手工喷涂时的喷涂距离为（）厘米。
A.10~15
B.15~20
C.5~25
D.25~30
参考答案：C
35是7的______倍；8的7倍是______；20的______倍是80．
I ______ believe it _______ I see it with my own eyes. [ ]
A. won't; and
B. will; but
C. will; until
D. won't; until
