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问题 填空题

在图形旋转过程中，图形的旋转是由______和______所决定的，其中______保持不动．

答案

在图形旋转过程中，图形的旋转是由旋转中心和旋转角所决定的，其中旋转中心保持不动；

故答案为：旋转中心；旋转角；旋转中心．

完形填空

Mr. Rock teaches maths at a secondary school. He knows well of his neighbours except the man who lives next door. The man never speaks to anyone and no one knows what he does to make a living .

One day, when Mr. Rock came home from work , he found a gold necklace outside his door. Mr. Rock wondered where it came from. He thought that perhaps someone had dropped it. Mr. Rock planned to take it to the police station the next day. He thought the police would be able to find the owner.

Just then, the police came to Mr. Rock’s home and saw the necklace in his hand. Mr. Rock was very shocked when he was accused(起诉) of robbery(抢劫). A policeman told him that a jewellery shop had been robbed. A witness said that she had seen someone run from the jewellery shop into Mr. Rock’s building right after the robbery.

Mr. Rock was not the robber, but how could he prove it?

小题1:What’s Mr. Rock’s job? （不超过5个单词）____________________________________

小题2:Where did he find the necklace? (不超过3个单词) _______________________

小题3:Why did Mr. Rock feel shocked? (不超过6个单词) ________________________
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单项选择题

下面第(23)～(24)题基于以下说明：设有如下两个关系，若雇员信息的主键是雇员号，部门信息表的主键是部门号。假设雇员信息表中的工资最低为800(包括800)，最高不能超过2000。另外，这里假定DBMS不支持级联删除和级联更新功能。
雇员信息表
雇员号雇员名部门号工资
001张山022000
010王宏达011200
056马林生021000
101赵敏041500
　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　部门信息表
部门号部门名主任
01业务部李建
02销售部应伟东
03服务部周垠
04财务部陈力胜

在下列所给的操作中，哪个操作能被执行

A．将部门表中财务部的部门号修改为‘05’

B．将行(‘102’，‘赵敏’，‘01’，1500)插入到雇员信息表中

C．将雇员表中雇员号＝‘010’的工资改为600元

D．将雇员表中雇员号＝‘101’的部门号改为‘05’
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