下列选项中，( )不属于工程招标投标的主要工作。
A．签订合同
B．编制招标文件
C．评标
D．催交
参考答案：D
In the lecture, little Tom kept silent all the time unless _________ to express his opinion.
A．he invited
B．he is invited
C．invited
D．being invited
用SQL语句实现将“职工”表中所有职工的奖金提高5%： UPDATE职工______奖金=奖金*1.05
