题共用以下备选答案。A.微核试验B.显性致死试验C.细菌回复突变试验 D.骨髓染色体畸变试验E.程序外DNA合成试验检测

题共用以下备选答案。A.微核试验B.显性致死试验C.细菌回复突变试验 D.骨髓染色体畸变试验E.程序外DNA合成试验检测化学毒物的基因突变作用选用

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教育心理学家建议那些受孩子们“我觉得无聊”之类的话所累的父母,“无聊”远非某种不可挽回的判决,反而具有很多积极方面。它能

教育心理学家建议那些受孩子们“我觉得无聊”之类的话所累的父母,“无聊”远非某种不可挽回的判决,反而具有很多积极方面。它能激起孩子的创造力,帮助孩子观察、反思、理

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Wang prefers to live with an English family.

Wang prefers to live with an English family.

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What advice might Maquet give to those who have a crucial te

What advice might Maquet give to those who have a crucial test the next day?A.Me

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In their study, researchers led by Pierre Maquet took advant

In their study, researchers led by Pierre Maquet took advantage of the technique

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