如果点P（﹣3，k）在直线y﹦2x+2上，那么点P到x轴的距离是 [ ]
A．﹣4
B．4
C．±4
D．3
答案：B
–- Excuse me, would you mind answering a few questions?
--- Well, I don’t know. I’m in a hurry _______.
A．actually
B．seriously
C．immediately
D．anxiously
在临床上，皮疹泛发是指皮损面积大于体表面积的：
A．40%
B．50%
C．60%
D．70%
E．80%
