As our tests became more complex, sums up Spilich，-non-smokers performed better than smokers by wider and wider margins. He predicts smokers might perform adequately at many jobs until they got complicated. A smoking airline pilot could fly adequately if no problems arose but if something went wrong,smoking might damage his mental capacity.

　　2- 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.

　　【讲解答案】

　　2. C是非题。从文中的第三个测试就可排除A,从第一个测试就可排除B、D,因为在第一， In this simple test,smokers,deprived smokers and non-smokers performed equally well 正确的。

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