完形填空。 We sometimes say the lion is 'the king of the jungle' because it is stronger and 1 than the other animals. It can run faster than 2 other animals and it canhunt the 3 . The lion is the _ 4 animalin the land food chain. In the sea, theshark is at the top of the food chain. What is at the top of the world's food chain? People are! We are not the biggest of fastest, but we are the 5  . We could notfight 6 than a lion, so we invented guns. Now we can hunt the best. People's inventions are clever, but they can 7 , too. For example, many years ago in Inner Mongolia,  people 8 guns to kill a lot of wild wolves.  Then thenumber of wild rabbits is becoming 9 because there is no wolf eating them. Thewild rabbits competed for the grass with the sheep and cows. Much of the grasslandbecame desert because it was seriously 10 by the rabbits. Remember that we are a part of the food chain, so we are in danger, too! If we protect animals, we are protecting ourselves. (     )1. A. dangerous (     )2. A. less (     )3, A. better (     )4. A. high (     )5. A. cleverest (     )6. A. better (     )7. A. dangerous (     )8. A. uses (     )9. A. smaller and smaller (     )10. A. destroyed B. dangerouser B. least B. bad B. highest B. cleverer B. good B. more dangerous B. used B. bigger and bigger B. destroyed C. more dangerous C. most C. best C. tallest C. clever C. bad C. be dangerous C. using C. big and big C. destroy