I purposely ______ from extending these observations to any length.

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问题 I purposely ______ from extending these observations to any length.

选项 A、abstain
B、sustain
C、retain
D、detain

答案A

解析题意为：我故意避免在任何程度上扩大观察的范围。此题考查同词根动词辨析。abstain是不及物动词，abstain from为固定搭配，意思是“避免，戒除(烟、酒等)，弃权”。其他三个词均是及物动词。sustain的意思是“支撑，撑住，维持，持续”；retain意思是“保持，保留，雇用(律师)”；detain意思是“拘留，留住，阻止”。

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专业英语四级

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I purposely ______ from extending these observations to any length.

专业英语四级

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Americansbelievetimeisalimitedresource;theytrytoconserveandmanageit.PeopleintheU.S.often【C1】______seminarsor

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Spaceisadangerousplace,notonlybecauseofmeteors(流星)butalsobecauseofraysfromthesunandotherstars.Theatmospher

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