问题 解答题
计算:(1)-5-3.5÷
7
8
×(-
3
4
)

(2)-14-[1-(1-0.5×
1
3
)]×[2-(-3)2]
答案

(1)-5-3.5÷

7
8
×(-
3
4

=-5-

7
2
×
8
7
×(-
3
4

=-5+3

=-2;

(2)-14-[1-(1-0.5×

1
3
)]×[2-(-3)2]

=-1-[1-(1-

1
6
)]×(2-9)

=-1-(1-1+

1
6
)×(-7)

=-1-

1
6
×(-7)

=-1+

7
6

=

1
6

问答题

试题三(共15分)阅读下列说明,回答问题1至问题3,将解答填入答题纸的对应栏内。【试题说明】某集团公司拥有多个大型连锁商场,公司需要构建一个数据库系统便于管理其业务运作活动。【需求分析结果】1. 商场需要记录的信息包括商场编号(商场编号不重复)、商场名称、地址和联系电话。某商场信息如表3-1所示。

2. 每个商场包含不同的部门,部门需要记录的信息包括部门编号(不同商场的部门编号不同)、部门名称、位置分布和联系电话。某商场的部门信息如表3-2所示。

3. 每个部门雇用了多名员工处理日常事务,每名员工只能属于一个部门(新进员工在培训期不隶属于任何部门)。员工需要记录的信息包括员工编号、姓名、岗位、电话号码和工资。员工信息如表3-3所示。

4. 每个部门的员工中有一个是经理,每个经理只能管理一个部门。系统要记录每个经理的任职时间。【概念模型设计】根据需求阶段收集的信息,设计的实体联系图和关系模式(不完整)如下:

【关系模式设计】商场(商场编号,商场名称,地址,联系电话)部门(部门编号,部门名称,位置分布,联系电话, (a) )员工(员工编号,姓名,岗位,电话号码,工资, (b) )经理( (c) ,任职时间)

【问题3】(2分)为了使商场有紧急事务时能联系到轮休的员工,要求每位员工必须且只能登记一位紧急联系人的姓名和联系电话(假设不同员工可以登记相同的紧急联系人)。中还需添加的实体是 (d) ,该实体与图3-1中的员工关系存在 (e) 联系。给出该实体的关系模式。

阅读理解

A new report says African governments are ill prepared to handle the growing number of people over age 65. The population in Africa  as in other parts of the world, is getting older. Currently, there are 36 million people on the continent 65 years and above. which is 3.6 percent of the population. up from 3.3 percent 10 years ago. That could rise to 4.5 percent by 2030 and 10 percent by 2050. The African development Bank is raising concerns over the shortage of health insurance and pensions (养老金).

The African Development Bank says. "Aging is highly linked with long-term physical and mental  disability and a number of long-term chronic (慢性的) conditions."

"Africa is not well prepared to care for its aging population right now. And it needs to prepare for this fact." said Professor Mthuli Ncube. the African Development Bank's chief economist. African nations spend far less on healthcare than developed nations do___ about $26per person per year. Not so many countries have well developed medical aid plans for the elderly, whether they are privately provided plans or indeed government plans. If you look at the pension plans, you will find the pension industries are not well developed in some of the countries.

Professor Mthuli Ncube said African governments failed to take action on health insurance

and pensions because they were busy with economic reforms.

Another challenge for Africa is the worsening of informal systems of social protection. That is cash and support from both the extended family and community sources.

. The African Development Bank recommends governments help carry out health insurance and pension plans. Ncube said African governments didn't have to handle the health insurance burden alone. "It is not only a must but also an opportunity for private companies to add their bit in this regard", he said. The report also recommends that African governments consider providing ways of free health services. medications and long-term health care facilities for the elderly.

小题1: From the first paragraph we know the facts except that ____

A.the speed of people aging is becoming quicker

B.Africa has the largest aging population

C.African governments are not well prepared to deal with the aging population

D.the shortage of health insurance and pensions adds to African governments' difficulty in dealing With the aging population小题2:Which is not highly linked with the aging according to the passage?

A.Long-term physical disability.

B.Long-term mental disability.

C.Long-term chronic illnesses.

D.Long-term shortage of care and love.小题3: What got in the way of developing health insurance and pensions in Africa?

A.The economic reforms.

B.Too many old people.

C.The shortage of land.

D.The development of the economy.小题4:How can the aging problem be solved in Africa according to Ncube?

A.African governments should spend as much money on healthcare as developed countries

B.African people should save enough money to insure their health.

C.African governments should combine with private companies to finish health insurance and pension pains.

D.Private sources should take the main responsibility to help the elderly.小题5:The article is most likely to be seen____

A.in a story book

B.in a newspaper

C.on a TV program

D.in a textbook