Because air pollution has been greatly reduced, this city is still _______ .

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• Cleaner heating system will in Beijing to control air pollution.

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• Increased air pollution __________ respiratory illness.

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• Pollution in the air reduced the _________ near the airport.

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• I hope all the precautions against air pollution, ______ suggested by the local government, will be seriously considered here.

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• 听力原文：W: Air pollution is one of the most serious problems in the world. Polluted air can make us sick or even kill us. Why isn't more done to stop it？

  M: Everyone wants to stop it, but it is a difficult problem to solve. Meat pollution is mused by things people need. W: What do you mean？ M: Well, automobiles and airplanes cause pollution but they also provide transportation. W: Right. And factories cause air pollution but they provide people with jobs and products. M: Cities are the worst offenders. In crowded cities, factories and cars can add tons of pollution to the air every day. W: Yes. When I drove, to town yesterday, the clear air changed. It seemed like a dark cloud hung over the city. M: Nobody likes air pollution. It smells bad; it makes it difficult to breathe. W: True, it even damages the plants that provide tis with food. No wonder we get sick. It's dangerous to everyone's health. M: I think everyone knows it is a serious problem. When air pollution can even damage strong materials like steel and concrete; think what it does to poor humans. W: It is terrible, and yet we do need some things that cause it. We'll have to try to figure out a solution. (20) A．Most people don't think it is a serious problem. B．Most of our pollution is caused by things people need. C．The government has not spent enough money to stop it. D．The seriousness of pollution has not been realized by the government.

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• The air pollution index went up t0 300 within a few days．

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• The Mexican government takes half measures to solve the pollution problem because ______.

  A．it is not wise enough to come up with effective measures B．Mexican economy depends very much on cars and factories C．Mexicans are able to adapt themselves to the current emergency D．Mexicans enjoy playing dangerous games with their health

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• Recent studies have shown that air inside many homes, office buildings, and schools is full of pollutants such as ().

  A、chemicals B、smoke C、bacteria D、perfume

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• Recent studies have shown that air into a house often has higher concentrations of contaminants than heavily polluted air outside.

  此题为多项选择题。

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• ______ at in this way, the air pollution in this region doesnt seem so serious.

  A．Having looked B．Looked C．Looking D．To look

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• 听力原文：W: Mr. Chairman, I think something ought to be clone about our city environment at once. You know, chimney pollution to land, air and water has mused serious health problems.

  M: Could you elaborate on that, Mr. Hopkins？ Q: Where does this conversation probably take place？ (14) A．In a conference room. B．In a factory. C．On board a ship. D．In a hospital.

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• The Mexican government takes half measures to solve the pollution problem because_____.

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• As pointed out at the beginning of the passage, people used to think that air pollution ______ .

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• Controlling air pollution is another crucial objective, the wrong-door is the______.

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• In what way can natural pollutants play an important role in controlling air pollution？

  A.They function as part of a purification process. B.They are dwarfed by the pollutants produced by human activities. C.They are less harmful to living beings than are other pollutants. D.They have existed since the Earth developed.

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• 听力原文： The World Bank says air pollution is one of the worst environmental problems in large cities around the world. Air pollution causes breathing problems. It also threatens crop production in farm areas near huge cities.

  The United Nations Environment Program says that air pollution reduces the amount of crops produced, h also reduces the nutrient level of crops. As a result, both the buyer and the seller of crops are hurt by air pollution. The UN says dirty air is a major source of metal in crops. These metals include lead, zinc and copper. These metals can build up to dangerously high levels in the parts of plants that people eat. The German Appropriate Technology Exchange, GATE, reports that eating these metals can cause developmental problems and low intelligence levels among children. Some kinds of cancers and kidney damage have also been linked to metals in crops. Who is hurt by air pollution？ A．The buyer. B．The seller. C．Both the buyer and the seller. D．None.

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• People also react very differently to exposure to indoor air pollutants. Further research is 9 to

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• The most important ways to reduce air pollution are to drive less, use less electricit

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• Find a synonym to replace the words in the sentence in bold WITHOUT changing the meaning! Ensure that the word you replace it with is grammatically correct in the sentence. "It would be a mischaracterization to say that the coronavirus was beneficial to health because of these air pollution reductions," says Jill Baumgartner, associate professor and epidemiologist at McGill University.

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• Educators in schools and universities teach students about the effects of air pollution.

  此题为判断题(对，错)。

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