1、Unit 5 第四课时.六选五根据短文内容，从下面的选项中选出能概括每一段主题的最佳选项。选项中有一项为多余项。AThe likely reason of global warmingBGlobal warminga world problemCThe fast increase in recent yearsDWhat we should do to avoid greenhouse gases producingEThe earth is becoming warmerFDifferent opinions on the cause of global warming1_Is the wo
2、rld warming up? According to many reports, the answer is yes. Eleven of the hottest years since 1850 appeared between 1995 and 2006. Last year, the United Nations Intergovernment Panel on Climate Change (IPCC) reported the earth was about 0.75 warmer than it was in 1850. While this doesnt sound like
3、 a lot, a small difference in average temperature can make a big difference in climate. During the last Ice Age, the planet was only about five degrees colder than now.2_Its all about the speed at which temperatures are changing. In the past, temperatures moved up or down step by step. But in the 20
4、th century, especially since 1976, temperatures have likely risen more quickly than during any century in the last 1000 years. Warming may bring improved harvests to northern countries such as Canada and Russia. However, many species wont like these conditions. They begin moving towards cooler place
5、s and cause lots of trouble to human world.3_The IPCC reported that human activity is very likely responsible by increasing the greenhouse effect. Some gases cause the air to take in heat energy. Without the greenhouse effect, the earths average temperature would be 18 rather than the present comfor
6、table 14.6. The main greenhouse gases are carbon dioxide, water vapor and some other gases. Burning oil, coal and waste adds to the carbon dioxide, and it has increased 35% since 1850.4_Many researchers have found that natural forces alone dont explain the temperature increases over the last 30 to 4
7、0 years. Their study shows that as carbon dioxide goes up, temperature will rise, too. But some scientists dont agree. They think the effect of human produced greenhouse gases is very small compared to the normal changes that the climate causes.5_When asked whether humans are causing the world warmi
8、ng, Carl Wunsch, a professor at Massachusetts Institute of Technology says, “ It seems very likely from what Ive seen. Is it 100% sure? No. There is something to do with natural changes.” Does that mean we should have a “waitandsee” attitude? Not according to Wunsch. He points out we buy house insur
9、ance not because we are sure our homes will be on fire, but because its a danger wed rather avoid.答案：15ECAFD.阅读表达阅读下面短文，并根据短文后的要求回答问题(请注意问题后的字数要求)。1Canadian culture was heavily influenced by British culture and traditions.Now one can also notice the influence of American culture.Over the years, lots
10、 of people have moved to Canada.There has been a healthy change of Canadians ideas that has resulted in the development of certain special features in Canada.The people of Canada have always been proud of their diverse cultural backgrounds.2Art: Canada has some of the most wonderful classical works
11、of art.In the year 1930, artists began developing their own personal style.The “Group of Seven” is considered to be the first group of native artists to create their own style.3Language and religion: Because of its diverse cultures, Canada has two official languages, English and French.There is _.A
12、number of people in Canada have confirmed that they have no religious belief, though there are many other groups that follow Protestantism as a religion.4Literature: The literature of Canada basically shows the different cultural influences of other countries.Some of the early works were divided acc
13、ording to the region of Canada from which the author came, but there were also authors who gave a humorous touch to serious contents.A number of authors have been awarded for their literature works.5Music: Music in Canada has seen many developments in styles along the way.Many Canadian; musicians ha
14、ve earned worldwide fame.From folk music to rock, Canadian music continues to entertain people.In recent years, music from Asia and Africa has found quite a fan following in Canada.1What is the main idea of the text? (no more than 3 words)_2Fill in the blank in Paragraph 3 with proper words. (no mor
15、e than 3 words)_3What does the word “their” (Para. 1) refer to? (no more than 2 words)_4Canadian culture has been influenced by many other countries.List all of them mentioned in the text._5Complete the following statement with proper words.(no more than 5 words)Recently, music from Asia and Africa
16、has become _ in Canada.答案：1Canadian culture2no official religion3Canadians/Canadian peoples4British, American, Asian and African cultures5more and more popular.任务型读写阅读下面短文，根据所读内容在表格中的空白处填入恰当的单词。注意：每个空格只填一个单词。This year, about 2,300 teenagers from all over the world will spend about 10 months in US ho
17、mes. At the same time about 1,300 American teenagers will go to other countries to learn new languages and learn the rest of the world.Here is a 2way student exchange in action. Fred,19, spent last year in Germany with Georges family. In turn, Georges son Mike spent a year in Freds home in America.F
18、red, a lively young man, knew little German when he arrived. But after 2 months of studying, the language became easy for him. School was completely different from what he had expected and it was much harder. Students rose respectfully when the teacher entered the room. They took 14 subjects instead
19、 of 6 that were usually taken in the US.Family life, too, was different. The fathers word was the law. All the activities were done with the family rather than individually. Fred found the food to be too simple at first. He also missed having a car.“Back home，you pick up some friends in a car and go
20、 out to have a good time. In Germany, you walk but you soon learn to like it.”At the same time, in America, Mike，a friendly German boy, was also forming his own ideas. “I suppose I should criticize American schools” he says, “It is far too easy for our level but I have to say that I like it a lot. I
21、n Germany, we do nothing but study. Here we take part in many other activities. I think that maybe American schools are better in training their citizens. There ought to be some middle ground between the two.” 1._between American school life and German school lifeItems (项目)American studentsGerman st
22、udentsClass rulesThey dont have to stand upThey have to rise and show 2._for their teachers3._ lifeThey do their own things 4._They have to listen to their fathers as fathers always make the final 5_.School 6_They have six which are very easy to learnThey have 14 which are much more difficultGoing o
23、utThey can 7._carsThey have to walk all the waySchool lifeThey spend a lot of time taking part in 8._They spend a lot of time 9._.ConclusionTo Fred, the German school is completely different from his 10._.答案：1.Differences2.respect3.Family4.individually5decision6.subjects7.drive8.activities9.studying
24、10expectation.补全对话根据对话内容，从对话后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。Can you help me?Sure, whats the problem?_1_Well, how about San Francisco? We went there last year and had a great time._2_Well, there is Golden Gate Bridge of course, and Golden Gate Park. Its a really big park. You can go for long walks or
25、take a rest in the Japanese Tea Garden. Its beautiful there._3_There is also a place called Fishermans Wharf. Thats really popular with tourists. There are lots of shops, cafes and restaurants. And from there you can go on a boat trip to Alcatraz. You know, its a small but very beautiful island._4_N
26、o, you cant stay on the island; there arent any hotels. You can only go for the day. I think Ive still got a book about San Francisco. I can lend it to you._5_AWhat can you do there?BOh, great! What a great place to stay in!CWhat an idea! What is the best time to go there?DI cant decide where to go for the holidayany ideas?EThanks a lot. San Francisco, here I come!FHmm, that sounds good.GHow can I go there?答案：15DAFBE