He is new comer to chemistry but he has made a few important discoveries.A. /, /B. a, /C.

发布时间：2020-08-16 12:56:01


He is     new er to      chemistry but he has made a few important discoveries.
A. /, /
B. a, /
C. a, the
D. the, the

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A. /, /
(答案→)B. a, /
C. a, the
D. the, the
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