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阅读理解Howcanwegetridofgarbage?Dowehaveenoughenergysourcestomeetourfutureenergyneeds?Thesearetwoimportantquestionsthatmanypeopleareaskingtoday.Somepeople
更新时间:2024-04-20 20:54:05
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(1)

阅读理解

Howcanwegetridofgarbage?Dowehaveenoughenergysourcestomeetourfutureenergyneeds?

Thesearetwoimportantquestionsthatmanypeopleareaskingtoday.Somepeoplethinkthatmenmightbeabletosolvebothproblemsatthesametime.Theysuggestusinggarbageasanenergysource.

Foralongtimepeopleburiedgarbageordumpeditonemptyland.Nowemptylandisscarce.Butmoreandmoregarbageisproducedeachyear.Butgarbagecanbeagoodfueltouse.Thethingsingarbagedonotlooklikecoalpetroleumornaturalgas;buttheyarechemicallysimilartothesefossilfuels.Asweuseupourfossil-fuelsupplieswemightbeabletousegarbageasanenergysource.

Burninggarbageisnotanewidea.SomecitiesinEuropeandtheUnitedStateshavebeenburninggarbageforyears.Theheatthatisproducedbyburninggarbageisusedtoboilwater.Thesteamthatisproducedisusedtomakeelectricityortoheatnearbybuildings.InParisFrancesomepowerplantsburnalmost2millionmetrictonsofthecity’sgarbageeachyear.Theamountofenergyproducedisaboutthesameastheworldproducedbyburningalmostahalfmillionbarrelsofoil!

Butthereareproblemsinusinggarbageasafuel.Garbagethatburnseasilysuchasfoodscrapsandpapermustbeseparatedfrommetalsglassandothermaterialsthatdonotburneasily.Thisseparationprocessisnormallycostly.Anotherproblemisthatburninggarbagecanpollutetheair.

Ourfossilfuelsuppliesarelimited.Burninggarbagemightbeonekindofenergysourcethatwecanusetohelpmeetourenergyneeds.Thismethodcouldalsoreducetheamountofgarbagepilingupontheearth.

Whattwoproblemscanbesolvedbyburninggarbage?

[]

A.

Theshortageofenergy;Airpollution.

B.

Theshortageofenergy;theshortageofemptylandforholdinggarbage.

C.

何敬文回答:
  答案:1.B;2.C;3.D;4.C;
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