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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 In the first test, each subject sat before a computer screen and pressed a key as soon as he or she recognized a target letter among a grouping of 96. In this simple tests smokers, deprived smokers and non-smokers performed equally well. 注：第一句实验过程即细节，应该速读，第二句实验结果 The next test was more complex, requiring all to scan sequences of 20 identical letters and respond the instant one of the letters transformed into a different one. Non-smokers were faster, but under the stimulation of nicotine , active smokers were faster than deprived smokers. 注：1.第一句实验细节 2.stimulation 刺激 In the third test of short-term memory, non-smokers made the fewest errors, but deprived smokers committed fewer errors than active smokers. 注：committe=do （坏事） commite a crime The fourth test required people to read a passage, then answer questions about it. Nonsmokers remembered 19 percent more of the most important information than active smokers, and deprived smokers bested those who had smoked a cigarette just before testing. Active smokers tended not only to have poorer memories but also had trouble separating important information from insignificant details. 注：1.首句为实验过程 2.第二句为实验结果，作比较，可简写为 Nonsmoker remembered more than active smoker 3.划线的部分指的是active smoker. 即deprived smoker bested active smoker 4.best v. 胜过 23. The word bested most probably means ________. A) beatB) envied C) caught up with D) made the best of 注：词汇题，根据第5段末句的意思可推断为A选项。 | 
