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The teacher together with the students ________ discussing Reading Skills that ________ newly published in America.A. are ; wereB. is ; were C. are ;
AUsually, when your teacher asks a question, there is only one correct answer. But there is one question that has millions of current answers. That q
In our class, when the bell rang and the teacher closed his book, it was a___________ for everyone to stand up.A. signal B. chance C. mark D. measure
下列SELECT语句语法正确的是( )。A.SELECT* FROM′teacher′WHERE性别=′男′B.SELECT*FROM ′teacher′ WHERE性别=男C.SELECT* FROM teacher WHERE性别=男D.SELECT* FROM teacher WHERE性别
假定学生关系是S(S#,SNAME,SEX.AGE),课程关系是C(C#,CNAME,TEACHER),学生选课关系是SC(S#,C#,GRADE),要查找选修"COMPUTER"课程的女学生的姓名,将涉及到关系A.SB.SC,CC.S,SCD.S,C,SC
假定学生关系S(S#,SNAME,SEX,AGE), 课程关系是C(C#,CNAME,TEACHER), 学生选课关系是SC(S#,C#,GRADE), 要查找选修“COMPUTER”课程的女学生的姓名,将涉及到关系( )。A.SB.SC、CC.S、SCD.S、C、SC
现在有学生关系为S(S#,Sname,Sex),课程关系为C(C#,CNAME,TEACHER),学生选课关系为SC(S#,C#,GRADE),要查找选了"ENGLISH"课程的男生姓名,将涉及到关系( )。A.SB.S,SCC.C,SCD.S,C,SC
假定学生关系是S(S#,SNAME,SEX,AGE),课程关系是C(C#,CNAME,TEACHER)学生选课关系是SC(S#,C#,GRADE)。要查找选修"COMPUTER"课程的女学生的姓名,将涉及到关系A.SB.SC,CC.S,SCD.S,C,SC