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23. The word bested most probably means ________. A) beat B) envied C) caught up with D) made the best of 24. 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. 25. 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 Questions 21 to 25 are based on the following passage: Psychologist George Spilich and colleagues at Washington College in Chestertown, Maryland, decided to find out whether as many smokers say, smoking helps them to think and concentrate. Spilich put young non-smokers, active smokers and smokers deprived of cigarettes through a series of tests. 注：1.concentrate 集中注意力 2.第一段交待实验对象，实验目的 | 
