![RIVERDOLPHINRUNNINGOUTOFTIMETheYangtzedolphinistheonlyk...]( "RIVERDOLPHINRUNNINGOUTOFTIMETheYangtzedolphinistheonlyk...")
- 问题详情：RIVERDOLPHINRUNNINGOUTOFTIMETheYangtzedolphinistheonlykindofdolphinthatlivesinfreshwaterallitslife.ScientistssaythatthefinlessfreshwaterdolphinthathaslivedintheYangtzeRiverforover20millionyears,willdieoutin15years.It’sindangerofdisappearingf...
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