Chen Jie: Which season do you like best, Mike ?

Mike: I like summer best.  

Chen Jie: Why do you like summer?

Mike: Because I can eat ice-cream and swim in the lake.

Chen Jie: I don't like summer. It's too hot.  

Zang Peng: What's your favourite season?

Chen Jie: Spring. It's sunny and warm. I can plant trees and fly kites. How about you,

Zhang Peng?

Zhang Peng: My favourite season is winter.

Mike: Why do you like it?

Zhang Peng: Because I can skate and make a snowman. I like snow.

如图所示，用一根结实的绳子在两根光滑木棒上绕几圈，一小朋友用力一拉，两位大力士竟撞在一起了．这幅漫画表明了____．

要调节情绪，必须从提高整体心理活动水平做起。（    ）

如图，把一块直角三角板的直角顶点放在直尺的一边上，如果∠1=28°，那么∠2的度数是（  ）