至少选修刘老师所授课程中一门课程的女学生姓名

2)检索王同学不学的课程的课程号

3)检索全部学生都选修的课程的课程号与课程名。

4)检索选修课程包含刘老师所授课的学生学号。

5)求选修课程号为2的学生的平均年龄。

6)求刘老师所授课程的每门课程的学生平均成绩。

7)检索学号比刘同学大，而年龄比他小的学生姓名。

8)求年龄大于女同学平均年龄的男同学姓名和年龄。

-At least Liu elective courses taught in a course of female students the names of 2) retrieval Wang students not to learn the courses No. 3) Search for all students of the courses are elective courses and courses of No.. 4) Search elective courses included in the medium of instruction Liu No. students. 5) seek No. 2 elective courses in the average age of students. 6) Liu granted for courses for each course the students grade point average. 7) Search Xue Liu students than its big, but older than his young students the names. 8) for the age of the average age of female students than male students name and age.