问题 单项选择题

比较算法和程序,以下说法中正确的是()

A、程序中的指令和算法中的运算语句都必须用高级语言表示

B、算法和程序都必须满足有穷性

C、算法就是程序

D、算法可采用“伪代码”或流程图等方式来描述

答案

参考答案:D

阅读理解

阅读理解

       One evening two young men were walking in the street together. They tried to find a chance to steal

something. The clock struck twelve. Most of the people went to bed. Quickly they came to a house and

it seemed that everyone in the house had fallen asleep. Standing at the front gate , one said in English to

the other in a low voice ,"You wait here. I'll go around to the back door and then get into the house."

Suddenly out of the house ran a dog, barking at them. The two men were very frightened and ran away

as fast as they could. Finally, they stopped at a lonely place. The man said breathlessly, "It's too bad. I

hadn't expected that the dog could understand English."1.Why did the two men walk in the street one

evening ?

1. Why did the two men walk in the street one evening ?

A. they couldn't fall asleep  

B. they wanted to steal something

C. they would like to take a walk  

D. they went to visit their friends

2. "One said in English to the other in a low voice." From this sentence we know ____.

A. he didn't know English  

B. he liked speaking English quietly    

C. he couldn't speak loud  

D. he was afraid of waking up others

3. The dog ran out of the house and barked at them only because _______.

A. it understood English

B. it knew them  

C. it found someone outside  

D. Both B and C

4. At last the two young men _______

A. stole nothing    

B. stole something expensive

C. were bitten by the dog

D. were bitten by the police

5. What did the owners do while the dog was barking ?

A. They stopped it          

B. They got up quickly

C. They shouted for help        

D. The story didn't tell us

解答题