19.A.The likely reason of global warming
B.Global warming-a world problem
C.The fast increase in recent years
D.What we should do to avoid greenhouse gases producing
E.The earth is becoming warmer
F.Different opinions on the cause of global warming
61.E
Is the world warming up?According to many reports,the answer is yes.Eleven of the hottest years since 1850appeared between 1995and 2006.Last year,the United Nation's Intergovernment Panel on Climate Change (IPCC) reported the earth was about 0.75℃warmer than it was in 1850.While this doesn't sound like a lot,a small difference in average temperature can make a big difference in climate.During the last Ice Age,the planet was only about five degrees colder than now.
62.C
It's all about the speed at which temperatures are changing.In the past,temperatures moved up or down step by step.But in the 20th century,especially since 1976,temperatures have likely risen more quickly than during any century in the last 1000years.Warming may bring improved harvests to northern countries such as Canada and Russia.However,many species won't like these conditions.They begin moving towards cooler places and cause lots of trouble to human world.
63.A
The IPCC reported that human activity is very likely responsible by increasing the greenhouse effect.Some gases cause the air to take in heat energy.Without the greenhouse effect,the earth's average temperature would be-18℃rather than the present comfortable 14.6℃.The main greenhouse gases are carbon dioxide,water vapor and some other gases.Burning oil,coal and waste adds to the carbon dioxide,and it has increased 35% since 1850.
64.F
Many researchers have found that natural forces alone don't explain the temperature increases over the last 30to 40years.Their study shows that as carbon dioxide goes up,temperature will rise,too.But some scientists don't agree.They think the effect of human produced greenhouse gases is very small compared to the normal changes that the climate causes.
65.D
When asked whether humans are causing the world warming,Carl Wunsch,a professor at Massachusetts Institute of Technology says,"It seems very likely from what I've seen.Is it 100% sure?No.There is something to do with natural changes."Does that mean we should have a"wait-and-see"attitude?Not according to Wunsch.He points out we buy house insurance not because we are sure our homes will be on fire,but because it's a danger we'd rather avoid.

分析 文章分別介紹了全球變暖,尤其近些年上升幅度更快的事實(shí)以及原因,學(xué)者的不同看法,以及呼吁,倡導(dǎo)大家采取行動(dòng)

解答 61-65 ECAFD
61.E 抓住關(guān)鍵句,Is the world warming up?According to many reports,the answer is yes.句意:世界變暖了嗎?根據(jù)許多報(bào)道,答案是的,the earth was about 0.75℃warmer than it was in 1850.地球比1850年高0.75度,所以此部分是The earth is becoming warmer
地球變得更暖和了,所以選E,
62.C文章細(xì)節(jié),In the past,temperatures moved up or down step by step.But in the 20th century,especially since 1976,temperatures have likely risen more quickly than during any century in the last 1000years.過去,溫度是逐步上升,但在20世紀(jì),尤其自從1976,氣溫比過去100年任何時(shí)候的溫度上升都快,所以選C,The fast increase in recent years
63.A 深層理解,human activity is very likely responsible by increasing the greenhouse effect人類活動(dòng)通過增加溫室氣體是要負(fù)責(zé)的.Burning oil,coal and waste adds to the carbon dioxide.燃燒的油,煤和廢棄物也增添了二氧化碳,所以此部分是造成全球變暖最主要的原因,故選A.
64.F 抓住關(guān)鍵句,Many researchers have found that natural forces alone don't explain the temperature increases over the last 30to 40years.許多研究人員發(fā)現(xiàn)自然力不能解釋過去30,40 年溫度的增加,But some scientists don't agree,但一些科學(xué)家不贊同,因此可見是對(duì)全球變暖原因的不同觀點(diǎn),不同見解,Different opinions on the cause of global warming,所以選F,
65.D理解歸納,Does that mean we should have a"wait-and-see"attitude?.He points out we buy house insurance not because we are sure our homes will be on fire,but because it's a danger we'd rather avoid全球變暖不全是人為因素,是不是意味著人就旁觀呢,學(xué)者打了個(gè)比方,我們買房險(xiǎn),不是我們確信我們房子會(huì)著火,而是因?yàn)槲覀兿胍苊怙L(fēng)險(xiǎn),可見是人們發(fā)出呼吁,倡導(dǎo)大家拿出行動(dòng)的時(shí)候了,所以選DWhat we should do to avoid greenhouse gases producing

點(diǎn)評(píng) 本文考查了考生的歸納整理能力,要求能抓住段落中的中心句和關(guān)鍵詞準(zhǔn)確的把握段落大意.要求抓住文章和主旨相關(guān)的關(guān)鍵句,進(jìn)行歸納.

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