我国寒潮的中短期天气形势归纳为几种类型（）
A.1
B.2
C.3
D.4
参考答案：C
—I have some big news for you. You’ve been accepted as a member of our club.
—_______ That’s great!
A．Have I ?
B．Pardon?
C．Congratulations!
D．Good idea!
