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问题: 选词填空

environment|pollution|recycle|repair|throw away|wasteful
A.Why is it necessary to(1)( )things,like glass,paper and clothing?
B.Well,there are two or three reasons.Firstly,it saves money.It's very(2)( )not to reuse things.Secondly,it helps the(3)( ).When we(4)( )things we don't want any more,where do they go?Under the sea?In the earth?Too much rubbish can cause(5)( ).Thirdly,when we make many new things,we may use up the earth's resources one day.So it's much better to try to(6)( )broken things instead,or to try to reuse them.

解答:

recycle , wasteful , environment , throw away ,
pollution , repair