閱讀理解
     Each year, road accidents kill a million people and injure millions more.The economic costs are
greatest for developing countries.Earlier this year, the United Nations called for a campaign to improve
road safety.
     One way to avoid accidents is better driving.Another is better roads and bridges.Engineers in the
United States have designed ten new concrete mixtures that they think could make bridges last longer.
     Professor Paul Tikalsky leads the experiments by a team at Pennsylvania State University.He says
bridges made of concrete now last about twenty－five to thirty－five years.But he says the new mixtures might extend that to seventy－five or even one－h(huán)undred years.
     Concrete is made of stone, sand, water and cement (水泥). The materials in the cement hold the
concrete together.Ancient Romans built with concrete.Yet strengthened concrete bridges did not appear
until the late 1800s.People keep looking for new ways to improve concrete.Professor Tikalsky says it is
one of the most complex of all chemical systems.
     The new mixtures designed by his team contain industrial waste products.He says these make the
concrete better able to resist damage from water and salt over time.One of the products is fly ash.This is
released into the air as pollution when coal is burned.
     Professor Tikalsky says particles (顆粒) of fly ash are almost exactly the same size and chemical
structure as Portland cement.This is the most costly material in concrete.So using fly ash to replace some
of it would save money.
     Over the next two years, engineers will study ten bridges in Pennsylvania.These were built from the
different cement mixtures designed by Professor Tikalsky's team.He says longer－lasting bridges could
save the state more than 35 million dollars a year.And he says the materials would be environmentally
friendly.
     The federal government is paying for part of the research.Engineers anywhere can use the technology.
Professor Tikalsky says some of the ideas have already been put to use in China, the Philippines and
other countries.
1. Why did the United Nations launch the campaign?
A. Because the United Nations wanted to reduce road accidents and economic costs.
B. Because two million people were killed in the accidents.
C. Because engineers wanted to design ten new concrete mixtures.
D. Because the United Nations made bridges of the new mixtures which could last for about
     20 to 35 years.
2. What does the underlined word "This" in the sixth paragraph refer to?
A. Fly ash.  
B. Portland cement.
C. Sand.  
D. Chemical.
3. Which of the following statements is TRUE?
A. Ten new concrete bridges have already been built in the United States.
B. A new concrete bridge could last 50 more years than an ordinary concrete one.
C. People didn't know how to build with cement until the late 1800s.
D. Water and salt won't do any damage to bridges over time.
4. What can we conclude from the passage?
A. Engineers have to pay a lot of money to use the new bridge technology.
B. Pennsylvania State University is paying all the money for the research.
C. Bridges built with fly ash are cheaper than common bridges.
D. Fly ash is much more expensive than Portland cement.
5. What does the passage mainly tell us?
A. The causes of road accidents.
B. The advantages of fly ash.
C. The measures of avoiding road accidents.
D. Latest information about long－life concrete bridges.
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四、閱讀理解（30分）
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四、閱讀理解

Each morning a rich man found a poor man sitting on a park bench (長凳). The poor man always sat there, looking at the big hotel in which the rich man lived. One day the rich man got out of his car and said to the poor man, “Excuse me, but I just want to know why you sit here and look at my hotel every morning.” “Sir,” said the poor man, “I am a failure. I have no money, no family, no home. I sleep on this bench, and every night I dream that one day I’ll sleep in that hotel.” The rich man said, “That is not so hard. Tonight your dream will come true. I’ll pay for the best room in that hotel for you for a whole month.”

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         A. the hotel        B. his home      C. the park        D. the car

2. Every morning, the poor man sat on the bench and _____

         A. waited for the rich man        B. looked at the rich man’s hotel

         C. looked at the rich man’s car     D. enjoyed the clean air

3. The poor man moved out of the hotel because_______

         A. he didn’t want to live in such a fine room

B. he didn’t like the rich man

C. he couldn’t pay for the room

D. he couldn’t get any sleep at all there

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         A. sorry         B. nice         C. sad       D.terrible

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A. ①③④      
B. ②③④       
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