冲裁模凸模易折断的主要原因是（）
A.侧向力未抵销
B.托料板倾斜
C.凸模强度不够
D.卸料板倾斜
参考答案：A, B, C, D
-How was the debate last night?
-Super! Rarely ___________so much media attention. [ ]
A. a debate attracted
B. did a debate attract
C. a debate did attract
D. attracted a debate
功用和主治与大补阴丸最接近的方剂是（）
A.知柏地黄丸
B.一贯煎
C.六味地黄丸
D.大补阴丸
E.左归丸
