题目

阅读理解The words protect animals appeareverywhere in books and on screens because some animals are in danger of dying out.But sometimes the reality can be a little different from what people read or watch.About 300 black bears were killed in Florida,the US, in October, 2015. It's been the first bear hunt since 1994. Animal protection groups protested thisdecision. But local officials explained that the black bear population had grownto 3,500 and become a menace to local people.In the past two years, bears have hurt at least four people in Florida. This brings an old question back into the经过两圆x2+y2=4和x2+y2-10x+16=0的公共点且过P（4，2）的圆的个数为 个．