题目

No children           to watch this kind of movie because it’s too scary. A. should allow              B. shouldn’t be allowed   C. should be allowed     D. don’t allow 答案：C14．设f（x）=|lg|x||，若a＜b＜0，且f（a）=f（b），则a2+b2的取值范围是（2，+∞）．