题目内容

78、差动放大电路能放大( )。

A. 直流信号
B. 交流信号
C. 共模信号
D. 差模信号

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Mary is _______ than Alice.

A. More experienced a teacher.
B. A more experienced teacher
C. More an experienced teacher
D. More experienced teacher.

I put him down for a well-educated man.- _________- I mean that he’s a well-educated man.

A. I beg your pardon
B. Speak louder, will you
C. What’s that
D. Will you repeat word for word.

He ____ he would be able to leave tomorrow, but it’s beginning to took difficult.

A. Hopes
B. Was hoping
C. Had hoped
D. Hoped

_____ she was invited to the ball made her very happy.

A. If
B. That
C. When
D. Because

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