【单选题】

The first paragraph of this passage tells us about ______.
A．the rhythms of brain waves

B．the daily activities of sleep
C．the stages of sleep in cycles
D．the daily activities in cycles

查看答案解析

参考答案：

正在加载...

答案解析

正在加载...

根据网考网移动考试中心的统计，该试题：

2%的考友选择了A选项

25%的考友选择了B选项

68%的考友选择了C选项

5%的考友选择了D选项

The first paragraph of this passage tells us about ______.A．the rhythms of brain waves