C

　　Elephantsarethelargestlandanimalsandtheyneedplentyoflivingspan.Theyhaveseasonalmigration(迁徙)routes.Ashumanpopulationsriseelephantlandisbeingclearedforagricultureandotherkindsofdevelopment.

　　Whenanimalsareeffectivelytrappedonsmallareasoflanditrestrictsthegenepoolandalsoresultsinashortageoffood.Whereelephantreserves(保护区)borderagriculturalareaselephantsareoftenattractedtoleaveparkstoattackcropsandbarns.Onlythestrongestwallswillstopanadultelephantsofarmershavegreatdifficultyprotectingtheirfields.

　　InIndiaelephantsdon’tonlyattackforfood.Someevenhavedevelopedatasteforricebeer.InAssamelephant-humanconflicthasresultedinthedeathofmorethan150peopleand200elephantsintwoyears.

　　Povertyleadstothekillingofelephantsformeat.Ifpeopledon’thaveenoughfoodandtheirgovernmentscannotaffordtoenforcepoaching(偷猎)bansit’snotdifficulttopredicttheoutcome.

　　Ivorycomesfromelephanttuskswhichcangrowtobe3metreslong.BothmaleandfemaleAfricanelephantshavelargetusks.

　　MostnewivorycomesfromAfricaandissoldasahighstatusmaterialinAsiancountriessuchasThailandmainlandChinaandJapan.Itcanfetch$150apoundandiscarvedtomakedecorationschopsticksandinkstamps(印章).Theconservationpriority(重点)hereistochangepublicattitudes.

　　InsomecountriesinsouthernAfricawhereconservationeffortshavebeensuccessfulthereisnotenoughroomforagrowingelephantpopulationandanimalshavetobekilled.ACITESmeetinginNovember2002ruledthatBotswanaNamibiaandSouthAfricamaysellstock-piled（库存的）ivorystartingin2004.

　　Manyconservationistsareconvincedthatthiswillfuelthedemandforivoryandleadtomoreillegalpoachingtheysayitisalmostimpossibletotelllegalfrompoachedivory.Thegovernmentsarguethatthesaleswillbeusedtofundconservationwork.

　　64.Whichofthefollowingisn’ttheresultofsmallerelephantland?

　　A.Seasonalmigration. B.Elephant-humanconflict.

　　C.Restrictingthegenepool. D.Shortageoffood.

　　65.Themostimportantthingtoprotectelephan