Isitpossibletopersuademankindtolivewithoutwar?Warisanancientinstitutionwhichhasexistedforatleastsixthousandyears.Itwasalwaysbadandusuallyfoolish,butinthepastthehumanracemanagedtolivewithit.Moderningenuity(创造力)haschangedthis.EitherManwillabolishwar,orwarwillabolishMan.Forthepresent,itisnuclearweaponsthatcausethemostseriousdanger,butbacteriologicalorchemicalweapons,maybeforelong,offeranevengreaterthreat.Ifwesucceedinabolishingnuclearweapons,ourworkwillnotbedone.Itwillneverbedoneuntilwehavesucceededinabolishingwar.Todothis,weneedtopersuademankindtolookuponinternationalquestionsinanewway,notascontestsofforce,inwhichthevictorygoestothesidewhichismostskillfulinkillingpeople,butbyarbitration(调解)inaccordancewithagreedprinciplesoflaw.Itisnoteasytochangeveryoldmentalhabits,butthisiswhatmustbeattempted.Therearethosewhosaythattheadoptionofthisorthatideologywouldpreventwar.Ibelievethistobeabigerror.Allideologiesarebasedondogmatic(教条式的)statementswhichare,atbest,doubtful,andatworst,totallyfalse.Theiradherentsbelieveinthemfanatically(狂热地)thattheyarewillingtogotowarinsupportofthem.Themovementofworldopinionduringthepastfewyearshasbeenverylargelysuchaswecanwelcome.Ithasbecomeacommonplace(老生长谈)thatnuclearwarmustbeavoided.Ofcourseverydifficultproblemsremainintheworld,butthespiritinwhichtheyarebeingapproachedisabetteronethanitwassomeyearsago.Ithasbeguntobethought,evenbythepowerfulmenwhodecidewhetherweshallliveordie,thatnegotiationsshouldreachagreementsevenifbothsidesdonotfindtheseagreementswhollysatisfactory.Ithasbeguntobeunderstoodthattheimportantconflictnowadaysisnotbetweendifferentcountries,butbetweenManandtheatombomb.1、Thispassageimpliesthatwarnowis_________A.asnecessaryasinthepastB.asbadasinthepastC.notsodangerousasinthepastD.worsethaninthepast2、InthesentenceTodothis,weneedtopersuademankind...(Line6,Para.1),hisrefersto_________A.abolishingwarB.improvingweaponsC.solvinginternationalproblemsD.livingapeacefullife3、FromParagraph2,welearnthattheauthorofthepassage____A.isasupporterofsomemodemideologiesB.doesnotthinkthattheadoptionofanyideologycouldpreventwarC.believesthattheadoptionofsomeideologiescouldpreventwarD.hasnodoubtaboutthetruthofanyideologies4、Thelastparagraphsuggeststhat_________A.internationalagreementscanbereachedmoreeasilynowB.manbeginstorealizethedangerofnuclearwarC.nuclearwarwilldefinitelynottakeplaceD.worldopinionwelcomesnuclearwar5、Accordingtotheauthor,_________.A.waristheonlywaytosolveinternationaldisputesB.warwillbelessdangerousbecauseoftheimprovementofweaponsD.warmustbeabolishedifmanwantstosurviveC.itisimpossibleformantolivewithoutwarAusefuldefinitionofanairpollutantisacompoundaddeddirectlyorindirectlybyhumanstotheatmosphereinsuchquantitiesastoaffecthumans,animals,vegetation,ormaterialadversely(有害地..Airpollutionrequiresaveryflexibledefinitionthatpermitscontinuouschange.WhenthefirstairpollutionlawswereestablishedinEnglandinthefourteenthcentury,airpollutantswerelimitedtocompoundsthatcouldbeseenorsmelled—afarcry(悬殊的差别.fromtheextensivelistofharmfulsubstancesknowntoday.Astechnologyhasdevelopedandknowledgeofthehealthaspectsofvariouschemicalshasincreased,thelistofairpollutantshaslengthened.Inthefuture,evenwatervapor(水蒸气)mightbeconsideredanairpollutantundercertainconditions.Manyofthemoreimportantairpollutants,suchassulfuroxides,carbonmonoxide,andn...