根据人们对产品的了解、态度、使用状况或反映,将购买者划分为()
A.相同群
B.不同群
C.同质群
D.相似群
参考答案:C
The teacher knows that you are always the first ________ to the classroom since last september.
A.coming
B.to come
C.came
D.has come
直达和中转货物拼配时,对直达货物一般不要甩退。( )