试题与答案

So difficult______ it to acquire a large

题型:选择题

题目:

So difficult______ it to acquire a large vocabulary without the help of a teacher that he was close to giving up .

A.he have felt

B.have he felt

C.he did feel

D.did he feel

答案:

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答案:D题目分析:A、不同元素组成的物质也可能是混合物,错误;B、金属与硝酸反应,一般不生成氢气,错误;C、酸与碱生成盐和水的反应是中后反应,酸性氧化物与碱、碱性氧化物与酸反应也生成盐和水,不是中后反...

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( )1.   A. gave            
( )2.   A. like            
( )3.   A. sound            
( )4.   A. animals          
( )5.   A. sharing          
( )6.   A. anything        
( )7.   A. familiar        
( )8.   A. shut out        
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( )10.  A. bent            
( )11.  A. Falling          
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( )13.  A. and              
( )14.  A. Thus            
( )15.  A. walked          
( )16.  A. rapidly          
( )17.  A. bedroom          
( )18.  A. at the bottom of
( )19.  A. regretting      
( )20.  A. never 
          
B. chose            
B. as              
B. alarm            
B. friends          
B. visiting        
B. nothing          
B. lovely          
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B. Lying            
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B. ruddenly        
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B. ever            
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C. oise        
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C. or          
C. Then        
C. returned    
C. madly        
C. yard        
C. at the top of
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