题目内容
6.According to the US government,wind farms off the Pacific coast could produce 900gig watts of electricity every year.Unfortunately,the water there is far too deep for even the tallest windmills(see picture)to touch bottom.An experiment under way off the coast of Norway,however,could help put them anywhere.The project,called Hywind,is the world's first large-scale deepwater wind turbine(涡轮发电机).Although it uses a fairly standard 152-ton,2.3-megawatt turbine,Hywind represents totally new technology.The turbine will be fixed 213feet above the water on a floating spar(see picture),a technology Hywind's creator,the Norwegian company StatoilHydro,has developed recently.The steel spar,which is filled with stones and goes 328feet below the sea surface,will be tied to the ocean floor by three cable(缆索);these will keep the spar stable and prevent the turbine from moving up and down in the waves.Hywind's stability(稳定性)in the cold and rough sea would prove that even the deepest corners of the ocean are suitable for wind power.If all goes according to plan,the turbine will start producing electricity six miles off the coast of southwestern Norway as early as September.
To produce electricity on a large scale,a commercial wind farm will have to use bigger turbines than Hywind does,but it's difficult enough to balance such a large turbine so high on a floating spar in the middle of the ocean.To make that turbine heavier,the whole spar's to design a new kind of wind turbine,one whose gearbox(变速箱) sits at sea level rather than behind the blades (see picture )
Hywind is a test run,but the benefits for perfecting floating wind-farm technology could be extremely large.Out at sea,the wind is often stronger and steadier than close to shore,where all existing offshore windmills are planted.Deep-sea farms are invisible from land,which helps overcome the windmill-as-eyesore objection.If the technology catches on,it will open up vast areas of the planet's surface to one of the best low-carbon power sources available.
63.The Hywind project uses totally new technology to ensure the stability ofB.
A.the cables which tie the spar to the ocean floor
B.the spar which is floating in deep-sea water
C.the blades driven by strong and steady sea wind
D.the stones filled in the spar below the sea surface
64.To balance a bigger turbine high on a flatting spar,a new type of turbine is to be designed with its gearbox sittingC.
A.on the sea floor B.on the spar top
C.at sea level D.behind the blades
65.Wide applications of deepwater wind power technology canD.
A.solve the technical problems of deepwater windmills
B.make financial profits by producing more turbines
C.settle the arguments about environmental problems
D.explore low-carbon power resources available at sea.
分析 本文是一篇科普类说明文,介绍了风力涡轮发电Hywind也就是世界上第一个大规模的深水区风力涡轮发电机采用浮力风力发电技术,解决了因为海水太深,风车触及不到底部的问题,从而能够利用海洋上的风力发电,应用潜力巨大.
解答 63.B 细节理解.根据第二段倒数第三句"The steel spar,which is filled with stones and goes 328 feet below the sea surface,will be tied to the ocean floor by three cable(缆索);these will keep the spar stable and prevent the turbine from moving up and down in the waves"可知,该工程采用了全新的技术,是为了确保漂浮在深海水域中的圆材的稳定.64.C 细节理解.根据第三段最后一句"To make that turbine heavier,the whole spar's to design a new kind of wind turbine,one whose gearbox(变速箱) sits at sea level rather than behind the blades (see picture )"可知,为了使较大的涡轮发电机能在圆材上保持平衡,公司计划设计新的发电机,其变速箱在海平面上.
65.D 细节理解.根据最后一段最后一句"If the technology catches on,it will open up vast areas of the planet's surface to one of the best low-carbon power sources available"可知,深海风能技术的广泛应用可能会在海洋上开发出可使用的低碳能源.
点评 解答细节理解题时,一个常用的方法就是运用定位法,即根据题干和选项中的关键词从原文中找到相关的句子,与选项进行比较从而确定答案;推理判断题既要求学生透过文章表面文字信息推测文章隐含意思,又要求学生对作者的态度、意图及文章细节的发展作正确的推理判断,力求从作者的角度去考虑,不要固守自己的看法或观点.
A. | which | B. | what | C. | why | D. | where |
A. | in which | B. | which | C. | as | D. | in that |
A. | appeared | B. | appearing | C. | to appear | D. | being appeared |
I know.By next month,he__enough for a used one( )
A. | saves | B. | saved | C. | will save | D. | will have saved |