Unit 8 : Country life and City life - Hỏi đáp

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There are three main kinds of pollution – air pollution, water pollution, and noise pollution. Air, which is the most important element of our environment for our survival, can be polluted in many ways. Smoke in the air from mills, factories, and industry contains carbon monoxide, carbon dioxide, and methane, which are all poisonous gases. This leads to health problems like asthma and lung diseases, and the thinning of the ozone layer, which protects us from harmful UV rays. China, the USA, Russia, India, Mexico, and Japan are the world leaders in air pollution emissions. Water is also polluted by the discharge of commercial and industrial waste into surface water. Sewage in drinking water is another cause of water pollution as it contains germs and viruses. The noise of vehicles, mills, and factories can be really unbearable. This kind of constant sound also causes headaches, tension, mental stress, and migraines. People living next to a building site where there is too much noise can become sick, as they cannot sleep or relax. This is called noise pollution.

41.

Air pollution, water pollution, and soil pollution are three main kinds of pollution.

A. False

B. True

42.

Air plays the most important role in our survival.

A. False

B. True

43.

Carbon monoxide, carbon dioxide, and methane are poisonous gases.

A. True

B. False

44.

The ozone layer helps to protect people from harmful UV rays.

A. True

B. False

45.

China, the USA, Russia, India, Mexico, and Japan are the world leaders in air pollution prevention.

A. False

B. True

46.

The thinning of the ozone layer is caused by smoke in the air from mills, factories, and industry.

A. False

B. True

47.

Sewage contains germs and viruses.

A. False

B. True

48.

Noise pollution is caused by the discharge of commercial and industrial waste into lakes and rivers.

A. True

B. False

49.

Noise pollution affects everybody’s mental health.

A. True

B. False

50.

All people who live next to a building site become sick as they cannot sleep or relax.

A. False

B. True

Được cập nhật 3 tháng 6 lúc 16:50 1 câu trả lời

khoanh vào đáp án đúng

19. Mary has lost her has and she.......... for it until now

a. have been looking b. have looked c. has look d. has been looking

20. i............... that film several times because i like it

a. has seen b. has been seing c. have saw d. have seen

21. listen ! i think someone............... at the door

a. are knocking b. has knocked c. is knocking d. have knocked

22. up to the present, we................................ almost every lesson in the book

a. are writting b. have writen c. has writen d. is writting

23. the earth....................... the sun once every 365 days

a. circle b. circles c. is circling d. are circling

24. the farmers........................ in the field at the moment

a. is working b. are working c. have worked d. work

25. How many times you................... him since he went to Edinburgh?

a. do...... see b. has....... Seen c. have ...... seen d. are seeing

26. rivers usually...................... to the sea

a. flow b. is flowing c. have flown d. has flown

27. look! the boy...........................

a. is crying b. are crying c. has cried d. cries

28. do you know that man who often................ here ?

a. a smokes b. smoke c. has smoked d. have smoked

29. Mrs Green always.................. to work by bus

a. go b. goes c. has gone d. is going

30. we are from french. we .................... there for 20 years

a. has been b. are c. have been d. are being

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Building.