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.
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 peoples mental capacity
C) to prove that smoking affects peoples regular performance
D) to find out whether smoking helps peoples short-term memory
注:实验目的题,A 项为第一段实验目的同义改写,B,C 项为吸烟的负面影响与文中意思相反
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.
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
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