问题 单项选择题

在数据管理技术的发展过程中,经历了人工管理阶段、文件系统阶段和数据库系统阶段。 其中数据独立性最高的阶段是

A.数据库系统

B.文件系统

C.人工管理

D.数据项管理

答案

参考答案:A

解析:解析:人工管理阶段是在20世纪50年代中期以前出现的,数据不独立,完全依赖于程序;文件系统是数据库系统发展的初级阶段,数据独立性差;数据库系统具有高度的物理独立性和一定的逻辑独立性。

单项选择题
阅读理解

To find how the name Canada came about we must go back to the 16th century. At that time, the French dreamed of disclosing and controlling more land, of expanding(扩展)trade beyond(超出)  their borders and of spreading their faith(信仰) across the world .In 1535, Francois I ,King of France, ordered a navigator (航海家) named Jacques Cartier to explore(探险) the New World and search for a passage to India.

Cartier first arrived at the Gulf of the St. Lawrence, which he wanted to explore. He did not know what to expect but he hoped that this Gulf was just an arm of the ocean between two islands. If it was, he would soon be on his way to the Far East. So he sailed upstream along the St. Lawrence River. However, instead or reaching Asia he arrived at Quebec or Stadacona, as the Indians called it. It was at this point that the term “ Canada” entered the country’s history. Apparently the word “Canada” came from an Indian work “Kanata”, which means community or village. Cartier first used it when he referred to Stadacona or Quebec. What a huge “ village” Canada is!

小题1:In the early sixteenth century , the King of France ordered Cartier to ______

A. find the new world

B. build an entirely new country

C. go and visit the American Indians

D. get more information about America and find a way to Asia小题2:Having reached the Gulf of St. Lawrence Cartier thought _____

A. he had already got to India

B. it was a water way to the New World

C. it was a water passage to the East

D. he had sailed into the Atlantic小题3:In the early sixteenth century , Quebec was only ____.

A. an Indian village

B. a little town in southern Canada

C. a village at the entrance to the Gulf of St. Lawrence

D. the place which we call Canada now小题4:Pick out the right statements from the following _____

A. Quebec was a village and Stadacona was another

B. Cartier mistook Quebec for Stadacona

C. Stadacona was a village in Quebec

D. Stadacona was what the Indians called Quebec then小题5:“Canada” was first used to refer to _____

A. a small town in Stadacona

B. the place called Quebec

C. a long water passage

D. a huge village including Quebec and Stadacona