15.Bicycles are a great way to get around.They're fun to ride,especially down hills.And,as you speed along the road,you might also think of ways in which you could improve your bike-make it safer,more efficient,or more comfortable.In fact,the two-wheeled machines make for some cool science projects.
This year's Intel International Science and Engineering Fair (ISEF),held last May in Cleveland,featured (had) three bicycle projects from three countries.Like many of the other experiments presented at ISEF,the bike projects showed that some of the most interesting scientific research often begins by taking a closer look at things you care about.
Renato Angulo Chu had even greater ambitions.The 12th-grader from Lima,Peru,wanted to address some of his country's economic troubles,such as lack of electricity.
Renato,16,spent 3years designing his special Multi-bike,which looks like a fixed exercise bike but with lights ahead.It has wires fixed along the frame and a blender (食物攪拌器) fastened to the back.Turning the pedals operates the blender.The same principle can be used to sharpen knives or sweep city streets.
The Multi-bike can work either as a fixed bike or as a bicycle able to travel city streets and country roads."You pedal the bike,and you can mix any drink you want,"Renato said.More importantly,he added,the same concept could be used to bring light to houses in remote regions of the rainforest.

68.What can we learn from the first paragraph?C
A.Bicycles are the best way to go about
B.Bikes should be made more comfortable to ride.
C.You can improve your bicycle for science research.
D.Many inventions are connected with the bicycle.
69.Which of the following is true according to the passage?B
A.ISEF is an exhibition displaying bicycle experiments.
B.Looking closely at things can lead to scientific research.
C.Renato's work has solved the country's great problem.
D.Renato's bicycle will soon be put into use in remote areas.
70.The underlined word"address"in the third paragraph probably has the same meaning asC.
A.have addresses written    B.give up   C.work at    D.speak about
71.It can be inferred that Renato's special bicycle is mainly designed forA.
A.distant areas in the rainforest without electricity.
B.the use of his own family to make life easier.
C.winning money to support remote rainforests
D.getting enough exercise by pedaling it.

分析 本文屬于廣告類閱讀,作者通過(guò)這篇文章向我們介紹了一種特殊自行車以及它的多種便利.

解答 CBCA
68.C 細(xì)節(jié)理解題.由第一段"In fact,the two-wheeled machines make for…."可知改進(jìn)自行車也可以成為科學(xué)項(xiàng)目,故選C.
69.B 判斷歸納題.由第二段"the bike projects showed that some of the most interesting scientific research often….."可知仔細(xì)觀察你所關(guān)心的東西能夠?qū)е驴茖W(xué)研究,故選B.
70.C 詞義猜測(cè)題.從詞語(yǔ)的上下文來(lái)看,address在此處的意思是"從事于",即解決一個(gè)問(wèn)題.故選C.
71.A 推理判斷題.由三、四段和最后一段"More importantly,he added,the same concept could be used…."可知這輛特殊自行車的主要目的是能在偏遠(yuǎn)雨林地區(qū)發(fā)電用,故選A.

點(diǎn)評(píng) 考查學(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,再做出正確選擇.在做推理判斷題時(shí)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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