《一笔好交易》中()使公主开心大笑?
A、农夫
B、国王
C、士兵
参考答案:A
______ has been announced, we shall have the singing competition next month.
A.That
B.As
C.It
D.What
半导体硅常用的施主杂质是()。
A.锡
B.硫
C.硼
D.磷