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

Wehavetotryeverymeansto______thecostsoftheconstructionproject.

By1929,MickeyMousewasaspopular______childrenasCoca-Cola.

Aresomepeoplebornclever,andothersbornstupid?Orisintelligence(智力)developedbyourenvironmentandourexperience?Stra

Thelawyeradvisedhimtodropthe______,sincehestandslittlechancetowin.

Mostpeoplewhotravellongdistancescomplainofjetlag.Jetlagmakesbusinesstravelerslessproductiveandmoreprone【C1】____

Whenwomendobecomemanagers,dotheybringadifferentstyleanddifferentskillstothejob?Aretheybetter,orworse,manag

Tedhastoldmethathealwaysescapes______ashehasgotaveryfastsportcar.

A、MarkTwainwasveryhot-tempered.B、Theconductorwasquitecareless.C、Theserviceonthetrainwasbad.D、Themanwhowaspu

Howdowefindourwayoutofthelandusedproblem?Onewaymightbetoreexamineourvalues,tothinkinnewdirections.

Itoldthemnoteverybodycouldrunasfastasyoudid,______?

个体化药物治疗是指

EnrollmentinLosAngelespublicschoolsisexpectedtoplungebynearly30％overthenextdecade,leadingtotoughchoicesahea

留置胸膜腔引流管的目的不包括

通常采用现金结算，极少进行实物交割的衍生品合约是()。

根据《好客山东服务标准》对机场安检服务的要求：对于禁止携带的物品，机场安检工作人员将进行扣留暂时保管，并应礼貌地告知可在30日内凭取物证明取回。()

A.肠易激综合征B.结核性腹膜炎C.溃疡性结肠炎D.克罗恩病多为右下腹或脐周痉挛性阵痛伴腹鸣，进餐加重，排便缓解

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