题目

 (    )97. Not only his parents but also his sister ________ the museum.           A. are going to   B. is going to   c. are going      D. is going 答案：B已知：x＞0，y＞0，且2x+1y=1，若x+2y＞m2+2m恒成立，则实数m的取值范围是（　　）A．（-∞，-2]∪[4，+∞）B．（-∞，-4]∪[2，+∞）C．（-2，4）D．（-4，2）