工伤保险的特点
参考答案：
强制性；普遍性；福利性；补偿性；保障项目完备
I ______ an old letter while I was searching my drawer.
A．came up
B．came across
C．came on
D．came about
柜员接待客户前应（）.
A.举手招迎
B.座着迎候
C.站立迎客
D.随意迎候
