未分类题

The use of the term 'subjects' in the selection refers to
D.measurements.

A.waves.
B.dreams.
C.volunteers.

【参考答案】

C
解析:本题考查词义辨认。本文在第一段提㈩研究人员对一些志愿者“volunteers”进行睡眠研究,并将其记录......

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