问题 选择题

(2008年广东卷,文科基础,67)下列实验不能达到目的的是

A.往酸性KMnO4溶液中通入乙烯验证乙烯的还原性

B.加热氯化铵与氢氧化钙固体混合物制取氨气

C.用二氧化锰和稀盐酸反应制取氯气

D.用四氯化碳萃取碘水中的碘

答案

答案:C

A项中乙烯能被酸性高锰酸钾氧化,从而使高锰酸钾褪色,从而说明乙烯具有还原性,该项正确;B、D正确;C项中二氧化锰和浓盐酸反应制氯气。

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

单项选择题 A1/A2型题