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
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A.ask
B.asking
C.to ask
D.to be asked
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。
________________(她很可能已经知道了), and there is no need for us to keep the secret.
this class.
A) to change B) changing
C) changed D) change
A.Would
B.send us
C.which
D.were advertised
re deeply _______.
A) appreciated B) approved C) appealed D) applied