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【简答题】
删除学生表中学号取唯一值的约束。
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举一反三
【简答题】A．It depends on their age. B．It depends on where they live. C．It's a matter of personal choice. D．It's a matter of social custom.
【简答题】The reason people trade, regardless of where they live, is that they believe they will be better off by trading.
【单选题】— How do you think students should get to school? — It depends _________ where they live. [ ]
A.
for
B.
on
C.
in
D.
／
【单选题】To find out where they live you ask them:
A.
Where you live?
B.
You live where?
C.
What's your address?
D.
Where do you live?
【单选题】The reason people trade, regardless of where they live, is that they believe they will be better off by trading
A.
不管是哪里人，他们进行贸易的理由是因为他们相信通过贸易可以获益。
B.
人们进行贸易的原因是无论他们住在哪里都可以通过贸易获得收益。
C.
人们做贸易的原因是无论他们住在哪里都可以通过贸易得到改进。
【判断题】British people like guessing games, such as asking someone what they do, where they live, etc.
A.
正确
B.
错误
【简答题】A．It is only forty miles from where they live. B．It is a small one with a two-bedroom house. C．It was bought at a price lower than expected. D．It has a large garden with fresh vegetables.
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