3、抓住實驗結果：實驗結果-----直接結果和實驗結論

　　Questions 21 to 25 are based on the following passage:

　　21. The purpose of George Spilich's experiments is _________.

　　A) to test whether smoking has a positive effect on the mental capacity of smokers

　　B) to show how smoking damages people's mental capacity

　　C) to prove that smoking affects people's regular performance

　　D) to find out whether smoking helps people's short-term memory

　　22. 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) check the effectiveness of nicotine on smokers

　　D) register the prompt responses of the subjects

　　23. The word "bested" (Line 3, Para. 5) 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 (被剝奪) of cigarettes through a series of tests.

　　注：1.concentrate 集中注意力 2.第一段交待實驗對象，實驗目的

　　In the first test, each subject (試驗對象) 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：第一句實驗過程即細節，應該速讀，第二句實驗結果

　　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 (尼古丁), active smokers were faster than deprived smokers.

　　注：1.第一句實驗細節 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.