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Heisnewcomertochemistrybuthehasmadeafewimportantdiscoveries.A．//B．a/C．atheD．thethe
题目详情
He is ___new comer to ___ chemistry but he has made a few important discoveries.
| A．/ / | B．a / | C．a the | D．the the |
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答案和解析
B
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