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,...
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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
I.Choose the correct answer for each sentence
1.It_______that the thinning of the ozone layer_________by smoke from mills,factories and industry
A.believes/causes
B.is believed/causes
C.believes/is caused
D.is believed/is caused
2.All flights to Ha Noi had to be cancelled__________the storm
A.as a result
B.due to
C.because
D.so
3.The first Thanksgiving_________by the Pilgrims in 1621
A.celebrated
B.was celebrated
C.is celebrated
D.has been celebrated
4.There_______be life in other planets,but I can't be sure
A.should
B.might
C.will
D.must
5.John asked_______I wanted to leave on the Moon
A.what
B.how
C.whether
D.who
6.Can you tell me__________?
A.how many planets orbiting the Sun
B.how many planets orbit the Sun
C.do how many planets orbit the Sun
D.how many planets do orbit the Sun