如图所示,能够说明“磁生电”的是
C、D
A项奥斯特实验表明通电导体周围存在磁场;B项是研究电磁铁的特点;C、D两项表明“电磁感应”现象即“磁生电”。
—Mum, shall I watch the TV program Happy Camp today?
—__________.You have so much homework to do!
A.Forget it
B.Not at all
C.Go ahead
D.That’s right
攀登作业可借助梯子上下时怎么操作?