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【单选题】
关于结构化查询语言SQL说法正确的是________。
A.
SQL为非数据库语言
B.
所有主要的关系数据库管理系统都支持SQL语言
C.
SQL拥有上百条命令
D.
SQL为过程化语言
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参考答案：
B
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举一反三
Why did the two girls hide behind their family members when they first met?
A.
Because they were playing a game.
B.
Because they didn’t like each other.
C.
Because they quarreled before.
D.
Because they were both shy.
He couldn’t ______ the fact that the money was found in his house.
A.
answer for
B.
leave for
C.
account for
D.
care for
What would have happened to her friend if the author had not cared about her?
A.
She would have lost her new best friend.
B.
She would have killed herself that night.
C.
She would have run away from her family.
D.
She would have stayed in hospital for a long time.
Would any one of you please tell me ______ to the railway station?
A.
how far is it
B.
how far it is
C.
how far is
D.
how far
相关题目：
Why did the two girls hide behind their family members when they first met?
A.
Because they were playing a game.
B.
Because they didn’t like each other.
C.
Because they quarreled before.
D.
Because they were both shy.
He couldn’t ______ the fact that the money was found in his house.
A.
answer for
B.
leave for
C.
account for
D.
care for
What would have happened to her friend if the author had not cared about her?
A.
She would have lost her new best friend.
B.
She would have killed herself that night.
C.
She would have run away from her family.
D.
She would have stayed in hospital for a long time.
Would any one of you please tell me ______ to the railway station?
A.
how far is it
B.
how far it is
C.
how far is
D.
how far
参考解析：
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