won’t it D. will it 16. My grandma…………….a lot of pleasure from gardening. A. does B. has C. makes D. gets 17. From 1856 to 1875, a remarkable……..of inventions was produced. A. diversity B. mixture C. variety D. collection 18. Do you think there……less conflict in the world if all people……the same language? A. would be/ spoke B. is/ spoke C. were/ speak D. is/ will speak 19. Thousands of people…….by natural disasters every year. A. are affected B. are affecting C. have affected D. were affected 20. -“No one was killed in the forest fire two days ago.” - “________.” A. Oh dear B. That’s shocking C. That’s a relief D. How terrible 21. We cannot present natural disasters, but we can……….for them. A. defeat B. invent C. struggle D. prepare 22. Hundreds of people were made…………after the flood. A. homeless B. helpless C. careless D. endless 23. Water.............make some aquatic animals die. A.pollution B.pollute C.polluted D.polluting II. Complete the sentences, using the correct forms of the verbs in brackets. 1. Goodbye, Mr. Quynh! I …………………(phone) you as soon as I arrive home. 2. Hundred of trees on street in Ha Noi……………………..(fall) in a sudden storm last night. 3. I ………...……(not seen) a more horrible flood than this since I ……….(live) in this area. 4.Listen! He (sing)......................... 5.Most people (leave)...............their houses before the volcano erupted 6.The lesson (start)....................at 7.00.am

2
29 tháng 4 2021

I. Choose the best answer A, B, C or D to complete each sentence.

1. The word with a different stress pattern from the others is ….

A. unpolluted B. unbalanced C. unreasonable D. unlawful

2. Global communication was changed by…………….of the Internet.

A. invent B. invention C. inventor D. invented

3. Air pollution, together with littering, has………many problems in our large cites today.

A. caused B. made C. affected D. brought

4. Australia is a …….what the planet Earth will be like in 100 years’ time.

A. exceptional B. scenic C. iconic D. unique

5. My brother had never been abroad ………he joined the army.

A. since B. until C. during D. while

6. All our beautiful forests………if we do nothing to preserve them.

A. will destroy B. will be destroyed C. would destroy D. would be destroyed

7. I’d be over the moon if I ……..a chance to go to Disneyland in California.

A. have B. had C. will have D. would have

8. In message board you can……….messages pr post questions.

A. raise B. arrive C. text D. leave

9. You shrug your shoulders means “……………….”.

A. I’m hungry. B. I don’t know. C. I’m angry. D. Sorry. I need to go now.

10. Using music, codes or signs to communicate is called…….…communication.

A. verbal B. non-verbal C. public D. non-public

11. I experienced one communication………in Japan when I didn’t understand their body.

A. breakdown B. technique C.ability D. device

12. John managed……………..his family in England by using Zalo.

A. contact B. to contact C. contacting D. contacts

13. We……….with each other by mobile phone in 2050.

A. won’t be communicating B. aren’t communicating C. haven’t communicated D. aren’t going to communicate

14. The word with a different stress pattern from the others is ….

A. helpless B. unless C. painless D. airless

15. Working hours will fall to under 35 a week, ………………?

A. will they B. won’t they C. won’t it D. will it

16. My grandma…………….a lot of pleasure from gardening.

A. does B. has C. makes D. gets

17. From 1856 to 1875, a remarkable……..of inventions was produced.

A. diversity B. mixture C. variety D. collection

18. Do you think there……less conflict in the world if all people……the same language?

A. would be/ spoke B. is/ spoke C. were/ speak D. is/ will speak

19. Thousands of people…….by natural disasters every year.

A. are affected B. are affecting C. have affected D. were affected

20. -“No one was killed in the forest fire two days ago.” - “________.”

A. Oh dear B. That’s shocking C. That’s a relief D. How terrible

21. We cannot present natural disasters, but we can……….for them.

A. defeat B. invent C. struggle D. prepare

22. Hundreds of people were made…………after the flood.

A. homeless B. helpless C. careless D. endless

23. Water.............make some aquatic animals die.

A.pollution B.pollute C.polluted D.polluting 

29 tháng 4 2021

II. Complete the sentences, using the correct forms of the verbs in brackets.

1. Goodbye, Mr. Quynh! I will phone (phone) you as soon as I arrive home.

2. Hundred of trees on street in Ha Noi…………fell…………..(fall) in a sudden storm last night.

3. I ……haven't seen…...……(not seen) a more horrible flood than this since I ……lived….(live) in this area.

4.Listen! He (sing)................is singing.........

5.Most people (leave).........had left......their houses before the volcano erupted

6.The lesson (start)......starts..............at 7.00.am

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 38 to 42.  Lead poisoning in children is a major health concern. Both low and high doses of paint can have serious effects. Children exposed to high doses of lead often suffer permanent nerve damage, mental retardation, blindness, and even death. Low doses of lead can lead to mild mental retardation, short attention spans, distractibility, poor academic...
Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 38 to 42.

  Lead poisoning in children is a major health concern. Both low and high doses of paint can have serious effects. Children exposed to high doses of lead often suffer permanent nerve damage, mental retardation, blindness, and even death. Low doses of lead can lead to mild mental retardation, short attention spans, distractibility, poor academic performance, and behavioral problems.

          This is not a new concern. As early as 1904, lead poisoning in children was linked to lead-based paint. Microscopic lead particles from paint are absorbed into the bloodstream when children ingest flakes of chipped paint,plaster,or paint dust from sanding. Lead can also enter the body through household dust, nailbiting, thumb sucking, or chewing on toys and other objects painted with lead-based paint. Although American paint companies today must comply with strict regulations regarding the amount of lead used in their paint, this source of lead poisoning is still the most common and most dangerous. Children living in older, dilapidated houses are particularly at risk.

The phrase "exposed to" in line 2 could best be replaced by which of the following?

A. in contact with 

B. familiar with

C. displaying

D. conducting

1
13 tháng 8 2019

Đáp án A

Cụm từ "exposed to" ở dòng 2 có thể được thay thế bằng?

A. tiếp xúc với                       

B. quen với

C. hiển thị                              

D. tiến hành

"exposed to" = in contact with: tiếp xúc với

Children exposed to high doses of lead often suffer permanent nerve damage, mental retardation, blindness, and even death.

Trẻ tiếp xúc với chì ở liều lượng cao thường bị tổn thương lâu dài về thần kinh, thiểu năng trí tuệ, mù mắt, thậm chí mất mạng.

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 42.    Lead poisoning in children is a major health concern. Both low and high doses of paint can have serious effects. Children exposed to high doses of lead often suffer permanent nerve damage, mental retardation, blindness, and even death. Low doses of lead can lead to mild mental retardation, short attention spans, distractibility, poor...
Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 42.

    Lead poisoning in children is a major health concern. Both low and high doses of paint can have serious effects. Children exposed to high doses of lead often suffer permanent nerve damage, mental retardation, blindness, and even death. Low doses of lead can lead to mild mental retardation, short attention spans, distractibility, poor academic performance, and behavioral problems.

   This is not a new concern. As early as 1904, lead poisoning in children was linked to lead-based paint. Microscopic lead particles from paint are absorbed into the bloodstream when children ingest flakes of chipped paint,plaster,or paint dust from sanding. Lead can also enter the body through household dust, nailbiting, thumb sucking, or chewing on toys and other objects painted with lead-based paint. Although American paint companies today must comply with strict regulations regarding the amount of lead used in their paint, this source of lead poisoning is still the most common and most dangerous. Children living in older, dilapidated houses are particularly at risk.

Question: The phrase "exposed to" in line 2 could best be replaced by which of the following?

A. in contact with

B. familiar with

C. displaying

D. conducting

1
29 tháng 12 2019

Đáp án A.

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 38 to 42.   Lead poisoning in children is a major health concern. Both low and high doses of paint can have serious effects. Children exposed to high doses of lead often suffer permanent nerve damage, mental retardation, blindness, and even death. Low doses of lead can lead to mild mental retardation, short attention spans, distractibility, poor academic...
Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 38 to 42.

  Lead poisoning in children is a major health concern. Both low and high doses of paint can have serious effects. Children exposed to high doses of lead often suffer permanent nerve damage, mental retardation, blindness, and even death. Low doses of lead can lead to mild mental retardation, short attention spans, distractibility, poor academic performance, and behavioral problems.

  This is not a new concern. As early as 1904, lead poisoning in children was linked to lead-based paint. Microscopic lead particles from paint are absorbed into the bloodstream when children ingest flakes of chipped paint,plaster,or paint dust from sanding. Lead can also enter the body through household dust, nailbiting, thumb sucking, or chewing on toys and other objects painted with lead-based paint. Although American paint companies today must comply with strict regulations regarding the amount of lead used in their paint, this source of lead poisoning is still the most common and most dangerous. Children living in older, dilapidated houses are particularly at risk.

The phrase "exposed to" in line 2 could best be replaced by which of the following?

A. in contact with

B. familiar with

C. displaying 

D. conducting

1
30 tháng 4 2019

Đáp án A

Cụm từ "exposed to" ở dòng 2 có thể được thay thế bằng?

A. tiếp xúc với

B. quen với

C. hiển thị

D. tiến hành

"exposed to" = in contact with: tiếp xúc với

Children exposed to high doses of lead often suffer permanent nerve damage, mental retardation, blindness, and even death.

Trẻ tiếp xúc với chì ở liều lượng cao thường bị tổn thương lâu dài về thần kinh, thiểu năng trí tuệ, mù mắt, thậm chí mất mạng.

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 38 to 42.  Lead poisoning in children is a major health concern. Both low and high doses of paint can have serious effects. Children exposed to high doses of lead often suffer permanent nerve damage, mental retardation, blindness, and even death. Low doses of lead can lead to mild mental retardation, short attention spans, distractibility, poor academic...
Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 38 to 42.

  Lead poisoning in children is a major health concern. Both low and high doses of paint can have serious effects. Children exposed to high doses of lead often suffer permanent nerve damage, mental retardation, blindness, and even death. Low doses of lead can lead to mild mental retardation, short attention spans, distractibility, poor academic performance, and behavioral problems.

  This is not a new concern. As early as 1904, lead poisoning in children was linked to lead-based paint. Microscopic lead particles from paint are absorbed into the bloodstream when children ingest flakes of chipped paint,plaster,or paint dust from sanding. Lead can also enter the body through household dust, nailbiting, thumb sucking, or chewing on toys and other objects painted with lead-based paint. Although American paint companies today must comply with strict regulations regarding the amount of lead used in their paint, this source of lead poisoning is still the most common and most dangerous. Children living in older, dilapidated houses are particularly at risk.

 

The phrase "exposed to" in line 2 could best be replaced by which of the following?

A. in contact with

B. familiar with

C. displaying 

D. conducting

1
23 tháng 4 2018

Đáp án A

Cụm từ "exposed to" ở dòng 2 có thể được thay thế bằng?

A. tiếp xúc với

B. quen với

C. hiển thị

D. tiến hành

"exposed to" = in contact with: tiếp xúc với

Children exposed to high doses of lead often suffer permanent nerve damage, mental retardation, blindness, and even death.

Trẻ tiếp xúc với chì ở liều lượng cao thường bị tổn thương lâu dài về thần kinh, thiểu năng trí tuệ, mù mắt, thậm chí mất mạng.