不同商店销售不同商品，商店与商品的关系是（）
A.1：1
B.1：n
C.n：1
D.m：n
参考答案：D
When I was young, I ______ get up at 5 and go for a long tiring walk to school after breakfast. [ ]
A. would
B. would like to
C. was used to
D. might
跨越采煤工作面转载机时，必须怎样做？
