盘柜上的小母线应采用直径不小于（）mm的铜棒或铜管。
A.5
B.6
C.8
D.10
参考答案：B
A. the; a B. a; the C. a; a D. the; the
When we were young, every evening we ____ stay at home waiting for our mother. [ ]
A. would
B. might
C. should
D. could
