More than one million Americans participated in the six-year study. The findings indicate that it is all right to sleep for 6.5

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问题 More than one million Americans participated in the six-year study.
The findings indicate that it is all right to sleep for 6.5 hours a night.

选项 A、Right
B、Wrong
C、Not mentioned

答案A

解析

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职称英语卫生类B级

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