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【题目】________online courses can produce good results remains to be seen

A. That B. Whether

C. Who D. Where

【答案】B

【解析】根据从句网上课程是否能取得好效果(“whether online courses can produce good results”)是主句这件事拭目以待(“…remains to be seen”)的主语,该句主语从句。根据从句的从属连词具有是否的含义,该题选whether

句意:网上课程是否能取得好效果仍然拭目以待。

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