问题 单项选择题

用链表表示线性表的优点是( )。

A) 便于插入和删除操作
B) 数据元素的物理顺序与逻辑顺序相同
C) 花费的存储空间较顺序存储少
D) 便于随机存取

答案

参考答案:A

解析: 链式存储结构克服了顺序存储结构的缺点:它的结点空间可以动态申请和释放;它的数据元素的逻辑次序靠结点的指针来指示,不需要移动数据元素。故链式存储结构下的线性表便于插入和删除操作。本题答案为A)。

单项选择题
阅读理解

The industrial age has been the only period of human history in which most people’s work has taken the form of jobs. The industrial age may now be coming to an end, and some of changes in work patterns which it brought may have to be reversed. This seems a discouraging thought. But, in fact, it could offer the prospect of a better future for work. Universal employment, as its history show, hasn’t meant economic freedom.

Employment became widespread when the enclosures(圈地运动)of the 17th and 18th centuries made many people dependent on paid work by taking them away from the use of the land, and thus from the means to provide a living for themselves. Then the factory system destroyed the cottage industries and removed work from people’s homes. Later, as transport improved, first by rail and then by road, people traveled longer distances to their place of employment until, eventually, many people’s work lost all connection with their home lives and the places in which they lived.

Meanwhile, employment put women at a disadvantage. In pre-industrial times, men and women had shared the productive work of the household and village community. Now it became customary for the husband to go out to paid employment, leaving the unpaid work of the home and family to his wife. Tax and benefit regulations still assume this norm(准则)today, and restrict more flexible sharing of work roles between sexes.

It was not only women whose work status suffered. As employment became the dominant form of work, young people and old people were kept out — a problem now, as more teenagers disappointed and annoyed at school and more retired people want to live active lives.

All this may now have to change. The time has certainly come to switch some efforts and resources away from the utopian(乌托邦)goal of creating jobs for all, to the urgent practical task of helping many people to manage without full-time jobs.

小题1: From the passage we can learn that ____.

A.jobs have existed since human came into being

B.the industrial age brought jobs to everyone

C.the industrial age brought the work patterns most people’s work has taken

D.in the future more and more people could get jobs as the industry is developing小题2:Before the enclosures of the 17th and 18th, people lived mainly on ____.

A.paid work

B.unpaid work

C.taxes and benefits

D.land小题3:Before the industrial age women played ____.

A.more important roles in making a life

B.less important roles in making a life

C.roles as weak as after in raising their children

D.roles as important as men in supporting a family小题4: From the passage we can infer that ____.

A.creating jobs for all must be changed

B.enough jobs must be created by our society

C.more and more jobs are being created

D.industrial age has made many people unable to live without full-time jobs