Ⅰ.SELECT S#,SNAME FROM S WHERE SNAME='王%'
Ⅱ.SELECT S#,SNAME FROM S WHERE SNAME='王%'
Ⅲ.SELECT S#,SNAME FROM S WHERE SNAME LIKE'王_'
A.Ⅰ
B.Ⅱ
C.Ⅲ
D.全部