题目内容

Air pollution is ________ by waste gases of cars.


  1. A.
    main cause
  2. B.
    mainly causing
  3. C.
    main caused
  4. D.
    mainly caused
D
解析：be caused by意为“被引起”。mainly是副词，修饰动词caused。
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Two magazines recently listed the best cities to live in. Here are two of the cities listed as “the world’s best.”
SAN JOSE, COSTA RICA  The city has comfortable weather all year round (15℃ to 26℃). Housing is not very expensive in San Jose. Also, many of the city’s older neighborhoods are very beautiful and have small hotels and cafés. Beautiful mountains are around the city. Lots of people go sightseeing there every year. But air pollution is a problem in the city center.
HONG KONG, CHINA   This lively city—once a small fishing village—is today an international business center. It is an interesting mix of East and West, old and new. Modern tall buildings are next to small temples (庙宇). Popular nightclubs are close to traditional teahouses. Busy people fill the streets at all hours of the day. But outside the city, there are parks for walking or relaxing. Hong Kong is famous for its wonderful native dishes. There’s also food from Europe, North America, and other parts of Asia. However, this small city has a large population of nearly seven million! That’s why housing is often very expensive. Traffic and air pollution are also a problem.
【小题1】Which of the following is NOT mentioned about San Jose?

A．The weather.B．The mountains.
C．The air.D．The traffic.
【小题2】What makes Hong Kong the world’s best according to this passage?
A．The lively city and the wonderful dishes.
B．The large population and the traffic.
C．The expensive housing.
D．The beautiful temples.
【小题3】The writer thinks housing in Hong Kong is expensive because ______.
A．it is a small fishing villageB．it is a mix of East and West
C．it is a beautiful cityD．there are too many people in the city
【小题4】What do the two cities have in common?
A．They both have beautiful mountains.B．They both have a large population.
C．Air pollution is a problem in both.D．They are both crowded.
【小题5】From the passage, we can know that ______.
A．San Jose and Hong Kong are the only two cities of the world’s best
B．San Jose has more natural sights than Hong Kong does
C．the weather in both cities is fine
D．San Jose used to be a small fishing village

Hundreds of years ago, life was much harder than it is today．People didn’t have modern machines．There was no modern medicine, either．
Life today has brought new problems．One of the biggest is pollution．Water pollution has made our rivers and lakes dirty．It kills our fish and pollutes our drinking water．Noise pollution makes us talk louder and become angry more easily．Air pollution is the most serious kind of pollution．It’s bad to all living things in the world．
Cars, planes and factories all pollute our air every day．Sometimes the polluted air is so thick that it is like a quilt over a city．This kind of quilt is called smog．
Many countries are making rules to flight pollution．Factories must now clean their water before it is thrown away and they mustn’t blow dirty smoke into the air
We need to do many other things．We can put waste things in the dustbin and do not throw them on the ground，there will be less pollution．
Rules are not enough．Every person must help to fight pollution．
【小题1】Hundreds of years ago．life was much harder than it is today because        ．

A．there were not any modern machinesB．there was no modern medicine
C．both A and BD．there were not many people
【小题2】The most serious kind of pollution is         ．
A．noise pollutionB．air pollution
C．water pollutionD．All the above
【小题3】From the passage we know that       ．
A．a few years ago，there was no smog at all
B．today people don’t have to talk to each other in a loud voice
C．we can drink water from the polluted rivers and lakes
D．people are making rules in order to fight pollution

先阅读短文，然后根据短文内容从方框内所给的单词中选择恰当的词（注意词形变化）填入短文空白处，使短文完整、通顺。一词只用一次，一空限填一词。方框中有两个词是多余的。将能填入空白处的答案写在答题卡上的相应题号后。

The world itself is becoming much smaller by using modern traffic and modern communication. Life today is much    【小题1】   than it was hundreds of years ago, but it has brought new problems. One of the biggest is    【小题2】    . To pollute means to make things dirty. Pollution comes in many ways. We see it, drink it and even hear it.
Man has been polluting the earth. The more people are, the more pollution is. Many years ago, the problem was not so 【小题3】    because there were not so many people. When the land was    【小题4】  up or the river was dirty in a place, men moved to another one. But this is no    【小题5】     true. Man is now slowly pollution the   【小题6】   world.
Air pollution is still the most serious. It’s bad to all living things in the world, but it is not    【小题7】  one kind of pollution. Water pollution   【小题8】    our fish and pollutes our drinking water. Noise pollution makes us become angry more easily.
Many countries are making rules to    【小题9】    pollution. They stop the people from burning coal in houses and factories in the city, and from blowing dirty smoke into the air. The pollution of SO2 is now the most dangerous problem of air pollution. It is caused by heavy traffic. It is certain that if there are fewer people driving, there will be   【小题10】   air pollution.
The earth is our home. We must take care of it. That means   【小题11】    the land, water and air clean.

根据短文内容，从短文后的选项中选出适当的选项补全短文。

     The earth is about 4,600 million years old. We humans have lived on the earth for only 35,000 years, but during this period we have changed our planet a lot in many ways.    1  

     All over the world, people have cut down millions of trees, so more and more kinds of animals and plants are disappearing. In big cities, cars and buses have polluted the air. Factories have also polluted the land and the water.

         2   It is important to the earth. But now air pollution is destroying it and that has made a very big hole in the ozone layer (臭氧层).   3  This is very dangerous because it can cause cancer.

     Carbon dioxide (CO2) in the air has increased a lot.   4  it has formed a "blanket" (毛毯) around the each.    5   This makes our earth become warmer and warmer. Therefore, this causes the level of the ocean to rise.

     All these problems are very serious. We must do something to stop our earth from being polluted anymore.

A. The heat from the sun can' t escape, so the temperature is rising.

B. Too much harmful light from the sun passes through it and reaches the earth directly,

C. Some things we've done are very good for the earth while some are bad.

D. Around the earth, there’s a special kind of oxygen (O2) called "ozone" (O3).

E. It mainly comes from different kinds of burning materials.

 

The world itself is becoming much smaller by using modern traffic and TV, telephone and so on. Life today is much easier than it was hundreds of years ago, but it has also brought new problems. One of the biggest is pollution (污染). Pollution comes in many ways. We see it, smell it, drink it and even hear it.
The more people, the more pollution. Many years ago, the problem was not so serious because there were not so many people. Man is now slowly polluting the whole world.
Air pollution is still the most serious. It’s bad to all living things in the world. Water pollution kills our fish and pollutes our drinking water. Noise pollution makes us become angry more easily.
Many countries are making rules to fight pollution. They stop people from burning coal (煤) in houses and factories in the city.
The pollution of SO2 is now the most dangerous problem of air pollution. It is caused by heavy traffic. It is sure that if there are fewer people driving, there will be less air pollution.

  1. 1.

    Our world is becoming much smaller _______.

    1. A.
      because the earth is being polluted day and night
    2. B.
      thanks to science development
    3. C.
      because of the rise in population
    4. D.
      because the earth is blown away by the wind every year
  2. 2.

    Thousands of years ago, life was _________it is today.

    1. A.
      much easier than
    2. B.
      as easy as
    3. C.
      as hard as
    4. D.
      much harder than
  3. 3.

    Pollution comes in many ways. We can even hear it. Here “it” means______.

    1. A.
      Water pollution
    2. B.
      air pollution
    3. C.
      noise pollution
    4. D.
      rubbish
  4. 4.

    Air pollution is the most serious kind of pollution because _______.

    1. A.
      it’s bad to all living things in the world
    2. B.
      it makes much noise
    3. C.
      it has made our rivers and lakes dirty
    4. D.
      it makes us become angry more easily
  5. 5.

    Which of the following is NOT TRUE?     

    1. A.
      Many countries are making rules to fight pollution.
    2. B.
      The pollution of the earth grows as fast as the world’s population does.
    3. C.
      From now on, maybe people should try to go to work by bus or bike instead of car ormotorbike. It is helpful to fight against the problem of SO2.
    4. D.
      The problem of pollution is not so serious because there are so many people

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