C
Sometimes,thesimplestideasarethebest.Forexample,toabsorbheatfromthesuntoheatwater,youneedlarge,flat,blacksurfaces.Onewaytodothatistobuildthosesurfacesspecially,ontheroofsofbuildings.Butwhygotoallthattr oublewhencitiesarefullofblacksurfacesalready,intheform.ofasphalt(柏油)roads?
Tenyearsago,thisthoughtcameintothemindofAriandeBondt,aDutchengineer.Hefinallypersuadedhisbosstofollowitup.Theresultisthattheirbuildingisnowheatedinwinterandcooledinsummerbyasystemthatr eliesonthesurfaceoftheroadoutside.
Theheat-collectorisasystemofconnectedwaterpipes.Mostofthemrunfromonesideofthestr eettotheother,justundertheasphaltr oad.Some,however,divedeepintotheground.
Whenthestr eetsurfacegetshotinsummer,waterpumpedthroughthepipespicksupthisheatandtakesitundergroundthroughoneofthedivingpipes.Atadepthof100metr esliesanaturalaquifer(蓄水层)intowhichseveralheatexchangers(交换器)havebeenbuilt.Thehotwaterfromthestr eetr unsthroughtheseexchangers,warmingtheground-water,beforereturningtothesurfacethroughanotherpipe.Theaquiferisthususedasaheatstore.
Inwinter,theworkingsystemischangedslightly.Waterispumpedthroughtheheatexchangerstopickuptheheatstoredduringsummer.Thiswatergoesintothebuildingandisusedtowarmtheplaceup.Afterperformingthattask,itispumpedundertheasphaltanditsremainingheatkeepstheroadfreeofsnowandice.
64.Whichofthefollowingistr ueaccordingtothefirsttwoparagraphs?
A.AriandeBondtgothisideafromhisboss.
B.Large,flat,blacksurfacesneedtobebuiltincities.
C.TheDutchengineer'ssystemhasbeenwidelyused.
D.Heatcanalsobecollectedfromasphaltr oads.
正确答案：D
