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题目材料：
Benovians set their clocks back an hour for the winter. The result is that, during winter`s short days, it is light when most commuters drive to work, but dark when they drive back home. Darkness contributes to accidents. Changing the clocks, however, does not actually increase the amount of driving done in the dark, so it is unlikely to have any effect on Benovia`s automobile accident rate.
Which of the following is an assumption on which the argument relies?
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AThe average number of hours that Benovians drive when it is dark is greater for days during the winter than for days during other times of the year.
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BIn Benovia, hazards to safe driving that are made worse by darkness are as likely to occur in the morning as in the evening.
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CThe majority of cars on Benovia`s roads during a given day are those of people commuting to or from work.
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DThe majority of automobile accidents in Benovia take place when it is dark.
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EDriving conditions are no worse in Benovia in the winter than during the rest of the year.
B显示答案
