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1、Unit 4 Global warming Section 2 Learning about Language .单词拼写1Childrens words and actions are often fairly random .2Fossil fuels alone wont cut in.3Look out! Youd better walk steadily .4Its hot out very hot, very humid.5There is a tendency (趋势)towards regional cooperation.6The earthquake caused wide
2、spread (分布广的) damage to the country.7My mother is an economical (节俭的)housewife.8The graph shows the average (平均的) temperature of April.9So far no evidence has been found to support the existence of any living thing on the moon.10It is a happy marriage on the whole .按要求改写句子1I found a key in his pocke
3、t.(强调宾语) It was a key that I found in his pocket. 2They could not cross the river because the water had risen.(强调原因状语) It was because the water had risen that they could not cross the river. 3Where did he buy the bike？(强调特殊疑问词where) Where was it that he bought the bike？ 4It is the letter that you go
4、t yesterday that makes you so sad.(改为一般疑问句) Is it the letter that you got yesterday that makes you so sad？ 5Mike and Mary helped the old man several days ago. (强调主语) It was Mike and Mary who/that helped the old man several days ago. .完成句子1It was not until a month later (直到一个月后)that I received the ma
5、nagers reply.2 It was in 2015 that (就是在2015年)Zhang Lei won the title as the singer with the “Voice of the Year”3I cant quite remember when it was that (究竟在什么时候)I was taken to Beijing.4How time flies！Its in several months that we will graduate (我们将毕业)5Can it be in the drawer that you put your keys (你
6、放了你的钥匙)?6I really dont know where it was that (到底在哪里)I put my wallet.7Where did you get to know her?It was on the farm where we worked (我们工作过的)8 Who was it that (究竟是谁)played a trick on the new English teacher?9(2016天津高考)You are waiting at a wrong place. It is at the hotel that (就是在旅馆)the coach picks
7、 up tourists.10My parents think I didnt study for my exams，but I did study (我的确学习了).阅读理解AGlobal warming may or may not be the great environmental crisis of the 21st century, butregardless of whether it is or isntwe wont do much about it. We will argue over it and may even，as a nation，make some fairl
8、y solemnsounding commitments(承诺) to avoid it. But the more dramatic and meaningful these commitments seem，the less likely they are to be observed.Al Gore calls global warming an “inconvenient truth”， as if merely recognising it could put us a path to a solution. But the real truth is that we dont kn
9、ow enough to relieve global warming，andwithout major technological breakthroughswe cant do much about it.From 2003 to 2050, the worlds population is projected to grow from 6. 4 billion to 9. 1 billion, a 42% increase. If energy use per person and technology remain the same, total energy use and gree
10、nhouse gas emissions (排放) (mainly CO2) will be 42% higher in 2050. But thats too low, because societies that grow richer use more energy. We need economic growth unless we condemn the worlds poor to their present poverty and freeze everyone elses living standards. With modest growth, energy use and
11、greenhouse gas emissions will double by 2050.No government will adopt rigid restrictions on economic growth and personal freedom (limits on electricity usage, driving and travel) that might cut back global warming. Still, politicians want to show theyre “doing something”. Consider the Kyoto Protocol
12、(京都议定书 ). It allowed countries that joined to punish those that didnt. But it hasnt reduced CO2 emissions (up about 25% since 1990), and many signatories (签字国) didnt adopt tough enough policies to hit their 20082012 targets.The practical conclusion is that if global warming is a potential disaster,
13、the only solution is new technology. Only an aggressive research and development program might find ways of breaking our dependence on fossil fuels or dealing with it.The trouble with the global warming debate is that it has become a moral problem when its really an engineering one.The inconvenient
14、truth is that if we dont solve the engineering problem, were helpless.文章大意：全球变暖是一个不容忽视的问题，必须通过新科技来解决。1What is said about global warming in the first paragraph？ D AIt may not prove an environmental crisis at all.BIt is an issue requiring worldwide commitments.CSerious steps have been taken to avoid o
15、r stop it.DVery little will be done to bring it under control.解析：由第一段第二、三句可知答案。2According to the authors understanding, what is Al Gores view on global warming？ C AIt is a reality both people and politicians are unaware of.BIt is a phenomenon that causes us many inconveniences. CIt is a problem that can be solved once it is recognised.DIt is an area where we actually have little knowledge about.解析：根据第二段中“as if merely recognising it could put us a path to a solution”可知，作者认为Al Gore说的话的意思是C项内容。3Greenhouse gas emissions w
