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1、THE EARTH IS BECOMIG WARMER-BUT DOES IT MATTER?听写词汇,During the 20th century the temperature of the earth 1._ about one degree Fahrenheit.That 2._ does not seem much to you or me,but it is a 3._ increase when compared to other natural 4._.So how has this 5._ and does it matter?Earth cares Sophie Arms
2、trong 6._.These questions,There is no doubt that the earth is becoming warmer(see Graph 1)and that it is human 7._ that has caused this 8._ warming rather than a 9._ but natural 10._.,rose,probably,rapid,changes,come about,explores,activity,global,random,phenomenon,All scientists 1._ the view that t
3、he increase in the earths temperature is due to the burning of 2._ _ like coal,natural gas and oil to produce energy.Some3._ of this process 4._“greenhouse”gases,the most important one of 5._ is carbon dioxide.Dr Janice Foster explains:“There is a natural phenomenon that 6._ call the“greenhouse effe
4、ct”.This is when small amounts of gases in the 7._,like carbon dioxide,methane and water vapour,trap heat from the sun and 8._ warm the earth.,fossil fuels,subscribe to,byproducts,are called,which,scientists,atmosphere,therefore,Without thegreenhouse effect the earth would be about thirty-three degr
5、ees Celscius 9._ than it is.So,we need those gases.The problem 10._ when we add huge 11._ extra carbon dioxide into the atmosphere.It means that more heat energy 12._ to 13._ in the atmosphere 14._ the global temperature to 15._.,begins,quantities of,tends,be trapped,causing,go up,cooler,We know tha
6、t the levels of carbon dioxide 1._ greatly over the last 100 to 150 years.It was a scientist 2._ Charles Keeling,3._ made 4._ 5._ of the amount of carbon dioxide in the atmosphere from 1957 to 1997.He found that between these years the carbon dioxide in the atmosphere went up from around 315 parts t
7、o around 370 parts 6._ million(see Graph 2),have increased,called,who,accurate,measurements,per,All scientists accept this 7._.They also agree that it is the burning of more and more fossil fuels that has 8._ this increase in carbon dioxide.So how high will the temperature increase go?Dr Janice Fost
8、er says that over the next 100 years the 9._ of warming could be as low as 1 to 1.5 degrees Celsius,but it could be 10._ high as 5 degrees.,data,resulted in,amount,as,However,the 1._ of scientists 2._ this rise in 3._ different.On the one hand,Dr Foster thinks that the 4._ which increases the temper
9、ature by 5 degrees would be a 5._.She says,“We cant 6._ the climate well enough to know what 7._,but it could be very serious.”Others who 8._ _ her think there may be a rise of several metres in the sea level,or predict severe storms,9._,10._,famines,the spread of diseases and the disappearance of s
10、pecies.,attitude,towards,completely,trend,catastrophe,predict,to expect,agree with,floods,droughts,On the other hand,there are those,like George Hambley,who 1._ this view,believe that we should not 2._ _ high levels of carbon dioxide in the air.They predict that any warming will be 3._ with few bad
11、4._ 5._.In fact,Hambley 6._,“More carbon dioxide is actually a 7._ thing.It will make plants grow quicker;crops will produce more;it will 8._ a greater 9._ of animals-all of 10._ will make life for human beings better.”,are opposed to,worry about,mild,environmental,consequences,states,positive,encou
12、rage,range,which,Greenhouse gases continue to 1._ in the atmosphere.2._ we start 3._ the amount of carbon dioxide and other greenhouse gases,the 4._ is going to 5._ warming for 6._s or 7._.No one knows the 8._ of global warming.Does that 9._ we should do nothing?Or,are the 10._s too great?,build up,Even if,reducing,climate,keep on,decade,centuries,effects,risk,mean,
