More than one million Americans participated in the six-year study. Sleeping for less than 5 hours each night is better than sl

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问题 More than one million Americans participated in the six-year study.
Sleeping for less than 5 hours each night is better than sleeping for 5 hours.

选项 A、Right
B、Wrong
C、Not mentioned

答案B

解析

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职称英语卫生类B级

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