《政府采购货物和服务招标投标管理办法》规定，招标采购单位应当在( )后5个工作日内退

—Can I look at the menu for a few more minutes before I decide?

—Of course.________,  sir.[ ]

A. Make yourself at home  

B. Enjoy yourself

C. It doesn't matter  

D. Take your time

—Mr Wang was caught in a snowstorm yesterday.

—I have known that，and_______his new car was completely 　destroyed.

A．hopefully

B．fortunately

C．thankfully

D．unfortunately

周护士值班时遇见一位子痫患者，按医嘱进行药物准备，她在下列药物中首先选择（）。

A.冬眠1号

B.硫酸镁

C.肼屈嗪

D.20%甘露醇

E.氢氯噻嗪

市场营销的三大要素：（）+购买力+欲望。

对于投资连结保险的投资账户来说，（）拥有该账户的投资权。

A、保险公司

B、被保险人

C、投保人

D、第三人