问题 问答题 简答题

简答系统分析与概念设计。

答案

参考答案:该阶段需确定最适宜的开发方法和系统实现所需要的资源,包括技术、财务和组织的资源,在概念设计以后,进行可行性分析。在阶段划分上,可将问题规划、调查、概念设计都纳入系统分析中,即把系统设主地前的工作都看作系统分析的一部分。在系统分中还需要对整个问题的现状进行深入了解,掌握它的来龙去脉,它的有效性和存在的问题。在此基础上,对建立新系统的可行性进行论证。如果要建立新系统,还要提出总的设想、途径和措施。在系统分析的基础上提出系统分析报告。

阅读理解

Have you ever hoped a toy balloon? They are very light. But there are much bigger balloons can fly very high up in the sky. They are big enough to carry people. They are called hot-air balloons.

To make a hot-air balloon go up, turn on the burner(燃烧器). That will make the air inside the balloon hotter. Then the balloon will go up.

To make the balloon go down, turn off the burner. The air inside the balloon will get cooler. Then the balloon will go down. Underneath(在….下面) the balloon there is a large basket. That is where the pilot and the passengers go.

The burner is just above the basket. You can stand in the basket and turn the burner on and off. The balloon will go where the wind is blowing the right way! Do you want the balloon to go somewhere special? First make sure the wind is blowing the right way!

People have been flying in hot-air balloons for over two hundred years. Before planes it was the only way of flying. Today people fly in hot-air balloon for fun. Some people like to race hot-air balloons.

小题1:A hot-air balloon is ____

A.smaller than a toy balloon

B.bigger than a toy balloon

C.the same as a toy balloon

D.lighter than a toy balloon小题2:Where will you sit if you want to fly in the balloon?

A.Inside the basket

B.On top of the balloon

C.Under the basket

D.Inside the balloon小题3:You want the balloon to go up. So you will ____

A.jump out of the balloon

B.let the air out of the balloon

C.make the air inside the balloon hotter

D.let the air inside the balloon cool down小题4:Now you are high up in the sky. If you want the balloon go down, you will _____

A.make your friends go out of the basket

B.make a hole in the balloon with a knife

C.make the air inside the balloon hotter

D.make the air inside the balloon cooler小题5: Now everything is all right! The balloon is flying across the sky. Where are you going?

A.Towards the sun

B.To the seaside

C.Where the wind blows you.

D.To the nearest mountains

选择题