问题 单项选择题

批处理操作系统的主要缺点是

A.系统吞吐量小

B.用户不能直接控制其作业的执行

C.不具备并发性

D.系统资源利用率不高

答案

参考答案:C

阅读理解

阅读理解

     A large number of people in the world eat fast food. Whenever you go into a fast food restaurant,

you can see lots of people enjoying their meals there. How do you know in which country people like

fast food best?

     The English people are the world's biggest fans of fast food, while the French (法国人) are the least

interested in quick meals, according to a survey done last year.

     The survey of thirteen countries shows 45% of the English people say they can't give up fast food

because it's delicious. And 44% of Americans and 37% of Canadians say the same.

     The French, proud of their delicious and high-class cuisine, don't like fast food. 81% of them think it

is unhealthy, followed by 75% of the Japanese.

     How about the Chinese? How often do you have hamburgers or fried chicken? It doesn't matter

whether you like Western fast food or Chinese food. The most important thing is to keep a balanced

diet.

1. From the survey we know ________ like fast food best.

A. the Chinese

B. the French

C. Japanese

D. the English

2. The survey shows ________ of Americans like fast food.

A. 37%

B. 44%

C. 75%

D. 81%

3. According to the survey, some people can't give up fast food because ________.

A. it's cheap

B. it's safe

C. it's delicious

D. it's healthy

4. The word"cuisine"in the passage means ________.

A. food

B. house

C. water

D. country

5. The survey is about ________.

A. Western countries  

B. fast food  

C. restaurants in the world  

D.Chinese food

填空题