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1、大家网·快乐的考研人系列点击访问2009考研英语每日能力提高班-阅读七选五强化训练（08年10月部分）大家网研英专区按辅导班进度定期发布（网络独家）2008年10月8日强化题IFYOUdropyourlaptopcomputer,achipbuiltintoitwillsensetheaccelerationandprotectthedelicatemovingpartsofitsharddiskbeforeithitstheground.AgroupofresearchersledbyJesseLawrenceofStanfordUniversity
2、areputtingthesameaccelerometerchiptoanintriguingnewuse:detectingearthquakes.（1）____________________Theyplantocreateanetworkofvolunteerlaptopsthatcanmapoutfuturequakesinfargreaterdetailthantraditionalseismometersmanage.Seismometersarelarge,expensivebeasts,costing$10,000ormoreapie
3、ce.Theyaredesignedtobeexquisitelysensitivetothesortofvibrationsanearthquakeproduces,whichmeanstheycanpickuptremorsthatbeganhalfwayaroundtheworld.(2)_______________________Theyare,however,ubiquitous.Almostallmodernlaptopshavethemandtheyareevenfindingtheirwayintomobilephones.TheiP
4、hone,forexample,usessuchachiptodetectitsorientationsothatitcanrotateitsdisplayandthusmakeiteasilyreadable.(3)__________________________Butiflotsofthesechipsareconnectedtoacentralserverviatheinternet,theirresponsescanbecompared.Andifalargenumberinaparticularplaceregisteravibratio
5、natalmostthesametime,itismorelikelytobeanearthquakethanabunchofusersallhittingtheirspacebars.Toexploitthisgroupeffect,DrLawrence’sQuake-CatcherNetwork(QCN)employsthesamesoftwarethatisusedbytheSETI@homeproject,whichaggregatescomputingpowerfromhundredsofthousandsofvolunteercompute
6、rsaroundtheworldtoanalyseradio-telescopesignalsforsignsofextraterrestrialintelligence.DrLawrenceandhiscolleagueshavealreadydemonstratedthattheQCNworks.ItdetectedaquakenearReno,Nevada,inApril,andonenearLosAngelesinJuly.Merelydetectingaquake,however,isnotthepoint.Seismometerscando
7、that.Tobeuseful,theQCNneedstobeabletodothingsthatseismometerscannot.Oneofthosethingsistomeasurethemaximumamountofgroundshaking.(4)__________________________Thepricepaidisthatinformationaboutstrong,nearbyearthquakesislost.Laptopaccelerometersaremorerobust.Thoughtheycannot,ifinAme
8、rica,tellyouanythingaboutanearthquakeinChina,th
