问题 单项选择题

下述关于数据库系统的叙述中正确的是( )。

A.数据库系统减少了数据冗余

B.数据库系统避免了一切冗余

C.数据库系统中数据的一致性是指数据类型一致

D.数据库系统比文件系统能管理更多的数据

答案

参考答案:B

解析:数据库系统的数据具有高共享性和低冗余性,但不能完全避免数据冗余;数据的一致性是指在系统中同一数据的不同出现应保持相同的值。

问答题

A省聘请某咨询公司为省内规划一新的园区,进行产业结构优化和调整,带动周边的经济发展。咨询公司经过调查后,认为该省属于外向型经济,出口对经济的拉动作用非常大,并获得该省的如下数据,详见表6-3所列。
                              表6-3       A省2001~2007年GDP数据        单位:亿美元

年份 2001 2002 2003 2004 2005 2006 2007
名义GDP
GDP增速(以上一年价格为基数) 10.80% 10.00% 13.60% 14.20% 14.40% 14.70% 14.50%
由于经济的高速增长,同时受国际经济的影响,该省内的物价有所上涨,到2007年,物价水平持续高涨,年物价总水平达到了8.7%。政府决定稳定物价,并对以低端产品为主的出口经济模式进行调整。咨询公司根据国家“十一五”规划的指标内容,设计了该省的“十一五”期间的经济社会发展指标体系,包括GDP增速年均8%,单位国内生产总值降耗18%,主要污染物排放总量减少24%,服务业增加值比重增加到60%,服务业就业比重达到48%等指标。
【问题】1.国内生产总值与国民生产总值有何区别国内生产总值有哪些计算方法
2.通货膨胀分为哪些类型该省2007年的是否出现了通货膨胀现象,属于哪一类
3.依据“十一五”时期我国经济社会发展主要指标的属性分类,咨询公司为该省设计的 5种指标分别属于什么属性

阅读理解

阅读理解。

     Jim suffered heart problems. In conversation he expressed little joy and it seemed that his life was drawing

to a close.

     When his heart problems led to operation, Jim went through it successfully, and a full recovery was

expected. Within days, however, his heart was not beating properly. Jim was rushed back to operation, but

nothing was found to explain the cause of his illness. He died on the operating table on the day before his 48th

birthday.

     Dr. Bruce Smoller, a psychologist, had had many conversations with him, and the more he learned, the

stranger he realized Jim's case was. When Jim was a child, his father, a teacher, suffered a heart attack and

stayed home to recover. One morning Jim asked his father to look over his homework, promising to come

home from school at noon to pick it up. His father agreed, but when Jim returned his father had died. Jim's

father was 48.

     "I think all his life Jim believed he killed his father," Dr. Smoller says. "He felt that if he had not asked him

to look at his homework, his father would have lived. Jim had been troubled by the idea. The operation was

the trial he had expected for forty years."Smoller believes that Jim willed himself not to live to the age of 48.

     Jim's case shows the powerful role that attitude plays in physical health, and that childhood experiences

produce far-reaching effect on the health of grown-ups. Although most cases are less direct than Jim's, studies

show that childhood events, besides genes, may well cause such midlife diseases as cancer, heart disease and

mental illness.

1. Jim was sent back to operation because _____. [ ]

A. his heart didn't work well

B. he expected a full recovery

C. his life was drawing to a close

D. the first one wasn't well performed

2. What made Dr. Smoller feel strange about Jim's case? [ ]

A. Jim died at a young age.

B. Jim died on the operating table.

C. Both Jim and his father died of the same disease.

D. Jim's death is closely connected with his father's.

3. From Smoller's words, we can infer that _____. [ ]

A. Jim's father cared little about his study

B. Smoller agreed that Jim did kill his father

C. Jim thought he would be punished some day

D. Smoller believed Jim wouldn't live to the age of 48

4. Which of the following could have strong effect on one's physical health according to the text?

    a. One's genes.

    b. One's life in childhood.

    c. One's physical education.

    d. The date of one's birthday.

    e. The opinions one has about something. [ ]

A. a, b, d

B. a, b, e

C. a, c, e

D. b, c, d

5. Which of the following is true? [ ]

A. Both Jim and his father died at the age of 48.

B. Jim often asked his father to do his homework.

C. Jim was believed to kill his father.

D. Most childhood events can cause cancer, heart disease and mental illness.