A.10099.4 B.9999.5 C.10099.5
A.當前月份、整型 B.當前月份、字符型 C.當前月份的英文名、字符型
A.打開數(shù)據(jù)庫teaching B.使用數(shù)據(jù)庫teaching C.關閉數(shù)據(jù)庫teaching