To be qualified for the job , _________

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问题选择题

A．ir is required that one has profound knowledge

B．profound knowledge is important

C．profound knowledge is a must

D．one needs to have profound knowledge

答案

答案：D

单项选择题

He seemed to be unaware（）the trouble he was causing.

A.for

B.on

C.of

D.about

单项选择题

从所给的四个选项中，选择最合适的一个填入问号处，使之呈现一定的规律性：（）

A.A

B.B

C.C

D.D