The Earth is about 4,600 million years old.People have lived on it for over 3 million years.During this period we have changed our planet a lot in many ways.Some people's activities are very good (1)CC some are bad for the Earth.
All over the world,people cut down (2)DD trees,so more and more kinds of animals and plants are disappearing. (3)AA big cities,cars pollute the air.Factories pollute the land and the water.
Around the Earth,there's (4)DD special kind of oxygen called "ozone(臭氧)".It is important to the Earth.But now air pollution (5)CC it.And it makes a very big hole in the ozone layer.Too much harmful light from the sun passes through it and arrives on Earth (6)AA.This is very terrible because it (7)DD make people get ill.
There is more and more CO2 in the air.It mainly comes from burning (8)AA kinds of materials(材料).It forms a "blanket" around the Earth.The heat(熱)from the sun couldn't leave for other places,so the temperature is getting higher and higher.This makes (9)CC Earth become warmer and warmer.And this makes the level of the ocean rise.
All these problems are very serious.We must do something (10)DD the Earth from being polluted.
(1) | A.or | B.because | C.but | D.so |
(2) | A.million | B.millions | C.million of | D.millions of |
(3) | A.In | B.For | C.On | D.Of |
(4) | A./ | B.the | C.a(chǎn)n | D.a(chǎn) |
(5) | A.destroy | B.destroyed | C.is destroying | D.will destroy |
(6) | A.easily | B.easy | C.easier | D.easiest |
(7) | A.must | B.should | C.need | D.can |
(8) | A.different | B.more different | C.most different | D.the most different |
(9) | A.we | B.us | C.our | D.ours |
(10) | A.stop | B.stopping | C.stopped | D.to stop |
【考點(diǎn)】說明文;環(huán)境保護(hù).
【答案】C;D;A;D;C;A;D;A;C;D
【解答】
【點(diǎn)評(píng)】
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發(fā)布:2024/7/28 8:0:9組卷:11引用:2難度:0.5
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