根据有关规定，在距离高压电器()m处连续噪声水平不应大于()dB。
A．2.5,60
B．2.0,85
C．1.5,100
D．3.0,75
参考答案：B
—Didn't you finish your homework last night?
—_______, though I wasn't feeling well.[ ]
A. No, I hadn't
B. Yes, I had
C. No, I didn't
D. Yes, I did
什么是主题法？
