1、Unit 6 Nurturing natureUnit 6 Nurturing natureS e c t i o n A U n d e r s t a n d i n g i d e a sS e c t i o n A U n d e r s t a n d i n g i d e a sPre-class1.World Heritage Sites _2.put_ operation 投入使用3.pass_经过世界遗产into by4.be about to do sth._5.race along_平稳行驶6.roof of the world_正要做某事steadily世界屋脊7.
2、_克服挑战8.protect the _ecosystem保护脆弱的生态系统9.among the top_高度重视的问题之一overcome the challengesdelicateconcerns10._ones leisure 空闲时11.(be)unaware that/of._12.speed past_（此处speed用作动词，意为“加速，快速移动”）at未意识到快速经过；快速驶过While-class1 Which is the highest railway in the world?a The Trans-Siberian Railway.b The Qinghai-Ti
3、bet Railway.c The Chengdu-Kunming Railway.2 In which year was the completed Qinghai-Tibet Railway put into operation?a 1984.b 2001.c 2006.a Lhasa.b Golmud.c Lanzhou.a Xinjiang Tianshanb Qinghai Hoh Xil.c South China Karst.The author has worked on the Qinghai-Tibet Railway.Once believed impossible,th
4、e highest railway in the world is a record of the efforts of the workers to overcome the most difficult engineering challenges.These efforts and their end results mean that the railway is special to the author.ChallengesSolutionsTo protect wild animals.1 _have been built under the railway to allow t
5、he animals to 2 _To 3 _675 bridges with 4 _were built between Golmud and Lhasa.140,000 square metres of wetland were 5 _ in order to protect its distinct ecosystem.Thirty-three passagesmove safely and freely in their natural habitatprevent damage to wetlands and grasslandsa total length of about 160
6、 kilometresmoved to a new areaTo make sure the workers stayed healthy 6_ were constructed.The workers also enjoyed 7 _ in lower areas.To 8 _Thousands and thousands of sandbags were used to 9 _along the lake to 10 _Several oxygen-making stationsregular breaksprotect Cuona Lakebuild a twenty-kilometre
7、 wallprotect it from construction wasteAfter-class1 Which of the solutions are you most impressed by?Why?2 Which words in the passage are used to describe the Qinghai-Tibet Railway?What other words could you think of to describe it?Sky Railway,impossible,highest,extraordinary.You can also say it is a miracle,great achievement,etc.3 What changes do you think the Qinghai-Tibet Railway has brought to the people living along the railway?4 What method did you use to collect information?How did the information help you to better understand the passage?
