AIDS的传播方式有（）
A.注射传播
B.母婴垂直传播
C.器官移植
D.与患者同进食
E.输血液制品
参考答案：A, B, C, E
Generally speaking, that city is ___ crowded than ___ in the same area.
A．less, the others
B．less, others
C．more, another
D．more, some other
文明待客要做到哪“三不”、“三指”、“三声”？
