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题目
题型:北京期中题难度:来源:
They were        to produce carbon,nitrogen,water and other gases. [     ]
A. in time          
B. at a time    
C. at one time        
D. on time
答案
A
核心考点
试题【They were        to produce carbon,nitrogen,water and other gases. [     ]A. in 】;主要考察你对介词和介词短语等知识点的理解。[详细]
举一反三
He could see the tall buildings      __   .[     ]
A. in the distance        
B. in distance        
C. from distance        
D. to a distance
题型:北京期中题难度:| 查看答案
—  Are you really through with your work assigned the day before yesterday?
—        , I"ve only just begun .[     ]
A. On the contrary  
B. On the other hand
C. Right you are
D. Never mind  
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The project        my students are working is quite challenging because it involves many professional skills. [     ]
A. for which
B. on which    
C. of which
D. at which
题型:湖南省月考题难度:| 查看答案
The farm grows various kinds of crops, _______ wheat, corn, cotton and rice.  [     ]
A. for example   
B. as          
C. so that       
D. such as
题型:河北省月考题难度:| 查看答案
They had a pleasant chat _______ a cup of coffee.   [     ]
A. for        
B. with      
C. during      
D. over
题型:河北省月考题难度:| 查看答案
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