______ those troublesome messages, you’d better not give out your number to anyone whom you don’t know.

A．Avoiding

B．Avoided

C．Having avoided

D．To avoid

治疗要获得病人的知情同意，其道德价值应除外

A．维持社会公正

B．保护患者自主权

C．解脱医生责任

D．协调医患关系

E．保证医疗质量