How many more decades will have to pass ______ scientists succeed in providing a cure for cancer?

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问题 How many more decades will have to pass ______ scientists succeed in providing a cure for cancer?

选项 A、when
B、since
C、before
D、until

答案C

解析 before常可用于将来时态，表示“才；就”，如：It will be several weeksbefore you are used to the new life in college．几个星期后你就会适应大学里的新生活了。A．when一般不与将来时态连用。B．since常与现在完成时连用。D．until直到，用在此处意义不符。

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本试题收录于：英语题库普高专升本分类

英语

普高专升本

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How many more decades will have to pass ______ scientists succeed in providing a cure for cancer?

英语

普高专升本

Yourhairwants______.You’dbetterhaveitdonetomorrow.

Mostpeoplewhotravellongdistancescomplainofjetlag.Jetlagmakesbusinesstravelerslessproductiveandmoreprone【C1】____

Anthropologistsbelievethatlaughterdatesbackmillionsofyears—wewerelaughinglongbeforewewereverballycommunicating.

Changesinthewaypeoplelivebringaboutchangesinthejobsthattheydo.Moreandmorepeopleliveintownsandcitiesinst

Tedhastoldmethathealwaysescapes______ashehasgotaveryfastsportcar.

Ithasbeenproposedthatwe______ourdecisionuntilthenextmeeting.

Shewantedtoknowwhat______atthemeeting.

TotheRomansPluto(冥王星)wasthoughttobetheGodto【C1】______allmenmusteventuallygo.They【C2】______himtobethegodofthe

Traditionally,universitieshavecarriedouttwomainactivities:researchandteaching.Manyexpertswouldarguethatboththes

IfeltsoembarrassedthatIcouldn’tdoanythingbut______therewhenIfirstmetmypresentboss.

当归补血口服液的君药是()。

A．撒布散B．调敷散C．袋装散D．煮散E．吹入散吹入鼻喉等腔道的散剂

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2014年1月1913，中共中央、国务院印发了《关于全面深化农村改革加快推进农业现代化的若干意见》，这是21世纪以来第11份中央()号文件。

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