四川省广安市岳池县第一中学高中英语外研版必修4导学案 MODULE 4 GREAT SCIENTISTS 第2课时.doc

1、Period 2: Reading学习目标：1.了解中国长江三峡的情况2.利用单元词汇描绘名胜古迹3.培养快速阅读的能力学习重点：了解中国长江三峡的情况学习难点：良好阅读习惯和阅读能力的培养课前预习使用说明与学法指导：1. 了解背景知识加深对文章的理解2. 15分钟之内完成教材助读：The Three Gorges region is a scenic area along the Yangtze River in China with a total length of about 200 km.The Three Gorges takes up 120 km within this reg

2、ion.Although it is primarily famous for its scenery，the Three Gorges region is historically and culturally an important region in China.The Three Gorges region is located along the Yangtze River between the cities of Fengjie and Yichang in Chongqing Municipality and Hubei Province.Currently the Thre

3、e Gorges region is most famous for the Three Gorges Dam.The Three Gorges Dam is under construction at a place called Sandouping(三斗坪)in the middle of the Xiling Gorge.In addition to the impacts(影响)of the dam on the ecology and people(i.e.the mass relocation of towns and villages)of the region，the dam

4、 will also change the scenery of the Three Gorges.Because the water level will be higher，the gorges will be narrower and the mountains will appear lower.Supporters of the dam point out that because the mountains reach several thousand feet above the river，the gorges are still likely to offer fascina

5、ting views of the surrounding cliffs，and it should be noted that most riverboat companies that operate in the Three Gorges intend to continue to offer tours of the region: The increase in width of the Three Gorges will also allow larger ships through the gorges and it is predicted that river traffic

6、 of all kinds will increase.预习自测：课文原句背诵1He thought that people was to have more rice and to produce it more quickly.他认为，养活世人的关键是拥有更多的水稻并且能更快地生产出来。2The tubes were attached to a long stick which helped in a straight direction.箭管被绑在一根长棍子上，这根棍子能使火箭沿直线飞行。3Or was he carried miles into space， the worlds fi

7、rst astronaut?还是被带到了太空，成为了世界上第一位宇航员呢？我的疑问：_课内探究质疑探究：语篇理解阅读P42的Reading and Vocabulary部分，从每题所给的3个选项中选出最佳答案1The writer wrote this passage in order to .Atell about his experience as a teacher in ChinaBtell about his first visit to the Three GorgesCtell about his first ride on a boat along the Yangtze Ri

8、ver2Why did their colleagues suggest they not go on the Jiang you boat?ABecause the tickets for the Jiangyou boat are expensive.BBecause they are only for goods.CBecause they are crowded and mainly for goods and people trading along the river.3“Build the Three Gorges，Exploit the Yangtze River！”Which

9、 of the following words can take the place of the underlined word in the sentence?AExplore. BBuild.CTake advantage of.4Which of the following statements is TRUE according to the passage?AOn a beautiful afternoon they passed through the Wu Gorge.BThey took the boat upstream.CThere are lots of histori

10、cal places of interest along the Yangtze River.5This passage is organised by means of .Atime and eventsBdescriptionsCopinions and examples课文缩写用所给单词或短语的正确形式完成课文缩写detour；get on；dock；character；construction；deck；exploit；narrow；distant；downstreamWe decided to buy tickets for the Jiangyou boat.We just had

11、 to show our passports and they let us 1. the boat.We left the 2. on a beautiful afternoon.The sun was shining brightly as we sailed 3. through a hilly region.We slept through the Qutang Gorge，which 4. to 350 feet as the river rushes through the twomilehigh mountains.At Wushan we made a 5. up the Da

12、ning River.As we came out of the Xiling Gorge，we sailed into the 6. site of the dam.All the passengers came on 7. ，took pictures and pointed at the site，but we werent allowed to get off the boat.On a 8. mountain was a sign in 20foot 9. .“Build the Three Gorges Dam，10. the Yangtze River，”it said.当堂检测

13、：短语填空at the edge of；at least；be heavy with；in the distance；be surrounded by1The great actor his usual crowd of hangerson.2Every autumn，the apple trees behind my house apples.3I can hear the sound of the cheering .4There are three things we can do to keep healthy every day.Do you know what they are?5

14、Listen! The birds are singing woods.课后反思：_课后训练Around 200 million years ago, the earth was 18 degrees warmer than it is now. That might be a bit hot for humans, but it was just right for the giant dinosaurs that wandered about the earth during the Mesozoic (中生代的) era. A new study found that planteati

15、ng dinosaurs may have contributed to the warming of the earth by releasing significant amounts of methane (甲烷)The study, published in science journal Current Biology, focused on sauropods, longnecked herbivores (食草动物) that munched (用力咀嚼) on the top of trees. They were the largest of the dinosaurs; f

16、ood broke down in their stomachs for long periods of time. The researchers estimate that a sauropoda released 2,675 liters of methane per day adding up to a large amount of the greenhouse gas being pumped from dinosaurs gut into the atmosphere.Plant eaters naturally release methane as part of their

17、digestive process. The larger the animal, the more methane it produces. Methane, a greenhouse gas, traps heat and remains in the atmosphere for approximately 9 15 years, which warms the atmosphere.Today, some animals, such as cattle, goats and sheep, produce large amounts of methane as a byproduct t

18、o their food digestion. Methane is also released from human influenced sources such as landfill, agricultural activities, coal mining and other industrial practices which all contribute to todays climate change, according to the Environmental Protection Agency.The researchers estimate that earths sa

19、uropods would have produced about 520 million tons of methane per year similar to the total amount of methane produced today by natural and manmade sources. However, the researchers warn that their numbers are estimates based on multiple assumptions about the digestive systems and populations of din

20、osaurs.The author of the study David Wilkinson says the emission of methane from dinosaurs would have been just one of the causes of warm climate during the Mesozoic era.Other causes include gases produced from volcanoes, swamps, shallow seas and so on. Still, Wilkinson says，“ The amount of methane

21、from dinosaurs is large enough to have a measurable effect.”1.Scientists think dinosaurs may have led to the global warming because_.Athey ate everything they foundBthey usually had a good appetiteCthey released a lot of methaneDthere were too many dinosaurs on earth2What do we know about dinosaurs

22、from Paragraph 2?ASauropods fed on plants.BSauropods were of medium size.CDinosaurs used to live on trees.DDinosaurs digested food quickly.3How does the author make his writing reliable?ABy listing some facts.BBy making predictions.CBy citing figures.DBy using mind pictures.4David Wilkinson seems to believe that_.Amethane had little effects on the earthBmany other factors contributed to warm climateCother causes for warm climate were worth consideringDdinosaurs were mainly to blame for global warming