根据句意及所给的中文提示，写出单词的正确形式。

1. We are writing to you about _____ (保护) wild animals.

2. If farmers _____ (继续) to make new farmland, wild animals won't get enough food.

3. His job is _____ (喂) animals.

4. You can know the weight of the apples after _____ (称重量) it.

5. Hunters will make a lot of money if they sell _____ (大象) tusks

在坐标平面内，点P（4-2a，a-4）在第三象限．则a的取值范围是（　　）

A．a＞2

B．a＜4

C．2＜a＜4

D．2≤a≤4