精选优质文档-倾情为你奉上What is the highest mountain in the world? Mount Qomolangma.Which animal can live the longest in the world? Whales.Which animal is the fastest in the water? SailfishWhat is the longest river in China? The Changjiang River.Which animal is the fastest on land? Cheetahs.What is the longest river in the world? The Nile River.Which animal can live for about 70 years? Elephants.