A
He has a bright idea.
Avery Hairston is lighting up people’s lives.The 15yearold from New York City created an organization called RelightNY.It helps people who have difficulty in paying their electricity bills by giving them special light bulbs(灯泡), which cut longterm electricity costs.They are also better for the environment than common bulbs.“People who can afford the bulbs, which are a bit expensive, should buy them，”Avery insists.
He is very interested in recycling(回收再利用)．
Eli Kahn, 15, started Cartridges for a Cure to raise money for children’s cancer(癌症) research by recycling empty ink cartridges(墨盒)．Eli has raised $82，000 for Johns Hopkins Children’s Center. “With a little time and work, anything can get bigger，” Eli says.
She makes water safe to drink.
Kelydra Welcker, 17, has been trying her best to make drinking water safer. She invented an easy way to get the chemical C8 out of her West Virginia town’s water supply(供应)．C8 went into the water from a nearby industrial factory. “Clean water should be given，” Kelydra explains. “We all should have it.”
She tries to stop deforestation.
Wangari Maathai, from Kenya, Africa, has been working for many years to save the forests. In 1977, she started a movement in Kenya to help stop deforestation (the cutting or burning down of all the trees). The program has planted more than 30 million trees in Africa. Her work brought her the Nobel Peace Prize in 2004. In 2006, she helped start the Billion Tree Campaign. The United Nations program encouraged people to plant trees in their neighborhood, with the goal of planting one billion trees worldwide that year. So many people who wanted to go green joined the program, and more than nine million trees have been planted.Maathai says, “This is something anybody can do.”
【解题导语】 本文是一篇应用文。文章介绍了四个致力于做慈善事业的人。
21．What can we learn about RelightNY?
A．It helps the poor save money.
B．It is a United Nations program.
C．It raises money for sick children.
D．It provides people with free bulbs.
A 解析：细节理解题。由He has a bright idea.部分的...an organization called RelightNY.It helps people who have difficulty in paying their electricity bills...cut longterm electricity costs 可知，该机构通过提供特殊灯泡帮助那些支付电费困难的人们节省电费。
22．Who won the Nobel Peace Prize in 2004?
A．Eli Kahn. B．Avery Hairston.
C．Kelydra Welcker. D．Wangari Maathai.
D 解析：细节理解题。由She tries to stop deforestation.部分的Wangari Maathai...Her work brought her the Nobel Peace Prize in 2004.可知答案。
23．What the four people have done is all good for ________．
A．the poor B．the sick
C．the education D．the environment
D 解析：推理判断题。从对这四个人的介绍内容better for the environment；recycling empty ink cartridges(墨盒); make drinking water safer和working for many years to save the forests可知，他们所做的事情都对环境有益。
