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【题目】Private cars really provide much convenience to people, and __________ they cause too many problems.

A. meanwhile B. therefore

C. otherwise D. instead

【答案】A

【解析】句意:私家小汽车确实为人们提供了很多方便,与此同时,它们也带来很多麻烦。meanwhile同时,于此同时,符合句意。therefore因此,所以;otherwise否则;instead取而代之,然而。

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