题目

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.  
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