Debbie is growing fast. She is even than her mother .
A:tall
B:taller
C:tallest
D:the tallest
It's 6:00 in the evening. It's time to_____.( )
如图所示,在探究“什么情况下磁可以生电”的实验中,保持磁体不动,闭合开关,导体ab水平向右运动,灵敏电流计指针向左偏转.下列说法正确的是( )