单项选择题

From the first paragraph we learn that the travel industry __________.

A．has improved its revenue
B．is financially healthier than ever
C．is going to give money to aid poverty
D．is better able to help reduce poverty than ever

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热门试题

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

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