题目

已知条件,条件,且是的充分不必要条件,则实数的值范围为( )A. B. C. D. 答案:【答案】A【解析】由题意,可先解出:与:,再由是的充分不必要条件列出不等式即可得出a的取值范围.由条件,解得或,故:,由条件得:,∵是的充分不必要条件,∴,故选:A.Our school has been set up in , believe it or not , ______ used to be a temple ten years agoA.whichB.whatC.thatD.where
数学 试题推荐