"用热远热，用寒远寒"所指的治疗原则是（）
A.因人制宦
B.因地制宜
C.因时制宜
D.标本同治
E.治标
参考答案：C
On hearing the news of the road accidents, his face ________ pale.
A．got
B．changed
C．went
D．appeared
