完形填空。 I go on a trip to Thailand (泰国) with my parents this year, because there are lots of elephants there, and my favorite animal is the elephant. I like elephants very 1 . Elephants are 2 than other living animals on land (陆地). We can sit on their backs (背). It's very cool. Elephants can eat a lot of 3 in a day. My father tells me elephants can live 60 to 70 4 . They can 5 walk in the mud (泥). Elephants are big but they can go quickly. We know elephants have large ears. And elephants grow large 6 . We call them tusks. (     )1. A. much (     )2. A. big (     )3. A. meat (     )4. A. months (     )5. A. easy (     )6. A. tooth B. many B. bigger B. water B. days B. easier B. tooths C. more C. more big C. animal C. weeks C. easily C. teeth D. most D. much big D. grass D. years D. easiest D. teeths