常用的说明性条据有请假条和（）。
A.收条
B.留言条
C.借条
D.欠条
参考答案：B
Measures _______ to raise the employees’ salaries if the prices are rising all the time.
A．had been taken
B．have been taken
C．will be taken
D．were taken
金盾工程的启动时间是（）年。
A.1998
B.1999
C.2000
D.2001
