随从工作环境复杂．当遇到突发事件时，秘书应（）.
A、首先报告领导
B、建议领导决断处理
C、首先弄清情况
D、首先表达自己的看法
参考答案：C
I shall never forget those days ______ I spent with the earthquake victims(受害者), _____ has a great effect on my life.
A．that; which
B．when; that
C．which; that
D．when; who
代表社区牙周指数的是（）
A.CPI
B.CPrTN
C.CPD
D.OHI
E.DI
