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【题目】The lady took________X-ray and she showed________X-ray to the doctor.

A.a;the

B.an;the

C.a;a

D.an;an

【答案】B

【解析】X-ray是以元音音素开头的词,其前的不定冠词要用an,先排除A和C;当第二次提到“X射线”时要用定冠词the,故答案为B。

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