如图所示,矩形线圈abcd位于通电长直导线附近,线圈与导线在同一平面内,线圈的ad、bc边与导线平行.下面的操作不能使线圈中产生感应电流的是( )
A:使线圈水平向左平移
B:使线圈水平向右平移
C:使线圈竖直向下平移
D:使线圈以bc边为轴转动
——Though radio and television are ____ popular in the world today, I think the TV is ____ useful.——Of course, on TV we can see and hear what is going on home and abroad.
When I passed the classroom, I heard a girl ____ in it.