中文谷Aseriesofexperiments
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问题详情：
A series of experiments________ to be carried out.
A. has B. have C. are D. will
【回答】
A
知识点：动词
题型：选择题
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问题详情：
A series of experiments________ to be carried out.
A. has B. have C. are D. will
【回答】
A
知识点：动词
题型：选择题
