滴虫 * * 炎的传染方式不正确的是（）.
A.公共浴池传播
B.性交传播
C.垂直传播
D.医源性感染
E.坐式便器传播
参考答案：C
The film My Own Swordsman kept us ______ all the time.
A．laugh
B．laughed
C．laughing
D．to laugh
________our manager objects to Tom's joining the club，we shall accept him as a member.
A．Until
B．Unless
C．If
D．After
