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

A、He’sinhisoffice.B、He’sinameeting.C、He’sonabusinesstrip.D、He’sonholiday.BW:I’dliketoseeyourmanager.M:So

Whenyouuseyouroldpersonalrecordtowritearesume,you’dbetter______.Whichcouldbethebesttitleforthispassage?

Serviceenterprisesincludemanykindsoffamiliarbusinesses.Examplesincludedrycleaners,shoerepairstores,barbershops,

Whichofthefollowingisnottheworkinthephotographicindustry?Inprocessing,ifyouproduceaverygoodphotographofhi

Yourintelligencevariesfromseasontoseasonifyouarelikemostpeople.Youareprobablymuchsharperinthespringthanyou

A、Twoyears.B、Threeyears.C、Fouryears.D、Fiveyears.B数字判断题。对话中男士直接给出答案“I’veeverstayedinAmericaforthreeyears...”，因此答案选

A、Travelerandagent.B、Managerandworker.C、Shopassistantandcustomer.D、Classmates.AWhat’stheprobablerelationshipbetwe

HeshowedCarriearoundinhislaboratoryto(satisfaction)______hercuriosity.

Whentravelingoverseas,it’sagoodideatocarryanInternationalDrivingPermit,evenifyou’renotplanningtodrive.Valid

实践中，行政诉讼第三人主要有哪几种情形？

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对于上一年度抵销的内部应收账款计提的坏账准备的金额，在本年度编制合并抵销分录时，处理为()。

设抛物线y2=2x的焦点为F，过点M(√3，0)的直线与抛物线相交于A，B两点，与抛物线的准线相交于点C，|BF|=2，则△BCF与△ACF的面积之比=()

在ΔABC中，内角A、B、C的对边分别为a，b，c，且a＞c，已知=2，cosβ=，b=3，求：a和c的值；

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