题目内容：
根据以下材料，回答题Africanelephantshavebeenslaughteredatalarmingrateoverthepastdecade,largelybecausetheyaretheprimarysourceoftheworld'sivory.Theirpopulationhasbeendwindledfrom1.3million
in1979tojust625000today,andtherateofkillinghasbeenacceleratinginrecentyearsbecausemanyoftheolder,biggertuskedanimalshavealreadybeendestroyed."Thepoachersnowmust
killtimesasmanyelephantstogetthesamequantityofivory."explainedCurtisBohlen,SeniorvicepresidentoftheWorldWildlifeFund.
Thoughitsrecordontheenvironmenthasbeenspottysofar,thegovernmentlastweektooktheleadinamajorconservationissuebyimposingabanonivoryimportsintotheUS.Themovecame
justfourdaysafteraconsortiumofconservationgroups,includingtheWorldWildlifeFundandWildlifeConservationInternational,calledforthatkindofaction,anditmadetheUSthefirstnation
toforbidimportsofbothrawandfinishedivory.Theban,saysBohlen,sendsaveryclearmessagetotheivorypoachersthatthegameisover.
InthepastAfricannationshaveresistedanivoryban,butincreasinglytheyrealizedthatthedecimationoftheelephantherdsposesaseriousthreattotheirtouristbusiness.LastmonthTanza-niaandseveralotherAfricancountriescalledforanamendmenttothe102nationConventiononInternationalTradeinEndangeredSpeciesthatwouldmaketheivorytradeillegalworldwide.
TheamendmentisexpectedtobeapprovedatanOctobermeetinginGenevaandtogointoeffectnextJanuary.Butbetweennowandthen,conservationistscontend,poachersmaygoon
arampage,killingelephantswholesale,sonationsshouldunilaterallyforbidimportsrightaway.TheUS
governmentbroughtthatargument,andbyweek'sendthetwelvenationEuropeanCommunityhadfollowedwithitsownban.
Whichofthefollowingisthebesttitleforthepassage?______ A．AfricanElephantsandtheIvoryTrade
B．ABidtoSavetheElephant
C．ThePoachers
D．ElephantsinDanger
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