Unlock419春知识清单第4讲Unit8lesson4

1、小学而思I 曼益一生的能打2019春国际体系Unlock4第4讲Unit 8 Lesson 4知识清单Unlock your knowledge1. When and who invented cars?The first car was the Benz Patent - Motorwagen, invented by Carl Benz in 1886, but cars only started to become a popular means of transport after the launch of Henry Ford ' s Model T in 1908.2.

2、Does China use hydroelectric power? If so, where?1. China's Three Gorges Dam project三峡水电站2. Yellow River Xiao Langdi water control project黄河小浪底水电站3. The Yellow River Wan Guzhai water conservancy hub project山西力家寨水利枢 纽工程4. Liaoning Baishi reservoir project辽宁白石水库3. What other ways is electricity ge

3、nerated in China?Wind, geothermal, solar, biomass 4. What are the benefits of hydroelectric power compared with other sources of energy?inexhaustibleenergy can be stored and used when demand is high5. Can you think of ways to reduce energy consumption at home?turn off lights when not usinguse energy

4、 efficient light bulbsrecycle waterVocabulary1. declined?da?nn.减少a gradual decrease in somethingHome cooking seems to be on the/in decline (= not so many people are doing it).2. generationd?en. ?re?nn.（能源的）产生the production of energy in a particular formGeneration of electricity from wind and wave po

5、wer can be highly effective.3. sources?sn.来源the origin or place something comes fromRenewable sources of energy must be used.4. volume?v?l.ju?mn.总量the number or amount of something in generalIt's the sheer volume of traffic in the city that is causing the problems.5. potentialp?ten.?ln.潜在；可能性abi

6、lity for something to develop, achieve, or succeedThe region has enormous potential for economic development.6. challenge?t? l.?nd?n.挑战something that requires great effort to be done successfullyFinding a solution to this problem is one of the greatestchallenges faced by scientiststoday.7. capacityk

7、?p? s.?.tin.生产能力；生产量the total amount of something that can be producedThe generators each have a capacity of (= can produce) 1,000 kilowatts.8. element?el.?.m?ntn.兀素，部分a part of somethingList the elements that make up a perfect dinner party.9. function?f?k.?nn.功能the natural purpose of somethingThe f

8、unction of the veins is to carry blood to the heart.10. consumptionk?n's ?m(p) %?)nn.消耗量the amount eaten or usedAs a nation, our consumption of junk food is horrifying.11. environmentally-friendly?n.va?.r?n?men.t? l.i ?rend.liadj.环保的not harmful to the environmentTheir chief aim was to create som

9、ewhere that was asenvironmentally-friendlyaspossible.12. limitation?rn.?e?.?nn.制约，限制因素something that is not as good as it could beThis drug has one important limitation . Its effects only last six hours.13. drawback?dr?.b?kn.缺点a disadvantage or the negative part of a situationOne of the drawbacks of

10、 living with someone is having to share a bathroom.14. energy-efficient?en.?.d?i.?ntadj.节能的using little electricity, gas, etc.The thing that got us all thinking was,' OK, this is thsergy-fefficient house, butwho can afford it?15. complex?k?m.pleksadj.复杂的involving a lot of different but related p

11、artsThis project involves a lot of complex technical problems.16. maintenance?me ?n.t?n.?nsn.维护the work needed to keep a road, building, machine etc. in good conditionOld houses need a lot of maintenance .17. experimental?k?sp?r?n?nt?ladj.实验性的relating to test, especially scientific onesThe drug is s

12、till at the experimental stage (= is still being tested).18. network如et.w ?kn.网络a system of parts that work togetherLos Angeles-based Univision is a Spanish-language broadcast televisionnetwork .19. reservoir?ez. ?.vw a ?rn.水库；蓄水池a lake that is used for storing water before it is supplied to peopleT

13、he benefit which the reservoir brings to the villagers is not limited to agriculture.20. generator%？en.?r.e?.t?rn.发电机a machine that produces electricityThe house is far from water mains and electricity and relies on its owngenerators .21. turbine?t?.ba?in.涡轮机a machine or engine which uses a stream o

14、f air, gas, water, or steam to turn a wheeland produce powerThe new ship will be powered by two gasturbines and four diesel engines.22. pipepa ?pn.管子a tube through which a liquid or gas flowsThe liquid can't escape into the air, because it's inside apipe .23. shaft?a?ftn.轴a rod in an engine

15、or machine that turns to pass power on to another part of the machinethe drive shaft of a car24. tower'ta?n.塔，发射塔a tall, narrow structureTroops are still in control of the television and radiotower .Compound words复合词语quickly-formedadj.快速形成的energy-independentadj.能源自给自足的long-termadj.长期的short-terma

16、dj.短期的environmentally-friendlyadj.环保的low-energyadj.低能耗的air-conditioningn.空调small-scaleadj.小规模的Connecting ideas between sentencesGiving extra informationComparing and contrastingExplaining a resultWhat's more, In addition, Moreover, FurthermoreOn the other hand, Even so, Neverthelessso, as a resu

17、lt, thereforePersuasive TechniquesTechniquesExampleschallenging a pointThe fact is, both systems Zara mentioned are technically complex and expensive to install.asking a questionWhy don' t we consider an alternative energy source?reassuringI can assure you that the company wouldn' t do anyth

18、ing unsafe or illegaladding informationThere are other considerations. We d have to look at the generating capacity of the systems.expressing reservationsI can ' t help but feel that a solar energy project would be too ambitious.Collocations for Networks and Systemsbiggest, face a, meet a, great

19、est, present achallengefaced, aheade.g. For human beings, the biggest challenge ahead is the shortage of fossil fuels.renewable alternative, main, primary （主要的）,reliable （可靠的）sourceof energy/ powere.g. Some environmentalists insist that hydropower.the most reliable source of power would bespare （备用的

20、，闲置的），storage （储存）， increasecapacityof X litrese.g. The reservoir can provide storage capacity of waterof 10,000 litres .national, extensive （ 广阔的）networksystemse.g. One of the important features of developed countries is of electricity.extensive network systemskey, essential, important, crucial, ba

21、sic, criticalelementof Xe.g. The most essential element of geothermal energyis the heat from underground.sheer （sheer volume:大量），sales, large, total, increasevolumeof transactions （ 交易）,increasede.g. With the advent of globalization, the countries can be witnessed by all.sheer volume of transactions between differentperform a, normal, primary （主要的）,func