-The passage is too hard to understand . -Yes,---it's very s

-The passage is too hard to understand . -Yes,---it's very short and there are no few words in it.
A.so B.as C.because D.though 我们老师选了c,可是我还是不理解,她说是新单词太多,可是一个new都没有啊?到底应该选哪个?为什么?
好吧,谢谢咯,因为虽然后一句不太理解,但是文章短跟前面的难联系起来我也觉得应该选d才对