2.Researchers around the world have been trying their hand at making better use of the huge amount of wind energy available in nature to produce clean energy.Apart from this,studies are being carried out to harness(利用) usable wind energy produced by man-made technologies.
One useful source identified by Indian inventor Santosh Pradhan about two years ago is a speeding train,which produces fierce wind that can be transformed into electricity.
According to Pradhan's proposal,with a few small improvements in existing trains running in Mumbai,the largest city in India,at least 10,000megawatts(兆瓦) of electricity could be harvested each day.
Building on this principle,designers Ale Leonetti Luparinia and Qian Jiang from Yanko Design have created a device(裝置) called T-Box that harnesses wind energy from speeding trains.
T-Box can be placed within the railway tracks.It is half-buried underground between the concrete sleepers(水泥枕木),which does not disturb the normal train operating at all.According to Yanko,around 150T-Boxes can be fitted along a 1,000-meter railway track.
A train running at a speed of 200kph can produce winds blowing at 15miles a second.Based on this calculation,150T-Boxes can produce 2.6KWH of electricity per day.The T-Box's design won a silver medal in last year's Lite-On Awards and was exhibited last summer at the Xue Xue Institute in Taipei,Taiwan Province.
Though the figures look impressive,it is important to remember that the design is still at a conceptual stage and hasn't taken into account issues such as pieces of waste material produced by the device and the efforts and costs involved in the maintenance(維護(hù)) of the device.
We can expect the technology to see the light of the day only after it clears these issues.If so,rail travel,one of the greenest forms of travel,will become greener and more energy-efficient.

46.What can we learn about T-Box?B
A.It will be fitted on the trains.
B.It is based on Pradhan's idea.
C.It can turn electricity into light.
D.It was invented by an Indian scientist.
47.How much electricity can be produced per day by T-Boxes along a railway track of 100km?A
A.260KWH.
B.2.6KWH.
C.150KWH.
D.1.5KWH.
48.It can be concluded from the last two paragraphs thatC.
A.T-Box has proved to be effective in harvesting wind
B.the maintenance of T-Box will be costly
C.there is much to do about T-Box
D.T-Box will come into use soon
49.According to the passage,which of the following statements is TRUE?B
A.The Indian inventor Santosh Pradhan invented the speeding train.
B.The T-Box's design won a silver medal in Lite-On Awards last year.
C.Rail travel has become one of the energy-efficient technologies in the world.
D.The India harvests 10,000megawatts of electricity each day on average.
50.The passage is mainly written toD.
A.encourage more people to travel by train
B.explain the advantages of electricity
C.tell readers how to save energy and money
D.introduce a new invention to readers.

分析 本文屬于說(shuō)明文閱讀,作者通過(guò)這篇文章向我們敘述了Santosh Pradhan設(shè)計(jì)的T-Box 具有極好的性能,很多方面都令人印象深刻,還贏得了一枚銀牌光寶獎(jiǎng)并展出,但是設(shè)計(jì)還處于概念階段,還有很大的改進(jìn)空間.

解答 46.B.細(xì)節(jié)理解題.根據(jù)文章第四段"designers Ale Leonetti Luparinia and Qian Jiang from Yanko Design have created a device(裝置) called T-Box that harnesses wind energy from speeding trains",可知兩年前一個(gè)有用的源代碼被印度發(fā)明家Santosh Pradhan是一輛飛馳的列車,產(chǎn)生激烈的風(fēng),可以轉(zhuǎn)化為電能;故選B.
47.A.細(xì)節(jié)理解題.根據(jù)文章第六段"Based on this calculation,150T-Boxes can produce 2.6KWH of electricity per day",可知基于這樣的計(jì)算,可以產(chǎn)生150t盒每天發(fā)電2.6kwh;故選A.
48.C.推理判斷題.根據(jù)文章最后兩段"it is important to remember that the design is still at a conceptual stage and hasn't taken into account issues",這是要記住的設(shè)計(jì)還處于概念階段,還有沒考慮到的問(wèn)題,故選C.
49.B.細(xì)節(jié)理解題.根據(jù)文章第六段"The T-Box's design won a silver medal in last year's Lite-On Awards and was exhibited last summer at the Xue Xue Institute in Taipei,Taiwan Province."可知T-Box 的設(shè)計(jì)去年夏天在臺(tái)灣省臺(tái)北的薛院贏得了一枚銀牌光寶獎(jiǎng)并展出;故選B.
50.D.主旨大議題.通讀全文,文章主要講述了Santosh Pradhan設(shè)計(jì)的T-Box 具有極好的性能,因此應(yīng)選向讀者介紹一種新的發(fā)明;故選D.

點(diǎn)評(píng) 考察學(xué)生的細(xì)節(jié)理解和推理判斷能力,做細(xì)節(jié)理解題時(shí)一定要找到文章中的原句,和題干進(jìn)行比較,再做出正確的選擇.在做推理判斷題不要以個(gè)人的主觀想象代替文章的事實(shí),要根據(jù)文章事實(shí)進(jìn)行合乎邏輯的推理判斷.

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