眩光效应与（）成正比。
A.光的波长
B.周围环境亮度
C.光源的亮度及面积
D.光源的位置
参考答案：C
I see you got a “D” in biology. _______ ?
—Well. I found that subject hard. I think I will drop it for history.
A．How about that
B．What for
C．How come
D．What’s your next plan
