沟通的方法一般有( )。
A．倾听
B．猜测
C．表示同情
D．解决问题
E．跟踪
参考答案：A,C,D,E
The police asked him to _______ the facts just as he remembered them.
A. set about B. set down C. set up D set out
在“职称”表中删除“津贴”字段的有效性规则命令为： ALTER TABLE职称ALTER津贴______
