关于密闭容器中气体的压强，下列说法中正确的是(   )

A．是由气体受到的重力所产生的

B．是大量气体分子频繁地碰撞器壁所产生的

C．压强的大小只决定于气体质量的大小

D．容器运动的速度越大，气体的压强也就越大

Woman: Are you going to Hawaii on your vacation
Man: Not this year. I am broke.
Woman: Oh! Come on.
Question: How does the woman take the man’s words

A. She thinks he’s not serious.
B. She feels sorry for the man.
C. She is surprised.
D. She is amused.