构成细菌毒力的物质是（）
A.基本结构
B.特殊结构
C.侵袭力和毒素
D.解代谢产物
E.侵入机体的途径
参考答案：C
_________, he could continue working in this company now. [ ]
A. Had he not lied to the boss
B. Did he not lie to the boss
C. If he has not lied to the boss
D. If he didn't lie to the boss
脊髓损伤的ASIA分级（）
A.分为A、B、C、D共四级
B.分为A、B、C、D、E共五级
C.分为1、2、3、4共四级
D.分为1、2、3、4、5共五极
E.分为甲、乙、丙、丁共四级
