2017届《名师A计划》高考英语新人教版一轮复习配套课件：选修6 Unit 4《Global warming》_高考复习指南

2017届《名师A计划》高考英语新人教版一轮复习配套课件：选修6 Unit 4《Global warming》

　　重点短语重点句型重点单词 1.如果没有温室效应,地球(的温度)会比现在(的温度)低33摄氏度左右。 Without the “greenhouse effect”,the earth would be about thirty-three degrees Celsius cooler than it is. 2.毫无疑问全球在变暖,而地球变暖正是人类活动导致的,并非一种无规律的自然现象。 There is no doubt that the earth is becoming warmer and that it is human activity that has caused this global warming rather than a random but natural phenomenon. 3.只要你在使用电器设备,你便可以把它开着;如果不用就把它关掉! It’s OK to leave an electrical appliance on so long as you are using it—if not,turn it off! 4.所有科学家都赞同这种观点:人们为了生产能量而燃烧诸如煤、天然气和石油这类化石燃料,从而引起了地球温度的升高。 All scientists subscribe to the view that the increase in the earth’s temperature is due to the burning of fossil fuels like coal,natural gas and oil to produce energy.

　　The temperature of the earth is rising rapidly 1.compared(compare) to other natural changes.So how has this come about and does it matter?All scientists subscribe to the view 2.that the increase in the earth’s temperature is due to 3.the burning of fossil fuels like coal,natural gas and oil to produce energy.Some byproducts of this process 4.are called(call) “greenhouse” gases,the most important one of 5.which is carbon dioxide.When huge quantities of extra carbon dioxide 6.are(be) added into the atmosphere,more heat energy tends to be trapped in the atmosphere 7.causing(cause) the global temperature to go up. The attitudes of scientists towards this rise are 8.completely(complete) different.Some think that the trend which increases the temperature would be a catastrophe.Others are opposed 9.to this view and believe that we should not worry about high levels of carbon dioxide in the air.Even if we start reducing the amount of carbon dioxide and other greenhouse gases,the climate is going to keep on warming for decades 10.or centuries.All in all,greenhouse gases are continuing to build up in the atmosphere.No one knows exactly the effects of global warming.