问题 单项选择题

数据库应用系统中的核心问题是______。
A) 数据库设计 B) 数据库系统设计
C) 数据库维护 D) 数据库管理员培训

答案

参考答案:A

解析: 数据库设计与管理
[评析] 数据库应用系统是数据库系统再加上应用软件及应用界面这三者所组成,具体包括:数据库、数据库管理系统、数据库管理员、硬件平台、软件平台、应用软件、应用界面。在数据库应用系统中的—个核心问题就是设计—个能满足用户要求,性能良好的数据库,这就是数据库设计。所以选项A是正确的。

阅读理解

阅读理解。

     Hidden in our subconsciousness (潜意识) is a perfect mental picture. We see ourselves on a long trip that

goes across the continent. We are traveling by train. Out the windows, we think in the passing scene of cars

on nearby highways, of children waving at a crossing, of cattle feeding on a distant hillside, of smoke pouring

from a power plant, or row upon row of corn and wheat, of flat lands and valleys, of mountains and rolling

hills, of city skylines and village halls.

     But uppermost in our minds is the final destination. On a certain day at a certain hour, we will pull into the

station. Bands will be playing and flags waving. Once we get there, so many wonderful dreams will come true

and the pieces of our lives will fit together like a completed jigsaw puzzle. How restlessly we pace the aisles,

condemning (谴责) the minutes for loitering (虚度)- waiting, waiting, waiting for the station.

     "When we reach the station, that will be it!"we cry."When I'm 38." "When I buy a new 450SL Mercedes

Benz!" "When I put the last kid through college." "When I have paid off the debt!" "When I get a promotion."

"When I reach the age of regent, I shall live happily ever after!"

     Sooner or later, we must realize there is no station, no one place to arrive at once and for all. The true joy

of life is the trip. The station is only a dream. It constantly outdistances us.

     "Relish (appreciate) the moment" is a good motto, actually it isn't the burdens of today that drive man mad.

It is the regret over yesterday and the fear of tomorrow. Regret and fear are twin thieves who rob us of today

     So stop pacing the aisles and counting the miles. Instead, climb more mountains, eat more ice-cream, swim

more rivers, watch more sunsets, laugh more and cry less. Life must be lived as we go along. Then the station

will come soon enough.

1. Why does the author describe the mental picture?

A. To lead us into a perfect world.

B. To let people enjoy the scenery.

C. To introduce an actual trip of his.

D. To compare it to our life's journey.

2. How do people feel when they're on their trip?

A. Puzzled.

B. Happy.

C. Relaxed.

D. Impatient.

3. What does the author mean by "Regret and fear are twin thieves who rob us of today" in Line 2 Paragraph 5?

A. Regret and fear are responsible for the loss of today.

B. We must be careful of the two thieves: regret and fear.

C. Regret and fear stop us from enjoying our present life.

D. We're frequently challenged by the two: regret and fear.

4. Why does the author write the passage?

A. To teach us a good lesson.

B. To tell us the right attitude to life.

C. To advise us to forget our worries.

D. To stop us wandering along the aisles.

单项选择题