trust，to have fun with，to talk and go to when needed.
A Big Sister and Little Sister will generally spend between one and four hours together three or four times each month for at least twelve months.They enjoy simple activities such as a picnic at a park，cooking，playing sport or going to a football match.These activities improve the friendship and help the young person develop positive self-respect，confidence and life direction.
Big Brothers Big Sisters organizations exist throughout the world.It is the largest and most well-known provider of tutor services internationally and has been operating for 25 years.
Emily and Sarah have been matched since March 2008.Emily is a 10-year-old girl who has experienced some difficulties being accepted by her schoolmates at school.“I was pretty sure there was something wrong with me.”
Emily's mum came across Big Brothers Big Sisters and thought it would be of benefit to Emily by “providing different feedback(反馈)about herself other than just relying on schoolmates to measure her self-worth.”
Sarah wanted to get involved in a volunteer program.“I google it and found out how to be a part of it.I thought it would be fun for me to get involved in making time to do something because sometimes it's all work and no play.”
Big Brothers Big Sisters has been of great benefit and enjoyment to both Emily and Sarah.They love and look forward to their time together and the partnership has certainly helped Emily be more comfortable in being the wonderful，happy and unique girl she is!
6．What is the aim of Big Brothers Big Sisters? A．To offer students public services. B．To help students improve their grades. C．To organize sport activities for young people. D．To provide partnership and fun for young people.
解析：事实细节题。根据文章第一段“It is a program which provides friendship and fun by matching...”可知选D。
答案：D
7．A volunteer is usually expected to work within a year for at least________．
A．24 hours B．36 hours C．48 hours D．72 hours
解析：数据计算题。根据第三段“spend between one and four hours together three or four times each month for at least twelve
months.”12个月里每个月至少3次，每次至少1小时。
答案：B
8．According to Emily's mother，this program may provide Emily with________．
A．advice from her teachers B．a new way to assess herself C．a new way to judge her schoolmates D．more comments from her schoolmates
解析：事实细节题。根据倒数第三段“providing different feedback(反馈)about herself”可知选B。
答案：B
9．Why did Sarah want to get involved in the program? A．She used to be a volunteer. B．She needed a part-time job. C．She felt a bit bored with her life. D．She wanted to get a challenging job.
解析：事实细节题。根据倒数第二段最后一句“I thought it would be fun for me to get involved in making time to do something because
sometimes it's all work and no play.”可知选C。
答案：C
10．According to the passage，“vulnerable young people” are probably those who are________．
A．popular at school B．rather weak physically C．easily hurt emotionally D．confident in themselves
解析：推理判断题。通过参加此类活动的Emily可知，他们都是在生活中存在某些问题的年轻人，故选C。
答案：C
C
Scientists today are making greater effort to study ocean currents(洋流)．Most do it using satellites and other high-tech equipment.However，ocean expert Curtis Ebbesmeyer does it in a special way — by studying movements of random floating garbage.A scientist with many years' experience，he started this type of research in the early 1990s when he heard about hundreds of athletic shoes washing up on the shores of the northwest coast of
the United States.There were so many shoes that people were setting up swap_meets to try and match left and right shoes to sell or wear. Ebbesmeyer found out in his researches that the shoes — about 60，000 in total — fell into the ocean in a shipping accident.He phoned the shoe company and asked if they wanted the shoes back.As expected，the company told him that they didn't.Ebbesmeyer realized this could be a great experiment，if he learned when and where the shoes went into the water and tracked where they landed，he could learn a lot about the patterns of ocean currents.
The Pacific Northwest is one of the world's best areas for beachcombing(海滩搜寻) because winds and currents join here，and as a result，there is a group of serious beachcombers in the area.Ebbesmeyer got to know a lot of them and asked for their help in collecting information about where the shoes landed.In a year he collected reliable information on 1，600 shoes.With this data，he and a colleague were able to test and improve a computer program designed to model ocean currents，and publish the findings of their study.
As the result of his work，Ebbesmeyer has become known as the scientist to call with questions about any unusual objects found floating in the ocean.He has even started an association of beachcombers and ocean experts，with 500 subscribers from West
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