蒙古族的服饰主要有（）。
A.首饰
B.长袍
C.腰带
D.靴子
E.帽子
参考答案：A, B, C, D
— I think you'd better type this letter again before Mr. Smith see it.
— Oh, dear! _____ [ ]
A. Who cares?
B. No problem
C. I don't mind at all
D. Is it as bad as that?
农业科学技术的作用
