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                题目内容
                (甘肃开放大学 综合英语2)
            
            
                These devices mounted in the car can _______ driver to an impending hazard.
A.
instruct
B.
warn
C.
dictate
D.
alert
                
                    
                    
                    
                
                
                
            
        A.
instruct
B.
warn
C.
dictate
D.
alert
参考答案
 
                