Li Lei didn’t meet the famous American professor_____ he was on holiday in America last year.

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问题 Li Lei didn’t meet the famous American professor_____ he was on holiday in America last year.

选项 A、unless
B、until
C、if
D、whether

答案B

解析本题考查的是由not…until引导的时间状语从句，表示“直到……才”，故B项为正确答案。又如：Ididn’t sleep until my mother got home．(直到妈妈回到家，我才入睡。)如果放于句首，句子要倒装，如：Not until mid-night did his father stop working．(直到午夜他父亲才停止工作。)

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本试题收录于：大学英语三级A级题库大学英语三级分类

大学英语三级A级

大学英语三级

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Li Lei didn’t meet the famous American professor_____ he was on holiday in America last year.

大学英语三级A级

大学英语三级

Thougheightyearshavepassed.Istillremember______toMr.Maduringmyvisitthere.

Itdoesn’tmatterwhosolvetheproblem；what______ishowtosolvetheproblem.

Serviceenterprisesincludemanykindsoffamiliarbusinesses.Examplesincludedrycleaners,shoerepairstores,barbershops,

July15,1994DearMrs.Smith,Thankyouforyourbusiness.Youarecurrentlyrepresentedinourdirectory,Thisistheonly

AvisitorinalargecityintheU.S.canfindalmostanykindofrestaurantbecause______.Accordingtothepassagewhichsta

Ifwe(know)______thatthebookswereavailable,wewouldhaveboughtthemyesterday.

WhydidMr.ZhaoQiangwritetoMr.Green?Becausehewantedto_____________________.WhatarethetwocountriesthatMr.Zha

Howarethesepartsofourbodyheldtogether?Theyareheldtogetherby______.Whatisthecolorofbonemarrow?

WiththeCanonS820D,printingphotoscouldn’tbeanyeasier.Youcanuseittheold-fashionedway,byconnectingittoacomput

______thenumberinfull-timeemploymentfellby2million,thenumberofpeopleinpart-timeworkdoubledtoover4million.

甲、乙两个自然人准备设立一从事商品批发的有限责任公司，经咨询得到以下的咨询意见，其中正确的有()

下列有关视网膜母细胞瘤的说法正确的是

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