What is the most important service of trees to man according to the passage? Which statement is true about the disappearance of

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问题 What is the most important service of trees to man according to the passage?
Which statement is true about the disappearance of forests?

选项 A、Man should look after the new trees properly.
B、Man has not paid enough attention to planting trees.
C、Man can’t cut too much wood.
D、All of the above.

答案D

解析 综合题。从全文可以看山,A、B、C 3个选项都是阻止树林消失的方法。
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