题目

 He put up a picture of Yao Ming beside the bed to keep himself ________ of his own dreams.  A. reminded                B. reminding                 C. to remind                 D. remind 答案：A12．设随机变量ξ服从正态分布N（2，9），若P（ξ＞c）=P（ξ＜c＜-2），则c的值为3．