South of the Hudson River,Appalachian Moutains are divided into 3 main section
s, among which the Blue Ridge has most of the highest peaks of the mountain sy
stem.选错
答案是the Appalachian Moutains
但是我想问 方位South前面不是也应该加the吗?

The south 是指南边 不一定是mountain 吧话说托福不会这样考吧