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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 (食物搅拌器) 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 本文属于广告类阅读,作者通过这篇文章向我们介绍了一种特殊自行车以及它的多种便利.

解答 CBCA
68.C 细节理解题.由第一段"In fact,the two-wheeled machines make for…."可知改进自行车也可以成为科学项目,故选C.
69.B 判断归纳题.由第二段"the bike projects showed that some of the most interesting scientific research often….."可知仔细观察你所关心的东西能够导致科学研究,故选B.
70.C 词义猜测题.从词语的上下文来看,address在此处的意思是"从事于",即解决一个问题.故选C.
71.A 推理判断题.由三、四段和最后一段"More importantly,he added,the same concept could be used…."可知这辆特殊自行车的主要目的是能在偏远雨林地区发电用,故选A.

点评 考查学生的细节理解和推理判断能力.做细节理解题时一定要找到文章中的原句,和题干进行比较,再做出正确选择.在做推理判断题时不要以个人的主观想象代替文章的事实,要根据文章事实进行合乎逻辑的推理判断.

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