单选题 His writing is so______, obscure, and overwrought that it is difficult to make out what he is trying to say.
A. dubious B. diffuse C. indifferent D. accurate

【正确答案】 B
【答案解析】句意：他的文章冗赘晦涩过度紧张，使人很难弄清楚他想表达什么。diffuse不简洁，冗赘的。dubious可疑的，不确定的。indifferent无关紧要的。accurate正确的，精确的。