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According to the latest study,most traffic accidents     be prevented if drivers are careful enough.
A.mustB.canC.have toD.need
B

试题分析:句意:根据最近的研究,如果司机足够小心的话,大部分交通事故都可以防止的。四个选项的含义分别是:A.must必须,B.can能够,可能,C.have to不得不, D.need需要,这里使用can表示“有客观的可能”,所以选B。
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