题目内容
(请给出正确答案)
[单选题]
Pessimists warn us not () for pretty colors, since the car will come in gray.
A.ask
B.asking
C.to ask
D.to be asked
答案
查看答案
A.ask
B.asking
C.to ask
D.to be asked
第5题
当uS(t)为下列情况时,求题7-37图所示电路的响应uC:
(1)uS(t)=10Ɛ(t)V;
(2)uS(t)=10δ(t)V。
第7题
第8题
________________(她很可能已经知道了), and there is no need for us to keep the secret.
第9题
this class.
A) to change B) changing
C) changed D) change
第10题
A.Would
B.send us
C.which
D.were advertised
第11题
re deeply _______.
A) appreciated B) approved C) appealed D) applied