温带气旋（）
A.频繁产生和活动于温带地区
B.是经常影响中高纬大洋航线天气的主要风暴系统
C.A和B都对
D.A和B都错
参考答案：C
在市场分割理论下，利率期限结构取决于短期资金市场供求状况与长期资金市场供求状况的比较。（）
He still remembers when he was a little boy, he used to go there and watch ______. [ ]
A. to repair trucks
B. trucks to repair
C. trucks being repaired
D. trucks repairing
