多少支香烟的毒素可以杀死一头牛。()
A、10支
B、20支
C、30支
参考答案:B
把多项式6a3﹣54a分解因式的结果为 .
It was from only a few supplies that she had brought in the village _____ the hostess cooked such a
nice dinner. [ ]
A. where
B. when
C. that
D. which