商业银行的资产是商业银行获得收入的唯一来源。
参考答案：错
涵洞工程施工时，涵身一般每隔（）设沉降缝一道。
A．2～4m
B．4～6m
C．6～8m
D．8～10m
There was no ______ that she was a good teacher.
A．reason
B．fact
C．doubt
D．wonder
