按要求改写句子。

1. He speaks English better than any other student in the class. (改为同义句) 

    He ____ ____ ____ ____ his class.

2. I think Eliza is the best performer. (对画线部分提问)

    ____ ____ ____ ____ is the best performer?

3. They sang a cute song together. (改为否定句)

    They ____ ____ a cute song together.

4. The dog lies on the ground. (用now改写)

    The dog ____ ____ on the ground ____.

5. Beijing is very hot in summer. (对画线部分提问)

    ____ ____ ____ ____ in summer in Beijing?

金钱白花蛇的特征是

A．背部银灰色，有绿色斑点
B．背部黑色或黑棕色，有多条白色环纹
C．背部高耸成屋脊状，俗称“剑脊”
D．背部黑色，有红色环纹
E．背部有24个灰白色菱方形斑纹