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By the end of the next seminar, many issues like the development in biochemistry and medicine______.

A. will discuss

B. will be discussing

C. will be discussed

D. will have been discussed

 

考点:
答案:
D 【解析】 考查时态语态。句意:到下一次研讨班结束的时候,诸如生化及医药发展的话题讲已经被讨论。介词短语by the end of…意为“到…末为止”,通常和完成时连用,如果后面接将来时...
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