阅读理解。     

        Not long before a university professor(大学教授)made several experiments (试验)with different

animals to find out which was the most intelligent. He found out the monkey was more intelligent than other animals.      

        In one experiment the professor put a monkey in a room where there were small boxes. Some boxes were inside other boxes. One small box has some food in it. The professor wanted to watch the monkey

and to find out how long it would take the monkey to find the food. The professor left the room. He waited a few minutes outside the door. Then he knelt (跪下)down and put his eye to the keyhole. What did he

see? To his surprise, he found himself looking directly(正好)into the eye of the monkey. The monkey was

looking at the professor through the other side of the door.      

1. The reading mainly wants to tell us____.    

A. the food is difficult for animals to find         

B. there are too many animals to feed          

C. the result of the experiment on a monkey             

D. the professor was clever to make the experiment     

2. The word "intelligent" in the reading means____.   

A. clever

B. worried     

C. quick    

D. careless  

3. The professor put the food in a small box to___.                

A. give the monkey a surprise        

B. see how the monkey ate from a box      

C. know how soon the monkey could find it       

D. find out how the monkey could open the box 

4. The professor watched the monkey by____.  

A. watching it through the keyhole        

B. waiting outside the door              

C. kneeling down at the door          

D. digging a hole in the door  

5. The experiments were probably(可能)made_____. 

A. in the forest           

B. outside a zoo with many people around           

C.in the forest                   

D. in the professor's home