下述哪项与银屑病发病无关（）
A.外伤
B.应激事件
C.肥胖
D.感染
E.妊娠
参考答案：C
8007中的“8”表示[ ]
A.8个一
B.8个十
C.8个百
D.8个千
—I was ill and I didn't go to school the day before yesterday.
—______ [ ]
A. Don't worry.
B. I'm very sorry to hear that.
C. It doesn't matter.
