【Didyouknowthatvegetablescangrowintheclimatestheyarenotusedto?Coolclimatevegetableslikeasparagus(芦笋)arenowabletobegrowninplacesashotasHawaii.InHawaiimarine(海的)engineershavebeenabletoactuallyle】
Didyouknowthatvegetablescangrowintheclimatestheyarenotusedto?Coolclimatevegetableslikeasparagus(芦笋)arenowabletobegrowninplacesashotasHawaii.InHawaiimarine(海的)engineershavebeenabletoactuallyletyoubelievesuchvegetablesthattheyarelivingincoolerclimates.Inthatwaytheygrowfasterandtastebetter.Whattheseengineershavebeenusingisverysimplycoldseawater.Howdidtheyuseit?Theyplacepipesinthesoilandcoldwaterflowingthroughthemcoolstheearth.Thiscausesplantgrowthandenablesgardenersintropicalclimates(热带气候)togrowcropsfromcoolerclimates.Alsosomeofthesepipesareexposedtotheairandtheymaketheair“wet”andthuswaterthegardens.Whatespeciallymakespeoplehappyaboutthisprocess(过程)isthatnothingtothenaturalconditionsisbeingused.Anothernewuseforcoldoceanwateristocoolbuildings.EngineersbelievethatforexampletheentirewestcoastoftheUnitedStatescouldbeair-conditionedusingseawater.
72.Whatdoesthenewsystemenablethegardenerstodo?
A.Waterthefieldwithseawater. B.Growasparagusinhotplaces.
C.Growcoolclimatevegetablesinhotareas. D.Coolthesoil.
73.Seawatermentionedinthepassageismainlyusedto________.
A.waterthefarms B.waterthegardens
C.cooltheair D.maketheearthcool
74.Whatisthereportmainlyabout?
A.Howtogrowvegetablesinhotareas. B.Howtogrowcropsintropicalclimates.
C.Howtocoolthesoil. D.Howtouseseawater.
75.Itcanbeinferredfromthepassagethat________.
A.seawatercanactasanair-conditioner
B.asparagusareonlygrowninhotplaces
C.thewriterwantstotellussomethingaboutscientificadvance
D.seawaterhasmanyadvantages