问题 单项选择题

假定基金在未来5年内将取得平均每年10%的收益率,无风险收益率保持3%不变。那么,为了取得8%的平均收益率,投资于基金的比例y为( ):

A.(A) 31.55%

B.(B) 28.57%

C.(C) 71.43%

D.(D) 68.45%

答案

参考答案:C

解析: 8%=y×10%+(1-y)×3%,可以得到:y=71.43%,1-y=28.57%。

判断题
阅读理解

阅读理解。

                                               

                                      Live Earth Announces 2010 Global Event!

     This is the web version of the October 15, 2009 Live Earth email to members. Click here to join and receive

bi-weekly updates from Live Earth.

     Live Earth is pleased to announce the largest worldwide water initiative (倡议) in history to help fight the

global water crisis. The Dow Live Earth Run for Water-to take place on April 18, 2010-will consist of a series

of 6 km run/walks (the average distance many women and children walk every day to get water) taking place

over the course of 24 hours in countries around the world, featuring concerts and water education activities,

raising awareness and funds to help solve the water crisis. Jessica Biel, Alexandra Cousteau, Pete Wentz,

Angelique Kidjo and Jenny Fletcher will lend their names and their time in support of this global event.

     Water shortage is a major issue affecting countries, communities and families all over the world. One in

eight people doesn't have access to safe, clean drinking water. Communities in Africa, Latin America and Asia

suffer l. 8 million deaths every year from diarrheal (腹泻) diseases and the death of 5000 children each day

due to inadequate water infrastructure (基础设施). In these areas, women and children are forced to walk 6

km (3.7 miles) each day to get water that is likely unsuitable for drinking. However, the water crisis is not only

limited to developing nations. Adding to these existing issues, the effects of climate change are increasingly

impacting both supply and quality of available fresh water throughout the world.

     In 60% of European cities with populations greater than 100 000, groundwater is being used faster than it

can be replenished (补充). By 2025, two-thirds of the world's population could be living under water-stressed

conditions.

     You can help solve the water crisis by participating in the April 18th event Run/walk registration is now

officially open! Sign up now at http://liveearth.org/run.

     Thanks and be sure to visit liveearth org for the latest on The Dow Live Earth Run for Water, conservation

tips, and more!

                      

1. Which of the following activities will the Dow Live Earth organize on April 18, 2010? [ ]

A. Receiving the latest news from Live Earth.

B. Putting on musical performances.

C. Calling on pop stars to walk 6 km to get water.

D. Lending names and time to support the event.

2. According to the passage, which of the statements is true? [ ]

A. You can turn to http://liveearth.org for water protection tips.

B. Jessica Biel can't take part in the cvent even if she signs tjp.

C. The information on Live Earth is updated every month.

D. Every year l.8 million people in the world die from the discase related to dirty water.

3. We can learn from the passage that _____. [ ]

A. by 2010, two-thirds of the world's population will be short of water

B. we can solve the water crisis by taking part in the April 18th event

C. seven-eighths of the people in Asia can have access to safe, clean drinking water

D. there are different channels for people to get access to Live Earth