高考英语素能提高题：unit2《theenvironment》（译林牛津版必修5）

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1、高考英语素能提高题：Unit2《Theenvironment》（译林牛津版必修5）Ⅰ.填词Forthosewhoareconcernedaboutpollution，cleanandrenewableenergysourcesthathelptoprotecttheenvironmentsuchassolarenergyarebecomingpossiblealternativestooilandcoal.Increasingdemandforclean，renewableenergydrivesagrowingmarketforsolarenerg

2、yproducts.Twoofthemaintypesofheatingproductsthattakeadvantageofsolarenergyarepassiveandactivesolarproducts.Thesetwotypesofsolarheatingsystemsdifferinhowtheyareconstructedandcanalsodiffergreatlyincost.Passivesolartechnologycanbeusedtoheatairorwaterdirectlyusingthesun’senergy.Unl

3、ikeanactivesolarapplication，passivesolarsetupsaccomplishtheirtaskwithouttheuseofadditionalelectricalcomponents，suchasfansthatneedanexternalelectricitysupply.Somesolarspaceheatingorwaterheatingsystemsareactivesolarheatingsystemsthathavevariouscomponentsthatrequireexternalpowerso

4、urces.However，theydon’tusethesolarenergydirectlytoheatairorwater.Becauseoftheirsimplicitycomparedwithactivesystems，passivesolarheatingsystemsgenerallyhavethelowercostofthetwo.Inadditiontothesesolarheatingsystems，therearealsosolarpowersystemsavailable.Ratherthanusethesun’senergy

5、forheatingapplications，thesesystemschangesolarenergyintoelectricity.Theseproductsareoftenconstructedfromhundredsofsolarenergycollectioncellscalledphotovoltaiccells，whichgenerateelectricityfromlight.Assunlightfallsonaphotovoltaiccell，thelight’senergyischangedintoelectricitythatc

6、anthenbeusedtopowermanykindsofelectronicdevices.Becauseofthecomplicatedtechnologyinvolved，thesekindsofsolarpowersystemscanbeveryexpensive.However，thecostsavingsmayeventuallymorethanpayoffyourinitialinvestmentinthesolarcells.Whenconsideringwhatkindofsolarheatingorpowersystemtoin

7、stallinyourhomeorbusiness，besurethatyouarepurchasingyourequipmentfromareputablemanufacturerwhowillbeabletohelpyouwithanynecessaryrepairs，andperiodicupgrades.Title：__1____2__clean__3__environmentallyfriendly__4____5__usingthesun’senergydirectly•without__6__•simpleLowercostActive

8、heatingproductsusingthesun’senergyindirectly•withcompo