句型转换。

1. Tom, sit on the chair, please. (用现在进行时态改写句子)

    Tom                          on the chair.

2. Does the boy come from England? (写出同义词) 

                the boy             England?

3. We would like tomato and egg noodles. (就画线部分提问)

     What                         noodles would you like?

4. I did some reading last weekend. (改为一般疑问句)

                you             some reading last weekend?

5. I was late for school yesterday. (写出同义句)

    I                         for school yesterday.

通常痛风患者的滑膜积液中可找到哪种结晶（）。

A.尿酸盐

B.焦磷酸钙

C.磷灰石

D.脂类

E.草酸钙