A teenager from northern China who lost his sight in a brutal attack has emerged as one of the top scorers in the national college entrance examination for students with disabilities.Thirteen years ago, Guo Bin was just six years old when a middle-aged woman lured him away from his home in Shanxi province.After threatening to gouge out his eyes if he continued to cry, the woman attacked him with a tree branch, resulting in permanent blindness.Guo was later found conscious but covered in...