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:

Aeroplanes usually do not need to climb quickly or fly high

Aeroplanes usually do not need to climb quickly or fly high in the polar region

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劳动者可以在以下机构进行职业病诊断(  )。

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根据以下答案,回答题 A.应当无毒、无害,符合应当有的营养要求 B.应当有与产品品种,数量相适应的食品原料处理、加工、包

根据以下答案,回答题 A.应当无毒、无害,符合应当有的营养要求 B.应当有与产品品种,数量相适应的食品原料处理、加工、包装、贮存等厂房或者场所 C.直接入

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Dialogue TwoSpeaker A: Good morning, sir. Can I help you?S

Dialogue TwoSpeaker A: Good morning, sir. Can I help you?Speaker B: Yes, I'

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县级以上地方人民政府(  )。

县级以上地方人民政府(  )。

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