请找出句子中的名词。5r+f+U8Y4_:T9A6c5h
Ben is a good student at school. 8Z1i;{'_/I*N9Y 4w8Z(~-L/e3I/y;y0|(z 5E1e6G/b:R:n4q:K5r+f+U8Y4_:T9A6c5h