1、4.Whatarethecausesofwaterscarcity?WhatareyoursolutionNotalwaysdoesgoodnewscomealone.WhileNASAhasreportedlyfoundtheevidencethatliquidwaterdidonceexitonMars,thewaterissueonanotherplanet,theearth,shouldnotbeneglected.Itiswidelynotedthatthewaterresourceonourhomeplanetisbecomingincreasinglyscarceinrecent

2、years,and,diversecontributingfactorscanbeidentifiedbehindit.Inthefollowing,Ishallexplorethepossiblereasonsforitandpresentmypersonalsuggestionstowatershortage.Themostobviousreasonisthegrowingtrendofoverpopulationinmajorcitiesaroundtheworld.Withtheirpopulationskyrocketingtoanunprecedentedlevelofover1-

3、millioninsomegiantcitiessuchTokyo,Shanghai,andMexicoCity,theurbaninfrastructureisoftenhard-pressedtocopewiththeproblemofprovidingcleanwatertocitydwellers.Moreover,inanattempttoprovideadequatefoodsuppliestotheirhugepopulations,manydevelopingcountriesareundergoingalarge-scaleagriculturalexpansionthatr

4、equiressignificantlymorewaterresourcesforirrigationandlivestockfarmingthanbefore.Also,waterasanessentialcomponentoftheirproductionisincreasinglydemandedbyvariousindustries,suchasfabric,chemistryandmanufacturing.Otherreasonsthatresultinaglobaldearthofwatersuppliesincluderampantdeforestation,encroachi

5、ngdesertificationandcontaminationofrivers,lakesandundergroundwater.Facedwiththisdauntingchallenge,thefirstpriorityisforgovernmentstoadjusttheireconomicpolicies,promotesustainabledevelopmentandstopdamagingthenaturalenvironment.Besides,ThirdWorldcountriesneedtolaunchnationwidecampaignstoadvocatetheben

6、efitsofbirthcontrolandeducatecitizensontheuseofcontraceptivedevices.Also,thepublicsecologicalawarenessshouldberaisedtoahigherlevelwherepeopleofallagescanunderstandtheutmostimportanceofpreservingnaturalresourcesandswitchaccordinglytomoreenvironmentallyfriendlywaysoflife.Inaddition,everyfamilycanbeenc

7、ouragedtoreusewaterwithinthehousehold.Forexample,inmostAsiansocietieswherericeisthestaplefood,thewaterusedaftercleaningricecontainsvariousnutrientsforplantgrowthandisanexcellentdetergenttoflushthetoilet.Furthermore,theintriguingideaofconvertingtheinexhaustibleseawatertofreshwatersupplieswillbetheult

8、imatesolution.unprecedentedAnpresidntidadj.前所未有的，無前例的Theaircrashcausedanunprecedentednumberofdeaths.這次空難的死亡人數(shù)是空前的。infrastructureinfrstrAktjn.基礎(chǔ)設(shè)施；基礎(chǔ)結(jié)構(gòu)Vastsumsareneededtomaintaintheinfrastructure.保養(yǎng)基礎(chǔ)設(shè)施需要巨額款項(xiàng)。dwelldwelvi.居住，住Thosetwomenaredwellingwithus.那兩個(gè)人跟我們住在一起。undergoAndguvt.經(jīng)歷,承受Heunderwentalot

9、ofhardshipsinhischildhood.他在童年時(shí)代經(jīng)歷了許多坎坷。livestocklaivstokn.家畜,牲畜Atthecountyfairlastyear，prizesweregivenforthebestfarmproductsandlivestock.在去年全縣交易會(huì)上,最好的農(nóng)產(chǎn)品和家畜都得了獎(jiǎng)。componentkmpunntn.成分，組成部分，部件，元件fabricf氏brikn.（毛，絲）織物，布silkwoolenfabrics絲毛織品fabricgloves毛線手套manufacturem氏njuf氏ktJvt.制造;捏造Itismanufacturedby

10、hand.這是手工制造的。Shemanufacturedafalsestorytohidethefacts.她編了一段謊話來掩蓋事實(shí)。n.制造;制造品，產(chǎn)品Theymakemanufacturesfromtheirownrawmaterials.他們用自己的原料制造產(chǎn)品。dearthdn.缺乏，稀少;饑荒Thereisadearthofgoodchildrensplays.adearthoffoodintimeofdearth目前缺少優(yōu)秀的兒童劇。糧食缺乏饑荒時(shí)候rampantr氏mpntadj.（尤指疾病，社會(huì)弊端）猖獗的；無法控制的Sicknesswasrampantintherurala

11、reasofthiscountry.這個(gè)國家的農(nóng)村地區(qū)疾病流行。deforestationdiforistei/nn.采伐森林，森林開伐desertificationditifikei/nn.沙漠化encroachinkrutjvi.侵犯;侵占；侵害Hisnewfarmbuildingsencroachedonhisneighboursland.他的新農(nóng)場(chǎng)建筑侵占了鄰居的土地。dauntingadj.使人畏縮的advocate氏dvkeitvt.提倡,主張Idontadvocatedoingsuchthings.我不主張干這樣的事情。contraceptivekontrseptivadj.避孕

12、的，避孕用的n.避孕藥,避孕用具ecologicaleklod3ikladj.生態(tài)學(xué)的,社會(huì)生態(tài)學(xué)的utmostatmustadj.極度的，最大的，最遠(yuǎn)的Withoutproblem，theutmostproblem.沒有問題是最大的問題。n.極限，最大限度ThatistheutmostthatIcando.我最多只能做到那樣。accordinglyko:diliadv.照著，相應(yīng)地Pleaseinformusofyourdecisionandwewillactaccordingly.請(qǐng)把你們的決定通知我們，我們會(huì)照著去辦的。Q因此，所以，于是Hewastoldtospeakbriefly;a

13、ccordinglyhecutshorthisremarks.人家叫他說話簡(jiǎn)短，于是他就長(zhǎng)話短說了。householdhaushuldn.Q集合詞家屬，家眷；家庭,一戶Q家務(wù)adj.家庭務(wù)的；普通的，家常的householdaffairs家務(wù)事staplesteipln.主要產(chǎn)品，大宗出產(chǎn);常用品Q2主食adj.主要的，大宗生產(chǎn)的;經(jīng)常用的，經(jīng)常需要的detergentdit:d3ntn.洗滌劑Herecommendedanewdetergenttome.他向我推薦一種新的洗滌劑。intriguingintri:giadj.引起好奇心的；令人感興趣的；有迷惑力的inexhaustibleinigzo:stbladj.無窮無盡的；用不完的Mypatienceisn