Doctors sometimes ______ old cures when modern medicine doesn’t work.

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问题 Doctors sometimes ______ old cures when modern medicine doesn’t work.

选项 A、fall on
B、fall down on
C、fall back on
D、fall in upon

答案C

解析题型：词汇题。fall back on意思是“借助于”，如：She has no relatives to fall back on．fall down (on)意思是“倒下，跪倒，失败，未能符合要求”。fall on意思是在什么时候发生、来临。比如：Her birthday will fall on a Friday this year．他今年的生日是在一个礼拜五。fall in upon意思是“不期而遇”。

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专业英语四级

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Doctors sometimes ______ old cures when modern medicine doesn’t work.

专业英语四级

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Aestheticthoughtofadistinctivelymodernbentemergedduringthe18thcentury.Thewesternphilosophersandcriticsofthist

Nomatterhowmuchyouflattenthehierarchiesatyourcompany,communicationcan’timproveifpeople’sdesksarestucktenfloo

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Foxesandfarmershavenevergotonwell.Thesesmalldog-likeanimalshavelongbeenaccusedofkillingfarmanimals.Theyare

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Thewealthofanationshouldbemeasured________thehealthandhappinessofitspeopleaswellasthematerialgoodsitcanp

简述中华民族的理想人格。

A、胃液酸度升高B、胃液酸度明显减少C、胃液酸度明显升高D、胃液酸度常减少E、胃液酸度正常或减少胃溃疡会有

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