我国通常将商品分成()等。
A.大类
B.品目
C.品种
D.细目
参考答案:A, B, C, D
塑性变形后的金属加热时发生()变化。
A.结晶
B.再结晶
C.结晶后的长大
D.重结晶
Alibaba has become China’s largest online commercial company, _____ a profit of 1.47 billion yuan in 2010.
A.earns
B.earning
C.earned
D.to have earned