在船上常用的表面探伤方法是（）。
A．煤油-白粉法
B．着色探伤
C．荧光探伤
D．磁粉探伤
参考答案：B
— Do you ask why I am learning English?
— Yes, I mean, what are you going to do with it? Are you going to be a teacher of English
or something like ?[ ]
A. it
B. him
C. that
D. such
香附挥发油具有（）激素样作用．
