规范上规定的测风仪器有（）种。
A.4
B.5
C.6
D.7
参考答案：C
照片:留念
A.文件:机密
B.古董:珍藏
C.日记:记载
D.书籍:查阅
---Because of the rain, we’ll have to _______ the football match.
---I’m free next Sunday if you would like to play then. [ ]
A. advance
B. postpone
C. abandon
D. advocate
