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.

人体的运动系统由____、____和____组成，运动除依靠运动系统外，还需要____和激素的调节．运动所需的能量，要依靠____、

____和消化等系统的配合．

Would you like some ____(milk)?