单选题：Those scientists are surprised to find that moderu forest an

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题目内容：
Those scientists are surprised to find that moderu forest and savanna elephants don' t have the same progenitor(祖先). A．True
B．False
C．Not Given
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答案解析：

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根据下面资料，回答题 How to Stay Young If you want to stay young, sit

根据下面资料，回答题 How to Stay Young If you want to stay young, sit down and have a go

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Face-to-face communication with others is better than the co

Face-to-face communication with others is better than the communication through

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下列风险控制方法中，适用于第一类危险源物控制的是(  )。

下列风险控制方法中，适用于第一类危险源物控制的是(  )。A．提高各类施工设施的可能性 A．提高各类施工设施的可能性 B．隔离危险物质 B．

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