问题 单项选择题

某企业拟进行一项存在一定风险的完整工业项目投资,有甲、乙两个方案可供选择。已知甲方案净现值的期望值为1000万元,标准差为300万元;乙方案净现值的期望值为1200万元,标准差为330万元。下列结论中正确的是()。

A.甲方案优于乙方案

B.甲方案的风险大于乙方案

C.甲方案的风险小于乙方案

D.无法评价甲乙方案的风险大小

答案

参考答案:B

解析:因为期望值不同,衡量风险应该使用标准离差率。甲的标准离差率=300/1000=0.3,乙的标准离差率=330/1200=0.275,所以乙方案的风险较小。

问答题
完形填空

完形填空(共20小题;每小题1分,满分20分)

阅读下面短文,从短文后所给的四个选项A、B、C、D中,选出可以填人空白处的最佳答案,并在答题卡上将该项涂黑。

There are reasons why a middle-aged woman who has been away from the work for her children’s sake decides to go back to work. The  16 reason for me was: years ago my job was that of a bookkeeper(会计)----- it was then that I worked for  17  , and now with my children working, I wanted to do something  18  , something new and exciting.

Money wasn’t too important now, as my husband made a very  19  living for us. But what should I do? What sort of   20  should I look for? I knew I needed to be  21  as to what I became involved with. I am not a "quitter"(容易放弃的人) and so I hoped to  22  becoming responsible to an employer in a job that might turn out to be a mistake for me.

While I made painful efforts thinking over what to do, I was  23  of a past incident where I needed to replace my original engagement ring  24  the gold was wearing thin. My husband and I shopped and shopped for one,  25 we went, even when we were on vacation.  26  this nonstop searching got my poor  27  to ask, "Just what kind of ring do you want, what exactly are we looking for?" My reply was, "I honestly don’t  28, but when I see the correct setting, I will know it." That was the  29  I felt about the new career I wished to start; I didn’t have an exact idea as to what I wanted to do, but knew there was a perfect fit for me, if I would  30  be patient.

Fortunately, that summer while I  31  my twenty-fifth high school class reunion(重聚), I heard a former classmate  32  what she did for a living. She was a travel agent, and she and her husband had just  33 from a trip to Hawaii where they acted as guides for a group of travelers. WOW, that  34  like fun, considerably more fun and exciting than being a  35  : I know what to take up!

16. A. possible                  B. obvious             C. believable              D. good

17. A. money                B. fun                   C. children                   D. employers

18. A. valuable              B. reasonable         C. worthy                     D. different

19. A. interesting           B. comfortable              C. successful             D. meaningful

20. A. pleasure                     B. place                 C. job                     D. man

21. A. careful                B. useful           C. joyful                 D. painful

22. A. finish                 B. miss                  C. avoid                       D. forget

23. A. recalled                     B. reminded           C. warned                    D. robbed

24. A. where                 B. while                C. if                D. as

25. A. nowhere             B. somewhere        C. wherever                  D. everywhere

26. A. Actually              B. However           C. Finally                     D. Once

27. A. children                     B. classmates         C. employer                  D. husband

28. A. care                    B. know                C. understand            D. find

29. A. way                    B. time                  C. style                        D. thought

30. A. really                 B. ever                  C. just                          D. certainly

31. A. joined                 B. left                   C. started                  D. attended

32. A. complaining        B. explaining         C. describing            D. considering

33. A. returned                     B. rested                C. came                        D. stayed

34. A. looked                B. seemed              C. sounded                   D. felt

35. A. travler                B. wife                  C. employer                  D. bookkeeper