单选题：People in the past preferred standing up to lying down when

题目内容：

People in the past preferred standing up to lying down when sleeping. A．Right
B．Wrong
C．Not mentioned.

参考答案：

答案解析：

第64题应选：

第64题应选：A．cause B．method C．treatment D．rule

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Why should anyone want to read abstracts of books by great authors when the rea

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