传染病消毒的种类有（）
A.饮水消毒
B.疫源地消毒
C.食物消毒
D.预防性消毒
E.高水平消毒
参考答案：B, D
I’m sorry to hear that you failed your driving test. _____luck next time.
A．Good
B．Better
C．Best
D．The best
经行腹痛，痛连腰际病多在（）
A.肾
B.脾
C.肝
D.肺
E.心
