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科目： 來(lái)源：北京模擬題 題型：單選題

You can get to your destination earlier ______ you don't mind taking the night train.  
[      ]
A. if    
B. unless    
C. though    
D. until

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科目： 來(lái)源：河北省模擬題 題型：單選題

You can't appreciate happiness _______ you have known sadness too.   
[     ]
A. because          
B. when          
C. though            
D. unless

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科目： 來(lái)源：山東省模擬題 題型：單選題

   __  it was hard for children to leave family and friends, many families chose to send their children
to America.    
[     ]
A. Because
B. Although    
C. If    
D. As

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科目： 來(lái)源：上海模擬題 題型：單選題

Scientists estimate that plants and animals lived _____ 3.5 billion years ago.
[     ]
A. as far as
B. as many as
C. as long as
D. as old as

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科目： 來(lái)源：上海模擬題 題型：單選題

Facing a beggar, I may feel this poor person needs help, and the need will not be met _____ I put my
hand in my pocket now.
[      ]
A. since
B. in case
C. unless
D. while

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科目： 來(lái)源：上海模擬題 題型：單選題

_____ you've tried it, you can't imagine how tasty the fish I cooked is.  
[     ]
A. Because      
B. Unless        
C. Although      
D. So long as

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科目： 來(lái)源：上海模擬題 題型：單選題

It has come to be realized ______ particular matters in the air expose us to life's real danger.
[     ]
A. what      
B. which      
C. when          
D. that

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科目： 來(lái)源：四川省月考題 題型：單選題

He made a mistake, but then he corrected it _____ it got worse.
[     ]
A. until    
B. when    
C. before    
D. as

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科目： 來(lái)源：廣西自治區(qū)期中題 題型：單選題

______the bad weather, they finished all the work on time.  
[      ]
A. Though  
B. Because of  
C. No matter how  
D. Despite

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科目： 來(lái)源：海南省期中題 題型：單選題

— Some Chinese students find it hard to get used to the life in London.  
— Exactly, ______ they've learnt a lot about the city before.
 [     ]
A. if
B. now that
C. as though
D. even though

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