Yesterday evening I came across the man _____ you think is pleased to _____. A. who, talk B. whom, get along with C. who, work with D. whom, be talked with 答案:C 解析: 关系代词who在引导的限制性定语从句中充当主语,不及物动词后若跟宾语,则需加介词。故选C。如图,直线y=x2-4交于A、B两点,线段AB的垂直平分线与直线y=-5交于Q点.
(1)求点Q的坐标;
(2)求P为抛物线上位于线段AB下方(含A、B)的动点时,求OPQ面积的最大值.