题目

Some people like wearing fashionable clothes; ______, some birds like bright feathers. A. possibly    B. likely   C. luckily   D. similarly   答案：D如图所示，一根通有电流I1的固定长直导线在通有电流I2的矩形线圈的平面内，线圈将会出现（　　）A．远离导线运动B．向着导线平动C．绕轴OO′运动D．绕轴NN′运动