问题 单项选择题

某公司拟开发一项目,据预测,未来市场状况存在繁荣、一般、衰退三种可能性,概率分别为0.2、0.5和0.3,该项目在各种市场状态下的报酬率预计为50%、30%、-10%,该项目的期望报酬率为22%,标准离差为22.27%,则该项目的标准离差率为()。

A.12.12%

B.12.27%

C.98.79%

D.101.23%

答案

参考答案:D

解析:本题考查标准离差率的计算。标准离差率=标准离差/期望报酬率=22.27%/22%=101.23%。

单项选择题
阅读理解

阅读理解

     I am a good mother of three children.I have tried never to let my passion stand in the way of being a

good parent.

     I no longer consider myself the center of the universe.I show up.I listen.I try to laugh.I am a good

friend to my husband.I have tried to make marriage vows (誓言) mean what they say.I am a good friend

to my friends, and they to me.Without them, there would be nothing to say to you today.

    So here's what I want to tell you today:Get a life.A real life, not a desire of the next promotion (提升),

the bigger paycheck, the larger house.

     Get a life in which you are not alone.Find people you love, and who love you.And remember that love

is not leisure (休闲), it is work.Pick up the phone.Send an email.Write a letter.And realize that life is the

best thing and that you have no business taking it for granted.

     It is so easy to waste our lives, our days, our hours, and our minutes.It_is_so_easy_to_exist_instead_

of_to_live.I learnt to live many years ago.Something really, really bad happened to me, something that

changed my life in ways that, if I had my choice, it would never have been changed at all.And what I

learned from it is what, today, seems to be the hardest lesson of all.

     I learned to love the journey, not the destination.I learned to look at all the good in the world and try

to give some of it back because I believed in it, completely and totally.And I tried to do that, in part, by

telling others what I had learned.

     By telling them this:Read in the backyard with the sun on your face.Learn to be happy.And think of life as a deadly illness, because if you do, you will live it with joy and passion (激情) as it ought to be lived.

1. It can be inferred from the passage that________.

A. the author is a success in personal life

B. the author didn't try her best to work well

C. the author spent all her time caring for her children

D. the author likes traveling very much

2. How did the author form her view of life?

A. Through social experience.

B. By learning from her friends.

C. Through an unfortunate experience.

D. From her children and husband.

3. By the underlined sentence "It is so easy to exist instead of to live" in the fifth paragraph,

     the author really means that people tend to________.

A. make a living rather than live a real life

B. work rather than enjoy life

C. waste a lot in life

D. forget the most important lessons in life

4. What's the author's attitude toward work?

A. Do it well to serve others.

B. Earn enough money to make life better.

C. Try your best to get a higher position and a pay raise.

D. Don't let it affect your real life.