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                题目内容
                (国家开放大学管理英语3)
            
            
                Apple almost lost its dominance in the smartphone market ________ it became clear that it was difficult to make a call using the much expected iPhone 4.
选择一项:
A.
when
B.
that
C.
where
                    
                    
                    
                
                
                
            
        选择一项:
A.
when
B.
that
C.
where
参考答案
 
                