1、Pre-calss check!(steadily-plateau)1.steadily 2.massive 3.delicate 4.landmark 5.splendid 6.permafrost 7.Tibetan 8.antelope 9.leisure 10.at ones leisure 11.wetland 12.grassland 13.radiation 14.mirror-like 15.wander 16.scenery 17.plateauPeriod 1 Starting out&Understanding ideasLearning aims:1.By reciti
2、ng to master the important expressions;2.Using the techniques to summarize the main idea of each paragraph and the whole passage;3.Read the passage carefully to get to know the detailed information of the passage;4.By filling the blanks to further understand the general idea of the passage.Starting
3、outWhat nature can do to us humans?Nature can provide everything humans need to survive and live better.Nature is offering humans with fresh air to breath,clean water to drink and various food to eat.Its absolutely right that humans cant live without nature.Step 1：Leading-inStarting outWhat can we h
4、umans do to nature？People used to think:Current SituationUnfortunately,as mans desire expands,man asks for more and more from nature.As a result,the environment has been seriously polluted by chemical wastes from factories and sewage in cities.Farmland is also overwoked and has lost its fertility.An
5、d a variety of wild animals are being hunted and killed.Naturally,the consequences are that many species of plants and animals are disappearing from the earth and the balance of the nature is being upset.Now nature has taken revenge on man.It is clear that nature is full of power and man has the abi
6、lity to explore nature,to know nature and reform the nature but not the ability to conquer nature or control nature.Starting outHumans can explore nature.Starting outHumans can reform nature.Three Gorges DamStarting outHumans can appreciate nature.Uluru,AustraliaIguazu FallArgintina and BrazilStarti
7、ng outHumans can protect nature.The Sky RailwayUndesrtanding ideasStep2 Important expressions1.be about to do 10.stay healthy/fit2.work on 11.regular break3.play inside my head 12.a sense of pride4.ring inside my head 13.protect.from5.roof of the world 14.be close to6.a record of 15.reach out7.catch
8、 ones eye 16.bring.to life8.a total length of 17.attract ones admiration9.fly by/pass by 18.thank to1.将要做某事2.从事，致力于 3.在我脑海里播放 4.回响在我的脑海里5.世界屋脊6.的记录7.引起某人的注意8.的总长度9.飞过，飞逝/经过10.保持健康11.常规作息12.自豪感13.保护.免受14.接近，靠近15.伸出手去16.使.更有趣(生动)17.吸引.赞叹18.由于，幸亏Understanding idaesStep3:Read the passage and finish the
9、following exercises(leading paper)(10)1.Whats the authors purpose in writing the passage?A.To prove that humans can conquer nature.B.To highlight the amount of work required to build the Qinghai-Tibet Railway.C.To praise the workers efforts in building the Qinghai-Tibet Railway.2.Match the main idea
10、 to its paragraph.3.Organization of the passageT4 T5 T6 T7选做4.Why was theSky Railwayconsidered to be impossible?A.Because it was built in a place with too much radiation.B.Because it was extremely difficult to build this railway.C.Because too many bridges had to be built along the railway.D.Because
11、it was not easy to protect the workers.5.What did the railway workers consider most?A.How to protect the ecosystem along the railway.B.Their own safety while building the railway.C.The great number of bridges along the railway.D.Grasslands and wetlands along the railway.6.Whats the purpose of buildi
12、ng Qingshuihe Bridge?A.To prevent trains from falling into the river.B.To protect wetlands and grasslands.C.To allow the animals to move safely and freely.D.To protect permafrost and grasslands.7.What can we know about Tanggula Station from this text?A.It is the biggest station of the whole railway.
13、B.All the railway workers take their breaks here.C.Travellers usually breathe in some oxygen here.D.There exists high levels of UV radiation.Undesrtanding ideasOrganization of the passagePart 1:When considering overcoming the most difficult engineering challenges,how to protect the delicate ecosyste
14、m was among our top concerns.Part 2:The challenges and solutions.Part 3:We built the Qinghai-Tibet Railway with care that the environment desreves.Para 1-2Para 3-6Para 7Step 4 Intensive reading Finish Activity 4 on page64 Undesrtanding ideasChallengesSolutionsTo protect wild animals_have been built
15、under the railway to allow the animals to _To _675 bridges with _were built between Golmud and Lhasa.140,000 square metres of wetland were_ in order to protect its distinct ecosytemThirty-three passagesmove safely and freely in their natural habitatprevent damage to wetland and grasslandsa total len
16、gth of about 160 kilometerswere moved to a new areaUndesrtanding ideasChallengesSolutionsTo make sure the workers stay healthy._were constructed.The workers also enjoyed _ in lower areas.To _Thousands of thousands of sandbags were used to _ along the lake to _.Several oxygen-making stationsregular b
17、reaksprotect Cuona Lake from consttion wastebuild a twenty-kilometer wallprotect it from being polluted by construction wasteStep 5 Listen and repeat Requirement:Listen and repeat,and then read the passage loudly,underlining the doubts.Step 6 Filling-inSitting back in my seat,I travelled along the r
18、ailway that many foreign experts claimed was“impossible”.The train 1._ (race)along steadily since it left Xining.The Sky Railway is just like a massive dragon 2.(wind)among the mountains.3.(take)years to complete,the Qinghai-Tibet Railway is a record of our efforts 4.(overcome)the most difficult eng
19、ineering 5.(challenge).To prevent the animals,thirty-three passages 6.(build)under the railway.Besides,675 bridges with a total length of about 160 kilometres were built to prevent damage 7._ wetlands and grasslands.In order to make sure that the railway workers stay 8._ (health),several oxygen-maki
20、ng stations were constructed.With the train 9._ (pass),I saw Cuona Lake,10.lake with pale blue mirror-like surface.The lake is close to the railway.To prevent it from construction waste,we built a twenty-kilometre wall along the lake.The journey has been flying by and I am proud that we built our“impossible”Sky Railway.1.has been racing 2.winding 3.Taking 4.to overcome 5.challenges 6.were built 7.to 8.healthy 9.passing 10.aSee you next time
