苯氯乙酮和亚当剂属于（）。
A.神经性毒剂
B.糜烂性毒剂
C.全身中毒剂
D.窒息性毒剂
E.刺激性毒剂
参考答案：E
I told my mother I wasn't worried about my exam. But in fact I ___________. [ ]
A. did
B. was
C. have
D. had
以下哪项不是公共场所的卫生特点（）
A.人群流动性大
B.用具易被污染
C.易传播传染病
D.易发生意外伤害
E.病人与非病人混杂
