根据中文或首字母提示填写单词使句意完整。

1. Do you think e______ are the largest animals on land?

2. I can't u______ what you are saying.

3. Our school is in the south of the park. The park is n______ of our school.

4. I can't dance at all. It's so d______ for me.

5. Don't w______ about me. I'm very well now.

防止室内环境质量恶化的有效措施是

（1）经常使室内室外自然通风 （2）加强环保意识，使用绿色建材 （3）吸烟时通风可减少吸烟人中毒 （4）常晒被褥可达到杀菌的作用 （5）注意个人卫生，勤洗勤换衣物 （6）注意不用被污染的水源 [ ]

A．（1）（2）

B．（1）（3）（5）

C．（1）（3）（6）

D．（2）（4）（6）