问题 问答题

试论述冯·诺依曼型计算机的基本原理。

答案

参考答案:冯·诺依曼型计算机的基本原理:
计算机由运算器、控制器、存储器、输入设备和输出设备五大部件组成。
数据和程序以二进制代码形式存放在存储器中,存放的位置由地址确定。
控制器根据存放在存储器中的指令序列(程序)进行工作,并由一个计数器控制指令的执行,控制器具有判断能力,能以数据结构为基础,选择不同的工作流程。
冯·诺依曼型计算机的基本原理的核心思想是“存储程序与程序控制”。

阅读理解

任务型阅读。根据短文内容,回答问题。

Do you often have a cold, headache or backache? If your answer is yes, your health is a problem. Healthy foods are good for our health. Tofu is a kind of healthy food. It is also a traditional Chinese food. We often eat it in China. Now, many people in other countries think tofu is good for health, too. They also like eating it.

Milk is another kind of healthy food. You should drink one or two glasses of milk every day.

Vegetables are important, too. You should eat lots of them. There are vitamin A, B, C, D, E (维生素A,B,C,D,E) and other vitamins in them.

Of course, it’s important to eat a balanced diet. You need some pork, chicken or beef every day. But you shouldn’t eat much of them.

小题1:Are healthy foods good for your health?

                                                              

小题2:What’s the traditional food in China?

                                                         

小题3:Why are vegetables important to our health?

                                                               

小题4:Which is a good diet: some beef, some pork, a hamburger and a glass of cola for dinner or some pork, tofu and some vegetables?

                                                            

小题5:What did you have for dinner last night?

                                                           

选择题