______a few years ago, the existence of sexual harassment in many businesses was scarcely acknowledged.

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问题 ______a few years ago, the existence of sexual harassment in many businesses was scarcely acknowledged.

选项 A、Before
B、Since
C、Until
D、Up to

答案C

解析 A项before在题句中是明显不通的;B项since一般说来与完成时连用,表示“自从……以来”到某一时刻为止的状况;D项up to作“直到,达到”讲时,经常接数量意义的词,如:Packages can be up to 150 lb(70 kg).“包裹的重量最多可达150磅(70千克);C项until作“直到”讲时,多与否定词连用,如not…until…“直到……才……”。稍加仔细考生会很容易看出,题句用的否定词是scarcely“几乎不”,所以scarcely…until与not…until类似,C项是答案。
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