关节在运动中所起的作用是  [ ]

A．连接作用

B．杠杆作用

C．支持作用

D．支点作用

根据对话语境和所给首字母，完成对话

A: What's your favourite sport?

B: I like p   1   table tennis. Do you like it?

A: Yes,but I can't play w  2  .

B: Would you like to play w  3   me tomorrow morning?

A: Certainly. But I am a   4   I can't play as well as you.

B: Never m   5  . Anyway you know practice makes perfect.

A: Well,how a  6  at eight o'clock?

B: OK.You won't f   7   to bring a ball, will you?

A: Of c  8   not.

B: So long! .

A: Bye.