阅读理解

阅读下面短文，从每小题的4个选项中选出最佳答案。

　　Daniel Williams became a doctor in Chicago in 1882. After graduation, he taught at North-West University's medical school. He was asked by the president (总统) of the United States, Grover Cleverland, to go to Washington D. C. to head the Freeman's Hospital. It was one of the few hospitals for blacks in the country.

　　He went back to Chicago to help set up Provident Hospital before it opened, Chicago's black doctors could not practise patients. Doctor Williams also helped to set up a training school in Chicago for black nurses.

　　In 1893 he operated on a man who was dying from a wound in the heart. Such a wound had always meant death. Without X-ray he opened the man's chest (胸) and saved his heart and the man remained alive for quite a long time.

1．According to the passage, he helped set up ________.

[　　]

A．Freeman's Hospital in Washington D. C.

B．Provident Hospital in Washington D. C.

C．a training school for black nurses

D．North-West University

2．The hospital he helped set up was greatly needed because ________.

[　　]

A．there were no doctors for blacks at that time

B．blacks got poor treatments in other hospital

C．black doctors had to treat patients at home

D．black doctors needed a hospital in which to train nurses

3．In the famous operation Dr. Williams ________.

[　　]

A．mended the patient's heart

B．changed the patient's heart

C．cut open that man's chest

D．mended the man's heart

4．The writer of this passage told us that a wound in one's heart was sure to die ________.

[　　]

A．by the end of the nineteenth century

B．after 1891

C．by the end of the eighteenth century

D．without X-ray

Jeff Keith has only one leg．When he was 12 years old，Jeff had cancer．Doctors had to __1__ most of is right leg．Every day Jeff puts on a plastic leg．With the plastic leg，Jell can ski，ride a bicycle，swim，and play soccer．He can also run．

Jeff made a plan with his friends who have plastic legs，too．They decided to run across America．__2_ twenty-two，Jeff Keith ran across the USA from the east to the west．He ran 3200 miles．Jeff __3_ thirty-six pairs of running shoes and five plastic legs． He stopped in different cities on the way to Los Angeles．In every city people gave Jeff money for the American Cancer Society．The American Cancer Society used the money to know more about cancer．

On the way to Los Angeles，Jeff talked to people about __4__．Jeff is disabled，but he can do many things．He finished college and is studying to be a lawyer．Jeff says，“People can do anything they want to do．I want people to know that．I ran __5__ for disabled people．I ran for everybody．”

1．A．take off                 B．put off                 C．cut off

2．A．At the end of                 B．At the age of        C．By the end of

3．A．wore out               B．wore                   C．broke

4．A．Los Angeles           B．cancer                 C．legs

5．A．not only                 B．only                     C．no longer

阅读下面的短文．并根据短文后的要求答题。
Since 1850．the temperature of Earth’s surface has increased about 0.6°C．Scientists predict it may warm much more by the end of this century．Who’s turning up the heat? Well, it seems that we are! Some of this global warming may be natural．However，nearly all scientists now agree that most of it is due to peoples actions．Over the past 150 years, we've added huge amounts of certain gases, especially carbon dioxide（CO2）to the air．These gases can keep heat near Earth's surface，so more carbon dioxide means more heat is kept near Earth's surface．Global warming may change the weather in ways that lead to more severe storms，floods and droughts．
We add carbon dioxide to the air when we burn things, especially fossil fuels．Fossil fuels are energy sources formed from the remains of plants and animals that lived millions of years ago．Coal，oil，and natural gas are all fossil fuels．People in the United States and other countries started bunting large amounts of fossil fuels more than a century ago．The amount d fossil fuels being burned each year has been increasing worldwide．The more we burn，_____________________．
What can we do to help? Nowadays to live a low-carbon life is quite popular in the world． Low-carbon means to reduce the amount of carbon dioxide．Saving energy and reusing are the key words. In fact, even the simplest everyday activities can make our lives low-carbon．
1．What problem can global warming cause?（根据短文内容回答问题）
2．What are fossil fuels?（同上）
3．请将第一段中的划线句子翻译成汉语。
4．请根据第二段内容，将最后一个句子补充完整。
The more we bum，_____________________________________________.
5．请写出日常生活中的一种“低碳”行为（用英语写一个句子）。