题目

________ does the child ________?A.Where; comes from B.Where; from C.Where; come from D.Where; is from 答案：【答案】C【解析】句意：那个孩子来自哪里？考查短语辨析。be from=come from“来自”，句中does是助动词，后接实义动词原形，故选C。 二次函数f(x)满足f(2)＝－1，f(1)＝－1，且f(x)的最大值为8． (1)求f(x)解析式， (2)求f(x)＞－1解集．