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A.UPDATE  USER  HR  ACCOUNT  DISABLE
B.UPDATE  USER  HR  ACCOUNT  LOCK
C.ALTER USER  HR  ACCOUNT  DISABLE
D.ALTER USER  HR  ACCOUNT  LOCK

A.SELECT * FROM cd WHERE category IN （’CLASSIC’，’ROCK’）
B.SELECT * FROM cd WHERE category BETWEEN ’CLASSIC’ AND ’ROCK’
C.SELECT * FROM cd WHERE category=’CLASSIC’ AND category=’ROCK’
D.SELECT * FROM cd WHERE category=’CLASSIC’ OR category=’ROCK’