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1、第一学时Reading and ComprehensionAir pollutionPeople and the sources of air pollution are found in the same places. This means that cities with large populations have the biggest problem of dirty air. Air pollution is caused by many different things. A major source of air pollution is the gas fumes from
2、 cars. Statistics show that 93 percent of all auto trips are within cities. Another major source of dirty air is the burning of coal and oil for energy. This energy is needed to make electricity. Of course, much more electricity is used in the city than in the country.On the average, we throw away m
3、ore trash and garbage than the year before, The burning of garbage contributes to air pollution. Many major industries are also responsible for the dirty air in the around cities. The fumes from iron，steel，chemical，and petroleum production add particles to the air.Task 1仔细阅读课文“The Earth is Becoming
4、Warmer But does it Matter？”根据肯内容选出最佳选项。1Who found out the amount of carbon dioxide in the atmosphere from 1957 to 1997?ADr Janice Foster. BCharles Keeling.CGeorge Hambley. DSophie Armstrong.答案：B2. What may be the bad effects of global warming according to the passage?AThere may be a rise of several
5、metres in the sea level.BThere may be severe storms, floods, droughts, famines or the spread of diseases.CThere may be the disappearance of species.DAll of the above.答案：D3The author probably agrees that _Aactually global warming is good for human beingsBwe should do nothing about the global warmingC
6、catastrophes will happen if the globe keeps on warmingDa lot remains to be found out about the effects of global warming答案：D4Which of the statements is true?ANatural gas is a greenhouse gas.BCarbon dioxide is a byproduct of burning fossil fuels.CWe are sure of the effects of global warming now.DDr J
7、anice Foster believes that global warming will do good rather than harm to the earth.答案：BTask 2再次阅读课文“The Earth is Becoming WarmerBut does it Matter？”完成下列表格。DivisionParagraphSupporting detailsPart Para.1How has global warming 1._ and does it matter？Part Paras.25There is no doubt that it is human act
8、ivity that has caused this global warming rather than a 2._ but natural 3._.All scientists 4._ the view that global warming is 5._ the burning of fossil fuels to produce energy.More heat energy tends to be trapped in the atmosphere causing the global temperature to 6._Part Para.6Dr Janice Foster thi
9、nks that any trend in which the temperature increases by 5 degrees would lead to a 7._.George Hambley8._ this view and believes that we should not worry about high levels of carbon dioxide in the air. He thinks that any warming will be mild with few bad environmental 9._.Part Para.7Even if we start
10、reducing the amount of carbon dioxide and other greenhouse gases, the climate is going to 10._ warming for decades or centuries.答案：1come about2.random3.phenomenon4.subscribe to5.due to6.go up7.catastrophe8.is opposed to9consequences10.keep on Task 3根据课文“The Earth is Becoming WarmerBut does it Matter
11、？”在下面空格中填上恰当的词语，使文章连贯完整。All scientists subscribe to the view 1._ it is human activity that has caused the global warming.This activity is burning fossil fuels to produce energy.As a result，a 2._(nature) phenomenon called the “greenhouse effect” has come 3._Without this phenomenon，the earth would be
12、about thirtythree degrees Celsius 4._(cool) than it is.So，we need those gases.However，the global temperature 5._(rise) when we add huge quantities of extra carbon dioxide into the atmosphere.We know that the level of carbon dioxide have increased greatly 6._ the last 100 to 150 years.The attitudes o
13、f scientists 7._ this rise are completely different.Some think that the trend would be a catastrophe while some are 8._ (oppose) to this view，and 9._ believe that any warming will be mild with few bad environmental 10._(consequence)答案：1that2.natural3.about4.cooler5.will rise6over7.towards8.opposed9.they10.consequences
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