构成细菌毒力的是（）
A.基本结构
B.侵袭力和毒素
C.特殊结构
D.分解代谢产物
E.侵入机体的途径
参考答案：B
Mark was a student at this university from 1999 to 2003,______he studied very hard and was made
Chairman of the Students' Union. [ ]
A. during which time
B. for which time
C. during whose time
D. by that time
护士在与患者沟通时所采取的促进有效沟通的行为不包括
A．及时反馈B．观察患者反应C．及时更正患者不正确的观念D．环境舒适，注意保护患者隐私E．病人担心疾病预后时可做出保证
