Those of us who smoke should have______ lungs X-rayed regularly since we are all aware of

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Those of us who smoke should have______ lungs X-rayed regularly since we are all aware of the danger of smoking.

A.his

B.our

C.their

D.her

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  • 正确答案:B
    本题综合考查人称代词一致,空白处所填的词修饰thoseofus,所以应该用our。题意为,由于我们都知道吸烟的危害,(所以)我们当中那些吸烟的人应该定期做X光检查。