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问题 单项选择题

从Windows环境进入DOS方式后，返回Windows环境的命令为（）

A、QUIT

B、WIN

C、EXIT

D、ESC

答案

参考答案：C

解析：

Windows可进入系统自带的DOS方式。其中QUTT命令用于退出UCDOS方式，WIN用于在纯DOS方式下进入Windows，ESC用于中断当前程序的运行。

完形填空
完形填空。
      Helen was seven years old. One day one of her teeth began to hurt. She     1    in class at school, and her teacher       2    kindly," What's the matter, Helen?"
      "One of my teeth hurts," answered Helen.
      "Tell your mother about        3  ," said the teacher, "and then go to see the dentist. "
      That afternoon Helen told her mother about her tooth, and her mother      4   her to the dentist's a few hours    5   . The dentist looked at the tooth and then said to Helen. "It's very      6          . I'm going to pull it    7   , and then you're going to get a new tooth. It will be as nice as   8    next year. " Then he did it with no trouble.
       The next day Helen's teacher asked her about the tooth. She said to her,  " Does it    ______9     hurt, Helen?"
       "I don't know. You'd better ask the dentist," Helen answered.
       "Why?" the teacher asked.
       "Because the dentist has   10   it," Helen answered
( )l. A. cried    
( )2. A. spoke    
( )3. A. her      
( )4. A. brought  
( )5. A. only      
( )6. A. hurt      
( )7. A. on        
( )8. A. the other
( )9. A. much      
( )10.A. kept      		B. talked    
B. told      
B. him      
B. took      
B. ago      
B. well      
B. in        
B. the one  
B. very      
B. pulled    		C. shouted    
C. shouted    
C. it        
C. put        
C. later      
C. healthy    
C. out        
C. another    
C. still      
C. done       		D. laughed      
D. asked        
D. them        
D. got          
D. before      
D. bad          
D. off          
D. the others  
D. also        
D. thrown      
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单项选择题

下列哪一项临床或声像图表现与子宫发育畸形无关（）

A.原发性闭经

B.不孕

C.习惯性流产

D.难产

E.子宫内膜增厚
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