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【单选题】
已知如下关系:学生Student(S#, Sname),课程Course(C#, Cname, T#),选课SC(S#, C#, Score),教师T(T#, Tname)。其中S#为学号,Sname为学生命名,C#为课号,Cname为课程名,T#为教师编号,Score为成绩,Tname为教师名。阅读SQL语句Select S# From SC SC1 Where SC1.C# = ‘C01’ AND S# IN(Select S# From SC SC2 Where SC2.C# = ‘C02’ AND SC1.S#=SC2.S# AND SC1.Score>SC2.Score);关于其查询结果,下列说法正确的是_____。A.
C01课程比C02课程成绩高的所有学生的学号
B.
C01同学比C02同学成绩高的所有课程的课号
C.
比C02课程成绩高的所有学生的学号
D.
其它选项的说法都不正确
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举一反三
【简答题】All the staff of the bank (work) ________ very hard last year and 20% more profit was gained.
【简答题】All the staff of the company (work)_______very hard year and 15%more profit was Gained.
【单选题】All the staff of the company (work)_______very hard year and 15%more profit was Gained.
A.
worked
B.
working
C.
to work
D.
have worked
【简答题】All the staff of the company (work)_______very hard year and 15% more profit was gained.
【判断题】All the staff of the company ( work ) working very hard last year and 15% more profit was gained.
A.
正确
B.
错误
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