A.
SELECT Sname, Sno, Ssex FROM Student WHERE Sname LIKE '刘';
B.
SELECT Sname, Sno, Ssex FROM Student WHERE Sname LIKE '刘_';
C.
SELECT Sname, Sno, Ssex FROM Student WHERE Sname LIKE '刘%';
D.
SELECT Sname, Sno, Ssex FROM Student WHERE Sname not LIKE '刘%';