根据短文内容，用方框中所给单词的适当形式填空，每词限用一次。
The panda is one of the most popular 小题1: in the world. A panda can grow up to 1.5 meters long and weigh up to 160kg. People think the panda is very 小题2: . So it is not surprising that the WWF（世界自然基金会）chose the panda as its symbol. The WWF tells people about animals that are in 小题3: and raises money to save them. The panda only 小题4: in the wild in China. In the early 1980s, there were only 1,000 left in the wild. The main reason 小题5: pandas are endangered(濒临灭绝的) is that the area where pandas can live has become smaller.
