问答题 8.  Polar bears have thick fur, big paws and other features that make them well prepared for life in their tough environment.
【正确答案】北极熊有厚厚的毛皮、大大的脚掌和其他一些特征，使得它们能够为这种艰苦环境的生活做好充分准备。
【答案解析】