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 weeks before 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

ThefactisthatIcannot______thisdreadfulcough.

Tennisisa______inventedbyanEnglishmanonehundredyearsago.

Intheirlastmomentbeforetheflighttookoff,Iheardafathersayingtohisdaughter,"Iloveyou,Iwishyouenough."Thed

InBritain,peoplehavedifferentattitudestothepolice.Mostpeoplegenerallyappreciatethemandthejobtheydo—【C1】______

(Para.4,PassageThree)Testsshowedafallinbloodglucose(血糖)levels,reducingtheriskofdiabetes(糖尿病),reducewaistli

MostAmericansdon’tliketogetadvicefrommembersoftheirfamily.Whentheyneedadvice,theydon’tusually【C1】______people

Thechildwassorry()hismotherwhenhearrivedatthestation.

Withthedevelopmentofindustry,thisregionwillsurely().

A.Itiswidelyacceptedthattheculturalindustryhasbeenoneofthekeyindustriesindevelopedcountries.B.Nomatterhow

A、FinancesB、LaborC、EquipmentD、ProfitsA

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如图所示的电路，已知UCC=12V，RC=3kD,，β=40，且忽略UBE，若要使静态时UCE=9V，则RB应取()。

根据风险导向审计方法对财务报表审计要求，以下对审计测试流程的观点中不能认同的是()。

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