选择题：Not until I began to workhow much time I had waste

题目内容：

Not until I began to work
how much time I had wasted.
A.didn.t I realize
B. did I realize
C. I didn.t realize
D.I realized

参考答案：

[填空题,5.8分] 采用四位比较器对两个四位数比较时，先比较（）位

分类：专升本英语题型：选择题

[填空题,10分] 对于JK触发器，若KJJ，则可完成T触发器的逻辑功能；若KJJ，则可完成（）触发器的逻辑功能

分类：专升本英语题型：选择题

My secretary usually opens my postA.forB.asC.unlessD.if

分类：专升本英语题型：选择题

3线—8线译码器74HC138，当片选信号S1S2′S3′为（）时，芯片被选通A.10B.100C.1D.101

分类：专升本英语题型：选择题

The factoryI visited last year was not the oneI once worked.A.which,whichB.what,

分类：专升本英语题型：选择题