在（﹣1）3，（﹣1）2，﹣22，（﹣3）2，这四个数中，最大的数与最小的数的和等于[ ]
A．6
B．﹣5
C．8
D．5
答案：D
门静脉高压症合并食管静脉曲张破裂及肝功能Child C级者可表现为
A．脾功能亢进B．黄疸C．两者均有D．两者均无
— Why did the police ________ the crowd?
— Because the president's car _________ in the street. [ ]
A. break up,broke down
B. break down, broke down
C. break up, broke up
D. break down, broke up
