A、SELECT 课程名称，SUM（分数）AS分数 FROM curriculum, grade WHERE curriculum. 课程编号= grade.课程编号 GROUP BY课程名称 B、SELECT 课程名称，MAX（分数）分数 FROM curriculum, grade WHERE curriculum. 课程编号= grade.课程编号 GROUP BY课程名称 C、SELECT 课程名称，SUM（分数）分数 FROM curriculum, grade WHERE curriculum. 课程编号= grade.课程编号 GROUP BY curriculum.课程名称 D、SELECT 课程名称，MAX（分数）AS分数 FROM curriculum, grade WHERE curriculum. 课程编号= grade.课程编号 GROUP BY curriculum.课程名称
