Our two senior programmers________each other ever since they were at college.A、k

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问题 Our two senior programmers________each other ever since they were at college.

选项 A、know
B、knew
C、have known
D、are knowing

答案 C

解析本题考查动词的时态。当ever since引导时间状语从句时，主句一般使用现在完成时，从句用一般过去时。两个程序员从大学起就认识，一直持续到现在，故用现在完成时，因此确定本题答案为C。know是一般现在时，knew是一般过去时，are knowing是现在进行时，这三种时态都不符合语法要求，均可以排除。

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Our two senior programmers________each other ever since they were at college.A、k

Ourtwoseniorprogrammers________eachothereversincetheywereatcollege.A、k

Whataretheresponsibilitiesoftheseniorexecutivesinacompany?Theyestabl

Itishighlydesirablethatanewpresident______forthiscollege.A、isappoint

Aseriesofculturalprogrammers(hold)______inShanghaitocelebratethislarge

Thismedicinemustbe______withfoodormilk.A、takeB、takenC、takesD、takingB空格

Ireceivedthenews______Xiaopinghadpassedaway.A、whatB、thatC、whichD、inwhi

DOGGEREL:POET::A、symphony:composerB、easel:painterC、caption:cartoonist

Toomuchtimeinthesunmaybeespeciallyharmfulforbaby,accordingtoa

[originaltext]W:Ihaveheardthatyourrateshavegoneuponallpostalitems.

A.1/3 B.1/2 C.2/3 D.1

按主编单位和管理权限分类，可以把工程定额分为（）。A.补充定额 B.行业统一定

以下不属于牙源性Ⅱ类错的表现的是A.∠ANB正常 B.上前牙唇倾，下前牙舌倾

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