Amachinethattakessweat-laden(浸满汗水的)clothesandturnsthesweatintodrinkingwaterisinuseinSweden.Themachinemakestheclothesturnroundquicklyheatsthemtoremovethesweatandthenpassesthesteamthroughakindofspecialmaterialtomakepurifiedwater(净化水).
Sinceithasbeenbroughtintouseitscreatorssaymorethan1000peoplehavedrunkothers’“sweat”inGothenburg.Theyaddtheliquidiscleanerthanlocaltapwater.
ThedevicewasbuiltfortheUnitedNations’child-focusedcharityUNICEFtopromoteacampaignhighlightingthefactthat780millionpeopleintheworldlackaccesstocleanwater.
ThemachinewasdesignedandbuiltbytheengineerAndreasHammarknownlocallyforhisappearancesonTVtechshow“Mekatronik”.HesaidthekeypartofthesweatmachinewasanewwaterpurificationpartdevelopedbyacompanynamedHVR.
“Itusesatechniquecalledmembranedistillation(膜蒸馏)”hetoldtheBBC.“Weuseaspecialkindofmaterialthatonlyletssteamthroughbutkeepsbacteriasaltsclothingfibersandotherthingsout.TheyhavesomethingsimilartotheInternationalSpaceStationbutourmachineischeapertobuild.Theamountofwateritproducesdependsonhowsweatythepersonisbutoneperson’sT-shirttypicallyproduces10mlaboutamouthful.”
ThedevicehasbeenputonshowattheGothiaCup-theworld’slargestinternationalyouthfootballtournament.MattiasRongechiefexecutiveofStockholm-basedadvertisingagencyDeportivosaidthemachinehadhelpedraiseawarenessforUNICEFbutinrealityhaditslimitations.
“Peoplehaven’tproducedasmuchsweataswehoped–rightnowtheweatherinGothenburgislousy”MattiasRongesaid.“Sowe’veequippedthemachinewithexercisebikesandvolunteersarecyclinglikecrazy.Evensothedemandforsweatisgreaterthanthesupply.Andthemachinewillneverbeproducedinlargenumberssincetherearebettersolutionsouttheresuchaswaterpurifyingpills.”[
Zx
28.UNICEFismentionedinthetextto________.
A.showhowthesweatmachineworks
B.telluswhoinventedthesweatmachine
C.showtheimportanceoftheUnitedNations
D.explainwhythesweatmachinewasinvented
29.Whichofthefollowingisthedis