Hunter: Hunters alone are blamed for the decline in Greenrock National Forest’s deer population over the past ten years. Yet clearly, black bears have also played an important role in this decline. In the past ten years, the forest’s protected black bear population has risen sharply, and examination of black bears found dead in the forest during the deer hunting season showed that a number of them had recently fed on deer. 黄色部份为hunter表述一个事实 蓝色部份为hunter做出本文结论 绿色部份为hunter做出上面结论的原因 所以ANS: A 請指教 |