You cannot accept an opinion to you unless it is based on facts.
A. offering
B. to offer
C. having offered
D. offered
网友回答
A. offering
B. to offer
C. having offered
(答案→)D. offered
解析：句意：你不能接受什么观点，除非它以事实为基础。动词offer的逻辑主语就是opinion，opinion和动词offer构成逻辑上的被动关系，表被动，用过去分词。
【考点定位】考查非谓语动词中的过去分词。