— Which do you prefer, orange or coke?
— ________. I want a cup of tea.
直线y=kx+b与曲线y=x3+ax+1相切于点(2,3),则b的值为( )
如图所示,磁场与线圈平面垂直,先后以速度v1和v2匀速把一矩形线圈拉出有界匀强磁场区域,v1=3v2.在先后两种情况下( )
— You are welcome. Now it's easier _____ you to understand it.
Miss Brown is a friend of ______.