下列现象能说明生物能对外界刺激作出反应的是[ ]

A．植物落叶 　　　 　　　　　　

B．绿色植物进行光合作用

C．鲸呼吸时产生水柱　　　　　　

D．含羞草受碰触时叶片会合拢

句型转换。

1. Do you have a baseball bat?  (改为肯定句)

     _____ _____ a baseball bat.

2. We have a ping-pong club. (改为否定句)

     We _____ _____ a ping-pong club.

3. Sue plays tennis with her mother. (改为一般疑问句)

     _____ Sue _____ tennis with her mother?

4. Jiang Cheng has a computer. (对画线部分提问)

     _____ Jiang Cheng _____?

5. Betty's keys are in the drawer. (对画线部分提问)

    _____ _____ Betty's keys?