废话不多说，先跪谢~

pazzaintermilanUID: 3262759

exercise 3 第一篇 第二题
原文中有这样一句话 it is only because of the enormous interstellar distances that so little material per unit of volume becomes so significant.
题干是It can be inferred from the passage that it is because space is so vast that_
A little of the interstellar material in it seems substantial
C stars can be far enough from the earth to be obscured even by very sparsely distributed matter.
答案选C，但我觉得A看起来也是对的。。A看起来很像文中的同义句转换啊。求解答。。
PS：这是我第二遍做36套。。感觉36套的阅读笔记（即答案解释）有的不是很靠谱啊。。。没有更靠谱一点的答案解释了吗

NightzzUID: 3320648

这。。。significant和substantial是两个概念啊 后者是说量大。尘埃的作用是遮蔽，只能说它的遮蔽效果看上去很明显，不是量大