Although of danger, tourists can't help taking photos near the cliff (悬崖) .
A. having warned
B. warned
C. warning
D. to be warned
网友回答
A. having warned
(答案→)B. warned
C. warning
D. to be warned
解析:本句中的动词warn与句子主语tourist之间构成逻辑上的被动关系,故使用过去分词warned做状语,本句前面的although是可以省略的,放在这里是为了进一步加强语义。句义:尽管被警告有危险,但是游客还是忍不住地在悬崖附近拍照片。D项的不定式表示的未来。故B正确。