和谐医患关系的根本是（）
A、信任
B、责任心
C、理解
D、宽容
参考答案：A
—Anna, can you come to play volleyball?
—________. I have to finish my work first. [ ]
A. Thanks
B. Sorry, I'm afraid I can't
C. Sure
D. OK
护照分为哪几种？
