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单选题
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.
参考答案
参考解析
解析：
细节题。第二段列举了森林减少的原因。
细节题。第二段列举了森林减少的原因。
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