wangjinquan ,a teacher from Qichun,has supported many poor students to college.---he himself lives plain life.A but B though 我应该选哪个?答案好像是选B.但是我感觉but 也能说通啊.他们两个到底有什么不同的,在这里为什么要选though

wangjinquan ,a teacher from Qichun,has supported many poor students to college.---he himself lives
plain life.A but B though 我应该选哪个?答案好像是选B.但是我感觉but 也能说通啊.他们两个到底有什么不同的,在这里为什么要选though