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【单选题】
把ER模型转换为关系模型时，实体之间多对多联系在关系模型中通过（ ）。A.
建立新的关键字实现
B.
建立新的实体实现
C.
建立新的关系实现
D.
建立新的属性实现
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反馈参考答案：
举一反三
【简答题】A: Goodbye and thank you for coming.
【简答题】补全对话。 A. She's wearing a red coat, brown trousers and black shoes. B. Thank you. Goodbye. C. She likes singing and drawing. Her favorite sports is swimming. D. She's six. E. She's got blue eyes and lo...
【单选题】— Look! Here comes the bus and I have to go now. Thank you for coming to see me off. — Goodbye and ______! [ ]
A.
congratulations
B.
cheer up
C.
all the best
D.
go ahead
【简答题】A: Goodbye and thank you for coming. B: Goodbye!
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