【简答题】设有字符串 s1=‘ABCDEFG’,s2=‘ yxz ‘, 请用 MySQL 函数完成以下运算: ( 1 )
返回 s1 最左边的 3 个字符和最右边的 3 个字符。 ( 2 )分别删除字符串 s2 首部空格、尾部空格、所有空格。 ( 3 )返回字符串 s1 第 3 个字符开始的 4 个字符串 ( 4 )比较 s1 和 s2 两个字符串
【简答题】A.To play the violin un a concert. B.To go to New York City. C.To apply fur a scholarship. D.To have her performance taped.
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【判断题】避免大学生沉迷网络最好的办法是家长能够陪读。
【单选题】Identify the adjectives: My new puppy has curly, black fur and enormous paws.
A.
curly, black, enormous
C.
My, new, curly, black, enormous
D.
new, curly, black, enormous
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【判断题】在我国民间图案中,蝙蝠经常用来代表吸血鬼。
【简答题】设有字符串s1=‘ABCDEFG’,s2=‘ yxz ‘,请用MySQL函数完成以下运算: (1) 返回s1最左边的3个字符和最右边的3个字符。 (2)分别删除字符串s2首部空格、尾部空格、所有空格。 (3)返回字符串s1第3个字符开始的4个字符串 (4)比较s1和s2两个字符串