显影补充液的组成不包括（）
A.保护剂
B.促进剂
C.缓冲剂
D.坚膜剂
E.催化剂
参考答案：E
The stadium is so _____ that once it is begun, nothing can be changed. [ ]
A. planned
B. made
C. designed
D. produced
票据诈骗罪的惯用伎俩和手段主要有哪些？
