题目

 如图3所示,下列四幅图对应的说法正确的是  (      )  A.如图甲,通电导线周围存在着磁场,将小磁针移走,该磁场消失B.如图乙,闭合开关,通电螺线管右端为N极C.如图丙,闭合开关,保持电流方向不变,对调磁体的N、S极,导体的运动方向不变D.如图丁,闭合开关,只要导体在磁场中运动,电路中就一定会有感应电流—How do you find the TV play? —    .     A. I very like it               B. It's in the desk     C. It's very moving              D. I don't like it at all  
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