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A survey has shown that 40% of those killed in traffic accidents if they had bee

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A survey has shown that 40% of those killed in traffic accidents if they had bee

A survey has shown that 40％ of those killed in traffic accidents _________ if they had been wearing seat belts．

A.should have been saved

B.must have been saved

C.need have been saved

D.could have been saved

试题答案

D

标签：trafficinkilledtheyif

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