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5.23英语词汇检测题

您的姓名：[填空题]*

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学号：[填空题]*

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1.Duetostrictenvironmentallaws,thefactorymustfindan______energysourcetoreplacetraditionalcoal.[单选题]*

A.alternative(正确答案)

B.regenerate

C.promising

D.expensive

答案解析：

句子语境为“