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Reading two

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1 Reading two on Tue Jul 20, 2010 10:37 am

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What will happen if (1)______________ the Amazon forest is cut down?According to climatologists, two things are likely to happen: there will be serious effects on the world’s(2) ______________, the air that we breathe will lose some of its oxygen.Why is this?

Trees absord the gas carbon dioxide from the air, and give (3)_____________ oxygen into the air.The trees of the Amazon rain forest are chemically very active, and some scientists believe that they (4)_______________ 50% of the world’annual production of oxygen.(5) ______________ we lose the tropical forests, the air will contain much less oxygen and much more carbon dioxide. It will become difficult – perhaps even impossible- to breathe.

With more carbon dioxide in the air, the temperature will (6)__________________; the ice-caps at the North and South Poles will melt; the sea level will be flooded.

1.A many of B.more of C.many D.much

2.A atmosphere B.climate C.weather D.season

3.A in B. away C. up D.out

4.A.form B.take C.provide D.absord

5.A. if B.when C.although D.because

6.A.raise B.grow C.develop D.rise


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