单项选择题 What distinguished her in the other girls was her peculiar hairstyle（）.

单项选择题 I knew nothing of the motives behind his recent move,and I don't know either the person to put him up to the action（）.

单项选择题 Just last week, for example, the World Health Organization (WHO) announced the disturbing disclosure that SARS may be pretty deadlier than previously believed（）.