完形填空

We sometimes call the lion "the king of the forest" , because it is stronger and more dangerous than other animals. It can 1 faster than many animals and hunt the best. It is the highest animal in the 2food chain (食物链).

In the sea, the shark is one of the animals at the top of the food chain. It can swim faster than 3other sea animals, and it can use its big teeth to eat them.

What is at the top of the world's food chain？ People are! We are not the biggest or fastest, but we are the 4. We could not run faster than cheetahs (猎豹), so we 5cars and now we can move the fastest. We could not fight better than lions, so we invented guns. Now we can hunt the best.