单选题：Why do forests in many parts of the world slowly disappear?

题目内容：
Why do forests in many parts of the world slowly disappear? A．New trees are not looked after properly．
B．Many trees have been cut down by man．
C．Man has not paid enough attention to planting trees．
D．All of the above．

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答案解析：

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分类：成人英语三级  题型：单选题
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分类：成人英语三级  题型：单选题
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