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统计出考试平均分大于70分的课程及平均分,下面查询统计语句正确的是(   ) A. select 课程,avg(score) from student_score where score > 70 B. select课程,avg(score) from student_score where avg(score) > 70 C. select课程,avg(score) from student_score having avg(score) > 70 D. select课程,avg(score) from student_score group by 课程 having avg(score) > 70

题目标签:大于统计出语句
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