考前30天之備戰(zhàn)2012高考英語精品學(xué)案專題三閱讀理解 第二節(jié)閱讀理解梯度進(jìn)階訓(xùn)練(2)

1、第二節(jié)閱讀理解梯度進(jìn)階訓(xùn)練（2）Methanoneahalfbillionpeoplearoundthewldlivewithoutelectricity.FindingbetterwaystobringlighttothepoisthegoalofresearcherslikeDavidIrvineHalliday.Inthelate1990stheCanadianprofesswaswkinginNepalwhenhisretur

2、nflightwascancelled.AdelaygavehimtimetotakeafourteendayhikingtripintheHimalayas.Ashetellsitonedayhelookedinthewindowofaschoolnoticedhowdarkitwas.Thisisacommonproblemfmillionsofchildrenaroundthewld—notjustatschoolbutalso

3、athome.Manyfamiliesusekeroseneoillamps.Therearemanyproblemswiththeselamps.Theyproduceonlyasmallamountoflight.Theyaredangeroustobreathe.theyareabigfiredangercausingmanyinjuriesdeathseachyear.Kerosenecostslessthanotherfmso

4、flightingbutitisstillcostlyinpocountries.ProfessIrvineHallidaysaysmanypeoplespendwelloveronehundreddollarsayearonthefuel.WhenhereturnedtoCanadahebeganresearchingwaystoprovidesafecleanaffdablelighting.Hebeganexperimentin

5、gwithlightemittingdiodesLEDsathislabatyattheUniversityofCalgaryinAlberta.Asaprofessofrenewableenergyhealreadyknewaboutthetechnology.Lightemittingdiodesaresmallglasslampsthatusemuchlesselectricitythantraditionalbulbslas

6、tmuchlonger.ProfessIrvineHallidayusedaonewattbrightwhiteLEDmadeinJapan.HefounditontheInterconnectedittoabicyclepoweredgenerat.Heremembersthinkingitwassobrightachildcouldreadbythelightofasinglediode.Intwothousaftermuch

7、researchmanyexperimentshereturnedtoNepaltoputthesystemsintohomes.HisLightUptheWldFoundationhasnowequippedthehomesoftwentyfivethouspeopleinfiftyonecountries.Nowhisaimistodevelopalowercostlightingsystem.InJanuaryDavidIr

8、vineHallidayisleavingtheUniversityofCalgary.HehasalsodecidedtogiveupleadershipintheLightUptheWldFoundationtostartacompanyinIndia.()1.TherearemanyproblemswithkeroseneoillampsEXCEPT.B.Bringinglighttohomesinpocountries.C.W

9、hatProfessIrvineHallidaydidfthepo.D.LivingconditionsintheHimalayas.Killtwobirdswithonestone.一箭雙雕。詳解詳析詳解詳析這篇文章介紹了IrvineHalliday教授研制LED節(jié)能燈的起因及過程，還介紹了這位教授下一步的研究目標(biāo)。1.C細(xì)節(jié)理解題。文章第三段內(nèi)容介紹了煤油燈的危害，文章第四段第一句Kerosenecostslessthanoth

10、erfmsoflighting，…可知不是很昂貴。故選C。2.C推理判斷題。結(jié)合文章第四段和第五段的開頭可知IrvineHalliday教授研制該LED燈的主要目的。3.B細(xì)節(jié)理解題。根據(jù)文章第五段最后一句中的lastmuchlonger可知該燈壽命較長(zhǎng)。4.D推理判斷題。根據(jù)文章最后一段第一句Nowhisaimistodevelopalowercostlightingsystem.可以推斷出該教授正在研究的內(nèi)容。5.B主旨大意題。