单项选择题

This passage states that a person is really asleep only __________.

A．after experiencing a jerk
B．when his EEG reveals no alpha rhythm
C．after the completion of his alpha rhythm
D．when his EEG begins to show an alpha rhythm

<上一题目录下一题>

热门试题

单项选择题According to the author, the alpha state has been shown to be __________.

A．unmeasurable
B．controllable
C．unpleasant for some people
D．a brief burst of activity in the brain

单项选择题The word subject (Line 1, Para; 3) refers to __________.

A．measurement
B．instrument
C．dream
D．volunteer