问题 判断题

在正投影前提下,无论长方体如何摆放,其在三个相互垂直投影面上的投影均为矩形。

答案

参考答案:

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       Mr. Jackson began his trip last Saturday. Two days later when he was traveling in the country   1   ,
he saw dog behind a man. As the car came near them, the dog suddenly started to   2   the road. Of
course the car hit the poor animal and killed it.  
       Mr. Jackson   3   his car and walked to the man."I'm very   4   that this happened. "he said. "How
much shall I   5   ? Will ten dollars be enough?"  
      "Oh,yes."said  the  man. "Ten  dollars  will  be   6   enough." Mr. Jackson put his hand into his
pocket,but he only   7   five dollars in the pocket. "Sorry,sir , I've only   8   five dollars." said
Mr. Jackson.    
      "No  problem. That's  enough. "the  man  replied. "Thanks a lot. That's very kind of you. "Mr. Jackson
thanked the man and   9   awa.When the car went a-way,the man looked down at the dog and thought. 
     "I want to know   10   dog it is."

( )1. A. by bus          
( )2. A. go              
( )3. A. started          
( )4. A. sad              
( )5. A. give            
( )6. A. quite            
( )7. A. looked for      
( )8. A. seen.            
( )9. A. drove            
( )10.A. what            
B. by bike    
B. cross      
B. ran        
B. lucky      
B. take      
B. very      
B. looked at  
B. had        
B. ran        
B. whose      
C. by train
C. run      
C. stopped  
C. sorry    
C. bring    
C. much    
C. watched  
C. got      
C. walked  
C. Which            
D. by car        
D. jump          
D. jumped        
D. pleased        
D. pay            
D.so              
D. found          
D. paid          
D. went          
D. where              
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