现金日记账必须( )结计出余额。
A．每日
B．每周
C．每旬
D．每月
参考答案：A
在金属结构安装工程质量评定中，单元工程的检查项目分为（）。
A、重点项目
B、主要项目
C、一般项目
Our math teacher ______ in our school for 20 years and he ______ here when he was 23 years old. [ ]
A. has taught, has come
B. taught, comes
C. taught, came
D. has taught, came
