题目

I'm afraid that is exactly the problem with your dictation, never_____ sense of what you hear. How can you hold in your memory something you don't understand?        A. trying to make                                             B. trying making        C. to try making                                               D. try to make如图，菱形ABCD的周长为20，点A的坐标是（4，0），则点B的坐标为（　　）A．（3，0）B．（4，0）C．（0，3）D．（0，4）