问题 单项选择题

某一给定的风险投资的要求回报率与具有相同预期收益的无风险投资的要求回报率的差值是()。

A.风险溢价

B.方差的相关系数

C.计量的标准误差

D.贝塔系数

答案

参考答案:A

解析:

 风险溢价是由风险增加而导致的预期回报的增加。选项(b)不正确,因为方差的相关系数代表了一项投资回报的标准差除以均值。选项(c)不正确,因为计量的标准误差代表了衡量投资回报变动的方法。选项(d)不正确,因为贝塔系数代表了投资回报对市场回报的敏感性。

阅读理解

阅读理解.

     When I was an education official in Palo Alto,California,Polly Tyner,the president of

our school board,wrote a letter that was printed in the Palo Alto Times.Polly's son,Jim,

had great difficulty in school.He was classified as educationally disabled and required a

great deal of patience on the part of his parents and teachers.But Jim was a happy kid

with a great smile that lit up the room.His parents acknowledged his academic difficulties,

but always tried to help him see his strengths so that he could walk with pride.Shortly after

Jim finished high school,he was killed in a motorcycle accident.After his death,his mother

submitted this letter to the newspaper.

                                                                          

     Today we buried our 20-year-old son.He was killed instantly in a motorcycle

accident on Friday night.How I wish I had known when I talked to him last that it would be

the last time.If I had only known I would have said,"Jim,I love you and I'm very proud of you."

     I would have taken the time to count the many blessings he brought to the lives of the

many who loved him.I would have taken time to appreciate his beautiful smile,the sound

of his laughter,his genuine love of people.

     When you put all the good qualities on the scale and you try to balance all the irritating

phenomena such as the radio which was always too loud,the haircut that wasn't to our liking,

the dirty socks under the bed,etc.,your angry feelings won't amount to much.

     I won't get another chance to tell my son all I would have wanted him to hear,but,other

parents,you do have a chance.Tell your young people what you would want them to hear

if you knew it would be your last conversation.The last time I talked to Jim was the day he

died.He called me to say,"Hi,Mom! I just called to say I love you.Got to go to work.Bye."

He gave me something to treasure forever.

     If there is any purpose at all to Jim's death,maybe it is to make others appreciate more

of life and to have people,especially families,take the time to let each other know just how

much we care.

     You may never have another chance.

1. According to the passage,we know that________.

A.Jim kept to himself

B.Jim did very well in his studies

C.Jim's parents were patient with him

D.Jim failed to finish his high school

2. Which of the following is NOT mentioned in the passage?_____

A.Many people in the school loved him.

B.Jim's smile cheered up his family.

C.Jim was killed in a motorcycle accident at the age of 20.

D.Jim wanted to be a motorcyclist after his graduation.

3. The underlined word "irritating" in Paragraph 4 means__________.

A.annoying

B.aggressive

C.impatient

D.thrilling

4. By writing the letter printed in the Palo Alto Times,the author intends to________.

A.mourn her son's sudden death in a traffic accident

B.remind people to be cautious of motorcycles

C.suggest people taking the chance to express their love in time

D.appreciate more of life than ever before

5. Which of the following can be the best title of the passage?_____

A.Love Your Family

B.Do It Today

C.Walk with Pride

D.AppreciateSmiles

单项选择题