单元综合检测(二)Unit2Theenvironment(时间：100分钟；满分：120分)Ⅰ.阅读理解(共15小题；每小题2.5分，满分37.5分)AResearchersatStanfordUniversityhavedevelopedanewmaterialthatcanmoveheatoutofbuildingsandintospace.Theresearcherssaythematerialcancoolbuildingsevenonhotdays.Thecoolingmaterialisaverythinsheetwithmanylayersthatcouldbeplacedonarooflikesolarpanels(板)．However,insteadofturningsunlightintoenergyassolarpanelsdo,thematerialturnsheatintoinfrared(红外线的)radiation.ShanhuiFanisanelectricalengineeringprofessoratStanfordUniversity.Hesaysthatthepanelshavealayerofmaterialthatislikesand.Thepanelsactlikeamirror.Theytakeheatoutofbuildingsandreflectthelightfromthesun.Andhesaysboththeheatandsunlightaresent100kilometersintoouterspace.It'sastructurethatcoolsitselfwithoutelectricityinput,evenunderthesun.So,whatitdoesisbasicallyradiateheattoouterspaceandalsoreflectthesunlightsoitdoesn'tgetheatedupbythesun.Mr.Fansaysitislikehavingawindowintospace.Theheatissentdirectlyintospacewithoutincreasingtheairtemperature.Hesaysbuildingsindevelopingcountriesthatdonothaveelectricityorairconditioningcouldusethepanels.“Inareaswhereelectricityisoutofreachformanypeople,thereisapotentialbenefitforstoringmedicineorevenfood.Inmanyofthesesituations,beingabletoreducethetemperatureisimportant.Andthiswouldprovideawaytodoit.”Theresearcherssaythemainproblemiscreatingactualcoolingsystemsusingthehigh­techpanels.Theysayitmaybepossibletodevelopacoolingspray(喷涂)thatcouldbeusedonpresentsolidstructures.Theybelievethecoolingspraytechnologycouldbedevelopedinthenextthreetofiveyears.Theysayasmuchas15percentoftheenergyusedintheUnitedStatesisspentprovidingpowertoairconditioningsystems.【语篇解读】本文介绍一种被用来使建筑物降温的新材料。这种新panel既环保又节能，它仍在研究中。1．WhatisthemainideaofParagraph1?A．Livingonhotdaysisnolongerabigproblemnow.B．Researchersaredevelopingnewsolarpanelsonroofs.C．Anewmaterialiscreatedtocoolthebuildings.D．Thenewmaterialisaverythinsheetwithmanylayers.C[段落大意题。根据第一段第一、二句“ResearchersatStanfordUniversityhavedevelopedanewmaterialthatcanmoveheatoutofbuildingsan