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1、Unit 4Global warming【导语】全球气温变暖给南极的企鹅带来了怎样的影响，你知道吗？为了保护他们，我们应该怎么做？Antarctica, the coldest place on Earth, is too cold for most humans.Its a different story for penguins，though.Several types of penguins make their home in Antarctica.The birds walk with short steps all over the icy continent.However，th
2、ey dont all have “happy feet”Some of Antarcticas penguins are endangered.The animals, hunt for food in waters off Antarcticas coasts.They use floating sea ice as a place to rest while they search.In recent years, global warming, the slow rise of Earths temperature, has been causing the ice to melt.“
3、Global warming is reducing the amount of food for penguins so that they cant find enough to eat, ”scientist Shaye Wolf said.Turning up the heatHumans may be directly responsible for the continents temperature changes, according to a new study in the journal Nature Geoscience.Temperatures in Antarcti
4、ca usually do not go above freezing, or 32 degrees Fahrenheit.But lately the weather has been heating up.People add to global warming when they drive cars or use electricity.That burns fossil fuels, such as coal，oil，and natural gas.The burning of fossil fuels gives off gases that warm Earth.The harm
5、ful gases stay in the atmosphere above Antarctica, researchers say.They found that the west side of the continent is especially affected by global warming.Scientists are concerned about the possibility that Antarcticas ice may melt more over time.The icy continent is about 5 million square miles.It
6、is covered by glaciers and an ice cap (冰冠) about 7，100 feet thick.If the ice melts, that could cause sea levels to rise around the world.Higher sea levels could lead to dangerous flooding in some countries.Cool fix for AntarcticaExperts are hopeful that conditions in Antarctica can be improved.They
7、say people can reduce global warming by using cars and electricity less often.Even kids can help.Wolf suggests，“Talk to your friends and family about global warming, how it is harming penguins, and how important it is to stop global warming today.”【词海拾贝】1Antarctica n南极洲2penguin n企鹅3fossil n化石；生物4gla
8、cier n冰河；冰川【问题思考】1Why cant penguins find enough food to eat?_答案：Because global warming is reducing the amount of food for them.2Who may be directly responsible for global warming?_答案：Humans.将单词与其正确释义连线1consumeA图表；曲线图2graph B现象3phenomenon C燃料4fuel D平均的5trend E趋势；倾向6mild F温和的；温柔的7consequence G环境；情况8ci
9、rcumstance H贡献9average I消费；消耗10contribution J结果答案：1I2A3B4C5E6F7J8G9D10H.根据所给汉语提示写出单词1_ n洪水；水灾2_ vt.反对；反抗3_ adj.平稳的；持续的4_ adj.分布广的；普遍的5_ vt.拥护；提倡，主张6_ n污染；弄脏答案：1.flood2.oppose3.steady4.widespread5advocate6.pollution.根据英语释义写出单词1_： a quick look2_：an amount or a number of sth3_：to pay money regularly to
10、 support a charity4_：to express something in speech or writing， especially in a definite or formal way5_：happening or chosen without any definite plan，aim or pattern6_：to take a particular direction7_：a sudden event resulting in great loss and misfortune8_：the limits between which sth varies；a set o
11、f products of a particular type答案：1.glance2.quantity3.subscribe4.state5random6.tend7.catastrophe8.range.选用短语的适当形式完成句子keep on；be opposed to；come about；result in；subscribe to；go up；quantities of；even if1There are large _ rain in this area.答案：quantities of2Do you know how global warming _?答案：comes abou
12、t3I have never _ the view that schooldays are the happiest days of your life.答案：subscribed to4If you want to make the kite _， pull the string hard，and then release it slowly.答案：go up5His careless speech _ much argument.答案：resulted in6We _ the practice of power politics between nations.答案：are opposed
13、 to.领会句子所用的句型并译成汉语1That probably does not seem much to you or me，but it is a rapid increase when_compared_to other natural changes._答案：这个数值对你我来说可能是无所谓的，但是跟其他自然变化相比较而言，这却是一种快速的增长。2There_is_no_doubt_that the earth is becoming warmer (see Graph 1)and that it is human activity that has caused this global warming rather than a random but natural phenomenon._答案：毫无疑问，地球是在变暖(见表一)，而地球变暖正是人类活动导致的，并非是一种无规律的自然现象。3Without the “greenhouse effect”，the earth would_be about thirtythree degrees Celsius cooler than it
