下列有关厨房的物理知识，说法正确的是[ ]

A、拧开醋瓶盖，醋味扑鼻——分子在做无规则的运动

B、在水中下饺子，饺子不会被煮焦；在油中煎饺子，饺子易被煎焦——油的沸点比水高

C、洗碗时，油花漂在水面上——油的密度比水小

D、菜刀刀口磨得很锋利是为了增大压力

As most of their houses were badly damaged after the earthquake，many people had to be________in

a stadium.[ ]

A．put away  

B．put out

C．put up  

D．put off