Computersin offices and homes since 1970s.A.have been usedB.had been used C.was D.has been used-高一英语

题目简介

Computersin offices and homes since 1970s.A.have been usedB.had been used C.was D.has been used-高一英语

题目详情

Computers          in offices and homes since 1970s.
A.have been usedB.had been used C.was D.has been used
题型:单选题难度:中档来源:不详

答案

A

试题分析:句意:自从20世纪70年代开始,电脑被用在办公室和家里。因为与since连用时,前面的常用现在完成时,又因为Computers是复数,故选A。
点评:本题难度适中。对动词的考查是高考必考的内容,需要掌握它们的词义、用法、时态及语态等,对它们的考查在单选、完形及短文改错中经常出现,足以引起考生的重视。
即学即练:--- I hear you _______ at Smith’s.
--- Yes, I________there for about three months.
A.work; had been working 
B.worked; was working
C.are working; have been working 
D.worked; have worked
解析:C。句意::--我听说你在史密斯那里工作。--是的,我一直在那里工作了3个月。根据句意选C。

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