阅读理解。

     John is a basketball fan (迷). He likes playing basketball very much. His favourite basketball player is

Michael Jordan. He is on the school basketball team. He often plays basketball after school.

     George is John's good friend. He doesn't play basketball. He likes playing volleyball. He plays volleyball

every afternoon.

1. John likes _____. [ ]

A. volleyball

B. basketball

C. baseball

D. ping-pong ball

2. _____ is John's favourite basketball player.[ ]

A. George

B. Michael Jordan

C. Jonald

D. John

3. _____ is on the school basketball team.[ ]

A. John

B. George

C. Jordan

D. John's friend

4. Does George play basketball? [ ]

A. Yes, he does.

B. He likes basketball.

C. No, he doesn't.

D. We don't know.

5. Geoege plays volleyball _____. [ ]

A. every day

B. every morning

C. every afternoon

D. every evening

脊椎动物亚门的主要特征是（）,（），脊柱由单个脊椎连接组成,原生水生种类鳃呼吸，次生水生种类及陆生种类肺呼吸,除圆口类，都具备了上下颌,完善的循环系统,肾代替了肾管,除圆口类外，都有成对附肢.