Firstly, you’d better skim the article to get the c________ thought when reading.
(c)entral
【详解】
句意:首先,阅读时你最好浏览一下这篇文章,以了解其中心思想。根据 “you’d better skim the article to get the” 及首字母提示可知,此处是指 “ 中心思想 ” ,英语表达为 central thought ,用形容词 central 修饰其后的名词,故填 (c)entral 。