设有职工实体Employee(职工号,姓名,性别,年龄,通信地址,家庭成员),其中通信地址记录了邮编、省、市和街道信息;家庭成员记录了职工亲属的姓名。
职工实体中的通信地址是一个(51)属性;为了将数据库模式设计的更合理,对于家庭成员属性(52)。
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Which of the following is right according to the author?
A. If you want to get what you want, you first choose to be happy.
B. Most people today are happy.
C. Work is a necessary part in our daily life.
D. We should try to get more and then we'll be happy.
A.A journal tailcoat.B.An essay.C.Poetry.D.A short story.
A journal tailcoat.
B. An essay.
C. Poetry.
D. A short story.
听力原文:M: Excuse me, I'm looking for some books for professor Johnson's course.
W: I'm afraid they are not available. You'll have to order them, and it will take the publisher three weeks to ship them to us.
Q: Where did this conversation probably take place?
(14)
At a news-stand.
B. In the college bookstore.
C. In the library.
D. At a department store.
W: You could go to a computer store, or a discount store, but if I were you, I'd look into some of the special offers through the university. I saw something in the paper just last night.
Q: What advice does the woman give the man?
(19)
A. To buy the computer at a discount store.
B. To put an ad in the newspaper for a computer.
C. To go to a computer store to buy the computer.
D. To buy the computer at the university as a special offer.