总局第116号令《高耗能特种设备节能监督管理办法》规定，电梯产品在（）时进行能效测试

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。

why    animal    danger    live    lovely

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 is that the area where pandas can live has become smaller.