句型转换。

1. We have a basketball game. (改为一般疑问句)

    ______ ______ ______ a basketball game?

2. The school trip is October 30th. (对划线部分提问)

    ______ ______ the school trip?

3. My uncle is thirty. (同上)  

    ______ ______ is your uncle?

4. Mary, are you thirteen years old? (作否定回答)

    ______, ______ ______.

5. What's your age? (同义句)  

    ______ ______ are you?

气分装置应用的高速泵都是（）级叶轮。

A、1

B、2

C、3

D、4