I won't see you off at the airport tomorrow, so I will wish you （）.

A．have a good journey now

B．a good journey now

C．would have a good journey now

D．to have a good journey now

一项病例对照研究的资料可整理成以下表格形式：

OR计算公式为（）。

A．A/(A+C)

B．A/C

C．A/N

D．C/B

E．AD/BC