看图，用适当的单词完成对话。

1. —Where _____ your father's badnunton(羽毛球)_____?

       —They are _____ the desk.

2. —What are those?

      —They are _____.

      —Do you like _____?

      —Yes, I often have them _____ dinner.

3. —What _____ this in English?

    —It's a _____.

    —How do you _____ it?

    —P-H-O-N-E.

    —What is your phone _____?

    —It's 835 - 223986.

物体做平抛运动时，它的速度的方向和水平方向间的夹角α的正切tgα 随时间t变化的图像是下图中的[ ]

A．

B．

C．

D．