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

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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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本试题收录于：大学英语三级B级题库大学英语三级分类

大学英语三级B级

大学英语三级

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

大学英语三级B级

大学英语三级

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DearMs.Emily,TheneedforabiologyteacherintheHeavilonCommunitySchoolswasindicatedinthePurdueUniversityEduc

A—officepinB—officeclockC—penholderD—notepaperE—globeF—staplerG—memoholderH—paperfastenerI—tapedispenserJ—letter

Businessmemoisfrequentlyusedincompanies.Itiscalledanintra-companycommunicationbecauseitisusedbypeopleintheir

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