钩体病的传播途径是（）
A.性传播
B.呼吸道黏膜传播
C.胎盘传播
D.哺乳传播
E.消化道黏膜传播
参考答案：A, B, C, D, E
Rh血型系统中抗原性最强的是（）
A.C
B.c
C.D
D.d
E.E
Could you tell me _______ ?
A．what the matter is with you
B．what was the matter with you
C．hat’s the matter with you
D．what’s the wrong with you .
