《名校推荐》北京市第四中学人教版高中英语选修6 UNIT 4 GLOBAL WARMING 语言应用 .doc

1、Global warming 语言应用 I. About global warming根据所学填空。 Global warming refers to an average increase in the earths , which in turn causes changes in . Causes of global warming1.Carbon dioxide emissions from fossil fuel burning power plants Our ever increasing addiction to from coal burning power plants r

2、eleases enormous amounts of into the .Every day, more electric gadgets the market, and without widespread alternative , we are highly dependent on burning coal for our and .2. Carbon dioxide emissions from burning gasoline for transportation The increasing is responsible for about 33% of emissions.

3、With our population growing at , the demand formore cars and consumer goods means that we are increasing the use offossil fuels for and . 3. Methane(甲烷) emissions fromanimals andagriculture. Methane is another extremely potent(效力强的) , rankingright behind CO2. As methane escapes, the rate of global w

4、arming will significantly.4. Deforestation(砍伐森林), especially tropical forests for wood, pulp(木浆), and farmland. The use of forests for fuel is one cause of deforestation, but our appetite for and contributes to the mass deforestation.Forests remove and store carbon dioxide from the atmosphere, and t

5、his releases large amounts of carbon, as well as the amountof carbon capture on the planet.5. Increase in usage of chemical fertilizers on croplandsIn the last half of the 20th century, the use of chemical fertilizers has dramatically. The high rate of of fertilizers haseffects on of cropland. High

6、nitrate levels ingroundwater due to over-fertilization are the for human health. Deadliest Effects of Global Warming 1. Polar ice caps melting First, it will raise sea levels, which could displace millions of people.Second, melting ice caps will throw the out ofbalance. The ice caps are fresh water,

7、 and when they melt they will make the ocean less salty. The of the Gulf current will “screw up” ocean currents, which temperatures. Third, temperature rises and changing landscapes in the Arctic Circle will several species of animals. Only the most will survive.2. Widespread extinction of species I

8、t is reported that 75 species are every day, and 3 every hour.The loss and of their is the central cause of theirendangerment. , poaching and the growing effects of are also threats that wildlife face every day. And because we cant existwithout a diverse of species on Earth, this is scary news for h

9、umans.3. Natural disasters will take place frequently.Global warming will significantly increase the of the most worldwide. The storms such as and is increasing. represents one of the most dangerous to human settlements and is one of the most potentially momentous impacts ofglobal warming. Melting g

10、laciations can cause more frequent and more dangerous episodes of and . 4. Increased probability and intensity of droughts and heat wavesAlthough some areas of Earth will become due to global warming,other areas will suffer serious droughts and heat waves. will receivethe worst of it, with more seve

11、re droughts also expected in Europe. Water is already dangerously rare in Africa, and global warming could lead to and .5. More outbreaks of deadly diseases Climate greatly influences some of the most and diseasescurrently affecting millions of people across the world. With insects such as mosquitoe

12、s able to multiply in staggering thanks to even small rises in , global warming looks set to the spread of diseases like Malaria. II. Environmental protection in daily life Make a list of cutting your electricity billsu Lighting: 1. 2. 3. u Air conditioner:1. 2. 3. u Fridge:1. 2. 3. Cut your water bills 1. 2. 3. Cut your transportation bills1. 2. 3. Cut your paper bills 1. 2. 3.