单项选择题

We can infer from the last paragraph that ______.

A．smokers should not expect to become airline pilots
B．smoking in emergency cases causes mental illness
C．no airline pilots smoke during flights
D．smokers may prove unequal to handling emergency cases

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热门试题

单项选择题

George Spilich's experiment was conducted in such a way as to ______.

A．compel the subjects to separate major information from minor details
B．put the subjects through increasingly complex tests
C．cheek the effectiveness of nicotine on smokers
D．register the prompt responses of the subjects

单项选择题

Which of the following statements is true

A．Active smokers in general performed better than deprived smokers.
B．Active smokers responded more quickly than the other subjects.
C．Non-smokers were not better than other subjects in performing simple tasks.
D．Deprived smokers gave the slowest responses to the various tasks.