请阅读Passage 1。完成第小题。Passage 1African elephants have been slaughtered at alarming rate over the past d

【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.Accordingtothepassage,"dwindle"(Para.1)means__________.查看材料

A、decrease
B、enlarge
C、weaken
D、eliminate

参考答案:

A