题目

单项选择。Yesterday I only bought _________ for my cousin, but __________ for myself.     A. something; something               B. nothing; something       C. nothing; nothing                       D. something; nothing 答案：D若的解集为x＞1，那么a的取值范围是（      ） A、a＞0      B、a＜0      C、a＜1      D、a＞1