心脏听诊发现大炮音，一般考虑（）
A.室性心动过速
B.心房颤动
C.三度房室传导阻滞
D.阵发性室上性心动过速
E.期前收缩
参考答案：C
- What have you done with your arm?
- A little boy ________ my bike and knocked me off it. [ ]
A. knocked into
B. came into
C. got into
D. broke into
为非均相固-液分散系统，毒性或小剂量药物不宜采用的是（）
A.溶液剂
B.高分子溶液
C.溶胶
D.乳浊液
E.混悬液
