题目

The Korean actor called Kim Soo Hyun has been famous in China          2013. A. from         B. since         C. for               D. in 答案：B若关于x的不等式|x+2|+|x－1|<a的解集是φ，则α的取值范围是(    ) A．(3，+∞) B．[3，+∞] C．(－∞，3) D．(－∞，3)