A: Would you mind repairing the MP3 player for me?
B: ______.
A:Never mind
B:Don't worry
C:Not at all
D:I'm glad you like it
如图所示,小朋友沿着滑梯匀速下滑的过程中,下列说法中正确的是( )
大西洋形成的原因是( )