The ozone layer(臭氧層) is a thin layer of gas around the earth. It forms a special “blanket” around the planet. This “blanket” protects the earth from dangerous rays produced by the sun. Without the ozone layer, the earth’s climate could warm to dangerous levels. This increase in temperature would threaten our survival. Scientists recently have discovered a hole in the ozone layer above the Antarctica. Now there is great concern that this warning has started, endangering all life on the earth.
What has destroyed part of the ozone layer? Scientists do not know for sure. They suspect that our popular spray cans (噴漆罐) have played a part in the damage. Many spray cans contain dangerous gases. These gases might have destroyed the ozone layer fifteen miles above the earth’s surface, The chemicals used in refrigerators (冰箱) and air conditioners may contribute to the problem, too.
Many scientists believe that the destruction of the ozone layer is a serious problem for people everywhere. Global warming could change weather patterns around the world. Farmers and ranchers(牧場主) could find it more and more difficult to produce enough food for the earth’s people. If more of the sun’s dangerous rays reached the earth, there also could be an increase in skin cancers. Some skin cancers might cause people to die. Although some scientists do not believe there is a serious danger, obviously no one wants to take any chance on such a possibility.
Can scientists repair the hole in the ozone layer? They really don’t know the answer to that question. Can people do anything to save the ozone layer that the earth still has? Scientists stress the need to limit the use of spray cans and other items that contain the dangerous gases. This will not be an easy task. People all over the world use these items. Solving the problem certainly will require commitment and cooperation from everyone

  1. 1.

    The ozone layer exists to _____

    1. A.
      warm the earth to a proper level for life
    2. B.
      protect the earth from dangerous sun rays
    3. C.
      make all life on the earth in a dangerous situation
    4. D.
      prevent human beings from being harmed from the earth
  2. 2.

    Which of the following statements is TRUE according to the passage?

    1. A.
      Scientists aren’t sure what has destroyed part of the ozone layer
    2. B.
      Scientists recently have discovered a hole in the Antarctica
    3. C.
      Scientists prove that spray cans have destroyed part of the ozone layer
    4. D.
      Global warming doesn’t affect weather patterns around the world
  3. 3.

    The following may do harm to the ozone layer EXCEPT ______

    1. A.
      spray cans
    2. B.
      refrigerators
    3. C.
      ranchers
    4. D.
      air conditioners
  4. 4.

    Saving the ozone layer needs everyone’s effort because _____

    1. A.
      scientists are badly in need of others’ help
    2. B.
      items containing dangerous gases should be forbidden
    3. C.
      scientists can’t afford so much money to take measures
    4. D.
      people all over the world use items containing dangerous gases
BACD
試題分析:臭氧層是地球最好的保護傘,它吸收了來自太陽的大部分紫外線。臭氧層空洞的擴大將導(dǎo)致紫外線輻射加強,這不僅會嚴重破壞地球表面生態(tài)環(huán)境,同時也會增加人類患皮膚癌的危險。
1.細節(jié)題:從第一段的句子:This “blanket” protects the earth from dangerous rays produced by the sun. 可知臭氧層是用來保護地球免受太陽的有危險的光的傷害。選B
2.細節(jié)題:從第二段的句子:What has destroyed part of the ozone layer? Scientists do not know for sure. 可知科學家還不知道是什么破壞了臭氧層的一部分,選A
3.細節(jié)題:從第二段的句子:They suspect that our popular spray cans (噴漆罐) have played a part in the damage. 和The chemicals used in refrigerators (冰箱) and air conditioners may contribute to the problem, too. 可知噴漆罐,冰箱和空調(diào)都有可能破壞臭氧層,沒有提到ranchers,選C
4.細節(jié)題:從最后一段的句子:People all over the world use these items. Solving the problem certainly will require commitment and cooperation from everyone. 可知保護臭氧層人人有責,因為人人都在用含有危險氣體的東西。選D
考點:考查環(huán)保類短文
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The hole in the Earth's ozone layer (臭氧層) has until now protected Antarctica from the worst effects of global warming. But scientists have warned that as the hole closes up in the next few decades, temperatures on the continent could rise by around 3°C on average, with melting ice contributing to a global sea level increase of up to 1.4 meters.

In the past decades the western Antarctic has seen rapid ice loss as the world has warmed, but the other parts of the continent have, paradoxically, been cooling, resulting in a 10% increase in ice in the seas around the region. This is because the hole in the ozone layer has increased cold winds in Antarctica, making much of the continent surface colder than usual.

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    Johnson believes that international action to reduce global warming is required immediately or it may be too late. "Everything is connected —Antarctica may be a long way away but it is an important part of the Earth's system," said Johnson. "It contains 90% of the world's ice, 70% of the world's fresh water and that is enough, if it melts completely, to raise sea levels by 63 meters."

    Even in a worse-case situation scientists don't expect the ice to entirely disappear, but predict that, because of the melting ice sheets, average sea level rise will be around 1.4 meters higher by the end of the century.

The underlined word "paradoxically" (in Paragraph 2) most probably means "__".

A. rapidly     B. approximately       C. contradictorily    D. apparently

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A. Rising sea levels.           B. Warming sea water temperature.

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Damage to Ozone Layer Gets Worse
In the middle of winter, when snow is falling in many parts of the United States, scientists have sounded a warning to people who plan to spend many hours in the sun this summer.The warning: The sun's summertime rays are more dangerous than once thought.
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D.over the USA in the summertime in the mid-1980s
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We’re surrounded by chemistry in everyday life. Sometimes it is easy to see, like when your science teacher does a big experiment in class. At other times, it can be pretty hard to see everyday chemistry at work, but nearly everything you touch or use has some element of chemistry in it.

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