运输构件的搁置点，一般等截面构件在长度（）处。
A.1/6
B.1/5
C.1/4
D.1/3
参考答案：B
两个数相除的商是18，被除数就是除数的（ ）
A．10倍
B．18倍
C．20倍
D．1.8倍
The Great Wall_ ___ by the Chinese people thousands of years ago. [ ]
A. built
B. was built
C. were built
