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【单选题】
将概念结构转换为某个DBMS所支持的数据模型是在( )阶段进行的。A.
需求分析阶段
B.
概念结构设计阶段
C.
逻辑结构设计阶段
D.
数据库实施阶段
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反馈参考答案：
举一反三
【简答题】将3封信投入 4 个不同的邮筒的投法共有多少种 ?
【单选题】Dialogue 2.
A.
She expresses her indignation at the criticism
B.
She has tried her best
C.
She proposes to work late
D.
She couldn't make up the time
【简答题】将 3 封不同的信投入 4 个不同的邮筒,则 有( )种不同 投法。
【简答题】Which of the following statements is not correct about the dialogue?A. Thewoman wants to hear a recital on the 16th of December. B. Theman doesn't know the time when the recital begins. C. Theman does...
【简答题】Dialogue One 2.A. Hewants to know what true friends are. B. He wants to borrow money from the woman. C. He wants to share his opinion on friendship with the woman. D. He wants to kill the time.
【简答题】超市扫描条码时不能正确识读，请分析原因。
【单选题】Dialogue Two 2.
A.
The man should go out more to have more opportunities to know more people.
B.
The man should wear expensive clothes to make him look handsome.
C.
The man should make more money to make people like him.
D.
The man could join a club or take a class to make some new friends.
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