根据括号内的要求完成句子，每空一词（含缩写）。

1. Is Jenny your daughter? (作否定回答)

    No, _________ _________.

2. I have three notebooks. (改为一般问句)

    _________ you _________ three notebooks?

3. Those are oranges. (改为单数句)

    _________ is _________ orange.

4. These are his pencil sharpeners. (改为否定句)

    These _________ _________ his pencil sharpener.

5. My pencil case is in my backpack. (对划线部分提问)

    ________ ________ your pencil case?

6. His balls are black and white. (对划线部分提问)

    ________ ________ are his balls?

下列哪种情况称为负辐射（）

A.当周围物体表面温度超过人体表面温度时，周围物体对人体发射热辐射

B.当周围物体表面温度低于人体表面温度时，人体向周围物体辐射散热

C.当周围空气温度高于人体表面温度，人体散热困难

D.当周围空气温度低于人体表面温度，人体容易散热

E.以上都不是