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1、TheChangesinGreatNaturalDisastersWorldwide1.简述所给图表中的变化。2.说明引起变化的主要原因。3.分析这些变化对全球的影响。Ascanbeseenfromthegraph,therehavebeenrapidchangesinthegreatnaturaldisastersworldwideoverthepastperiodfrom1960sto1990s.Tobeconcrete,therewereonly16terriblenaturaldisaster
2、s,causing300,000deathsin1960swhiletheratioswentuprespectivelyto131and1,100,000in1990s.Thechangesaredisturbing,therefore,itisnecessaryforustogointothewhysandwhereforesofthemfirst.Somechanges,suchasthoseinearthquakesandvolcaniceruptions,resultfromthemovem
3、entofplatesalongtheweaknessesintheearth’scrust,however,manyothershavemuchtodowithman’sactivities.Inthefirstplace,man’smindlessandexcessiveexploitationofnaturalresourceshasdonealastingdamagetotheecosystem,onlytoinvitemorefloods,landslidesandmud-rockflows
4、.TherarefloodtowhichChinawassubjectedin1998istypicaloftheevilseedsmanhadsowedforhimself.Inthesecond,inordertofeedtheirmoreandlargerfamilies,peoplefromallovertheworldhavehadtooverworktheirfarminglandaswellastheirgrassland,whichinturnhasacceleratedthedese
5、rtificationofthelandonwhichtheyhavebeenrelyingforexistence.Inthethird,man’sblindapplicationofscientificfindingshascausedunfavorableandpermanentchangesinthegloballivingenvironment.Amongthesechangesarethedepletionofozonelayer,theworseningofgreenhouseeffec
6、t,therecurrenceofhurricanesandtheextinctionofmorespecies.Thelistofcausescouldgoon,buttheyarealreadyenoughtoindicatethatthesechangesareproducingmoreandmorenegativeeffectsontheworld.Theyhavenotonlymadeitimpossibleforthenaturalsystemstorecovertheirbalanceb
7、utalsomadeitharderformantoensurehisbettersurvival.Ifallowedtorunitscourse,Iamafraid,thistrendwillcertainlybringmoreseriousthreatstoallthelivingthingsontheEarth,mankindincluded.WhatCausesaBoominCelebratingForeignFestivals1.近几年大学校园出现了一股过洋节热。2.阐明导致该现象的原因。3
8、.分析该现象的社会影响。Believeitornot,theseyearshavewitnessedaboomincelebratingforeignfestivalsontheChinesecampus.Accordingtoanofficialreport/survey,youngpeople,especiallycollegestudents,areshowingmoreandmoreinterestinsuchfestivalsasValenti
