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科目： 來源：期中題 題型：單選題

Scientists overcame (克服) much difficulty they had _____ that technological problem _____ they finally
could send the manned (載人的) spaceship up into space.
[     ]
A. to solve; until
B. solving; before
C. to solve; before
D. solving; until

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科目： 來源：河北省模擬題 題型：單選題

_____ he opened the window, a sparrow flew in.
[     ]
A. Though
B. The moment
C. If
D. Unless

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科目： 來源：河南省模擬題 題型：單選題

They didn't discover until they happened to enter the back room ______ someone had stolen the
priceless painting.
[     ]
A. that
B. what
C. which
D. when

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科目： 來源：山東省模擬題 題型：單選題

______ I admit that the problems are difficult, I don't agree that they can't be solved.
 [      ]
A. In case
B. While  
C. As      
D. Because

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科目： 來源：四川省期中題 題型：單選題

As is well known to us students, it is 104 years        our school was founded.
 [     ]
A. when        
B. before        
C. after            
D. since

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科目： 來源：浙江省期中題 題型：單選題

The roads are crowded ______ walking to work is even quicker than driving.
[     ]
A. in order that  
B. in order to  
C. so as to  
D. so that

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科目： 來源：浙江省期中題 題型：單選題

Experts believe that it will be five or six years ______ the price of houses becomes acceptable
for ordinary families.
[    ]
A. since        
B. after         
C. before      
D. until

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科目： 來源：四川省模擬題 題型：單選題

_______ China implements (實施) its control over the disputed regions, can its sovereignty
and interests be defended.
[     ]
A. If only  
B. Even if
C. Only if       
D. As if

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科目： 來源：四川省模擬題 題型：單選題

But it will be more than 100years _______ the country begins once again to look as it did before.  
[      ]
A. since    
B. that    
C. when    
D. before

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科目： 來源：四川省模擬題 題型：單選題

— Hasn't the thief admitted his crime by now?  
— No, ______ questioned many times.       
[     ]
A. if              
B. though        
C. unless          
D. once

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