The fourth test required people to read a passage, then answer questions about it. Non- smokers 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.
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 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
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