【单选题】请阅读Passage1。完成第小题。Passage1Africanelephantshavebeenslaughteredatalarmingrateoverthepastdecade,largelybecausetheyaretheprimarysourceoftheworld'sivory.Theirpopulationhasbeendwindledfrom1.3millionin1979tojust625,000today,andtherateofkillinghasbeenacceleratinginrecentyearsbecausemanyoftheolder,biggertuskedanimalshavealreadybeendestroyed."Thepoachersnowmustkilltimesasmanyelephantstogetthesamequantityofivory,"explainedCurtisBohlen,SeniorvicepresidentoftheWorldWildlifeFund.Thoughitsrecordontheenvironmenthasbeenspottysofar,thegovernmentlastweektooktheleadinamajorconservationissuebyimposingabanonivoryimportsintotheUS.Themovecamejustfourdaysafteraconsortiumofconservationgroups,includingtheWorldWildlifeFundandWildlifeConservationInternational,calledforthatkindofaction,anditmadetheUSthefirstnationtoforbidimportsofbothrawandfinishedivory.Theban,saysBohlen,sendsaveryclearmessagetotheivorypoachersthatthegameisover.InthepastAfricannationshaveresistedanivoryban,butincreasinglytheyrealizedthatthedecimationoftheelephantherdsposesaseriousthreattotheirtouristbusiness.LastmonthTanzaniaandseveralotherAfricancountriescalledforanamendmenttothe102nationConventiononInternationalTradeinEndangeredSpeciesthatwouldmaketheivorytradeillegalworldwide.TheamendmentisexpectedtobeapprovedatanOctobermeetinginGenevaandtogointoeffectnextJanuary.Butbetweennowandthen,conservationistscontend,poachersmaygoonarampage,killingelephantswholesale,sonationsshouldunilaterallyforbidimportsrightaway.TheUSgovernmentbroughtthatargument,andbyweek'sendthetwelvenationsEuropeanCommunityhadfollowedwithitsownban.Sincemanyoftheolder,bigger-tuskedanimalshavealreadybeendestroyed,whatdidthepoacherdo?查看材料A、Theygaveuppoaching.
B、Theykilledmoreelephantstogetthesamequantityofivory..
C、Tothem,gameisover.
D、Theyrealizeditwasillegaltoslaughterelephants.
Ta老师题库