— _________?
— It's Wednesday.
A:What is the date today
B:What day is it today
C:What time is it
D:What's the weather like today
下列有关实验的操作正确的是( )
关于“秦岭一淮河”的叙述,错误的是 ( )
如图所示,在电路中滑动变阻器滑片P逐渐向左适当移动的过程中,条形磁铁仍保持静止,在此过程中下列说法正确的是( )