高中英语阅读理解专题训练(6)-高中课件精选 7页

（广东专版每篇5小题）（第6套）第一节：阅读理解（共15小题；每小题2分，满分30分）阅读下列短文，从每题所给的A、B、C和D项中，选出最佳选项，并在答题卡上将该项涂黑。A(words:332&211)Microwavesmaybegreatatwarmingupfood,butwhataboutwarmingpeople?Usingmicrowavestodirectlyheatownersofaroomwouldsavemuchoftheenergywastedbyheatingwallsandfurniture.Anddespitepopularideasaboutmicrowaves,thistechniquewouldbesafe,accordingtoCharlesR.BurlieroftheMicrowaveResearchCenterinMarlborough,NewHampshire.Low-powermicrowavesonlypenetrate(贯穿)theskin(low-powermicrowavepenetrationinahamisabout0.2inches,forexample)andwithnonegativeeffects.Totestthisidea,Bufflersubjectedhimselftomicrowavesinaspecialroomusingastandard500-watt,2459MHzmagnetron(磁控管).Hefoundthatapersonwillstarttofeelwarmthatabout20milliwattspersquarecentimeter(mw・/sq.cm.);asatisfactoryfeelingofwarmthoccursbetween35and50mw・/sq.cm.Bycomparison,apersonstandinginnoondaysummersunfeelstheamountof85mw./sq.cm.Andafrozenmeatpieinyourmicrowaveovenreceivesabout1000mw./sq.cm.Inhousesofthefuture,eachroomcouldbeprovidedwithitsownmagnetron,saysBuffle匚Whenyousteppedintothelivingroom,forexample,amotiondetector(运动感应器)wouldturnonthemagnetron,fillingtheroomwithlow-powermicrowaves.Inthesamewaythatamicrowaveovenheatsupahamburger,butnottheplateit'son,youwouldfeelwarmthfromthemicrowaveswithoutchangingthetemperatureofyourcoffeetable.(Youcould,however,makeyourfavoriteeasychairevenmorecomfortablebytreatingitwitharadiation-absorbingchemical.)Whileitmightbesometimebeforehomeownersarecomfortableenoughwiththeideatosetupwhole-bodymicrowaveheatersinhouses,Bufflersaysmicrowavesmayattractlivestock（家畜）\nfarmers