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NO.126
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本题平均耗时：2分16秒
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正确率：68%
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题目来源 : 填空经典1500题
Select the two answer choices that, when used to complete the sentence, fit the meaning of the sentence as a whole and produce completed sentences that are alike in meaning.

Although men still dominate the ranks of full professors in the field of astronomy, the increasing numbers of younger women in the field could _____ a change in its gender mix. 

require
alleviate
block
presage
portend
hinder

Select two answer choices.

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