共享题干题 （一）Pathways to Research: Problem-solving 回答下列问题：（1）Pittsburgh's many hills aren't kind to bikers. Anyone hoping to pedal to work there has to contend with steep streets like Canton Avenue, which famously climbs at a nearly 40-degree angle. As a result, some residents avoid biking altogether.（2) But University of Pittsburgh graduate Micah Toll, 23, and a few friends recently launched an invention that they hope will increase the city's pedal power. An electric bike called to Pulse PEVO. A super-strong battery powers the bicycle. Able to hit nearly 20 miles per hours without pedaling, it zips battery powers the bicycle. Able to hit nearly 20 miles per hour without pedaling, it zips up the city's most daunting(令人却歩的 )hills. Toll hopes it will persuade people in Pittsburgh and elsewhere to get out of their cars and onto bikes.(3)If it sounds like Toll has a knack( 窍门 ) for fixing problems, that's because he does. In high school, he designed a new type of construction beam. It weights no more than a feather pillow but can be used to builds turdy( 坚固的 )homes. for refugees fleeing war or natural disaster. For his work, Toll was invited to attend the Inter International Science and Engineering Fair(ISEF)--twice, in 2006 and 2007. The annual petition for young researchers is program of Society for Science&the Public(that's the parent organization of Science News for Kids). Toll says that when it es to science, he keeps it simple : "You see a problem and say, "Howcould I solve that?"(4) He's not the only to take that approach. Many young researchers get their start by trying to solve a problem or fulfill a need in their own munities. When students dedicate themselves to finding a solution that many benefit their munity, "a passion is ignited( 点燃 ), " says Wendy Hawkins, executive director of the Inter Foundation, which sponsors Intel ISEF. "Finding that passion and fostering it can be the key to many students future success." she says.1.[不定向选择题]Paragraph 2__________A.Intel International Science and Engineering Fair B.The enthusiasm for solving problem C.The young researchers' passion D.An invention increasing pedal powerE.Why people avoid biking in PittsburghF.The cause of national disasterABCDEF确定 2.[不定向选择题]Many young researchers are finding solutions to problems that may__________.A.a nearly 40-degree angle B.get on bike C.a feather pillow D.fix more problemE.a super-strong batteryF.benefit their munityABCDEF确定
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1.参考答案：D
参考解析：第二段讲到但米迦匹兹堡大学毕业生Micah Toll，23岁，和几个朋友最近推出了一项发明，他们希望将增加城市的踏板动力。电动自行车被称为脉冲PEVO。自行车装有超强电池。不用踩踏板能够达到近20英里每小时，它用电池给自行车增加。不用踩踏板能够达到近20英里每小时，它给城市最令人望而生畏的山增加了乐趣。人数希望它将说服人们在匹兹堡和其他地方从汽车出来，使用自行车。因此，D选项“一项提高踏板动力的发明”符合文意。
2.参考答案：F
参考解析：根据第四段第三句话“When students dedicate themselves to finding a solution that many benefit their munity。”可知，当学生专注于寻找解决方案，也让他们的社区受益。所以本题选F。3.[不定向选择题]Toll hopes his Pulse PEVO will encourage people to__________A.a nearly 40-degree angle B.get on bike C.a feather pillow D.fix more problemE.a super-strong batteryF.benefit their munityABCDEF确定