物体自t=0开始做初速度为零的匀加速直线运动，已知在t时间内通过的位移为。则关于在处的速度v₁和在时刻的速度v₂，下列判断正确的是 (   ）.

A．v₁>v₂

B．

C．

D．

Mary is really good at taking notes in class. She can ________ almost every word her teacher says.[ ]

A. put out            

B. put down        

C. put away          

D. put together