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实验型文章的做题方法： 1、抓住实验代表人物 2、抓住实验目的 1)通常为实验开始前的动词不定式 2)实验目的=实验型文章的主题 3、抓住实验结果：实验结果-----直接结果和实验结论 Questions 21 to 25 are based on the following passage: 21. The purpose of George Spilichs experiments is _________. A) to test whether smoking has a positive effect on the mental capacity of smokers B) to show how smoking damages peoples mental capacity C) to prove that smoking affects peoples regular performance D) to find out whether smoking helps peoples short-term memory 22. George Spilichs 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 most probably means ________. A) beat B) envied C) caught up with D) made the best of | 
