as far as I know, tourist，huge，dangerous，meter, weigh，protect，ocean |
I'm Amy Black．I have never seen sharks in the____．But as a(n)____，I have seen sharks in an aquarium(水族馆)．
____，there are between 200and 250 kinds of sharks of different sizes．Sharks are much____than other fishes．The largest carl be as long as 15____ largest shark____about 3，200 kilos．Usually sharks don't attack(攻击)people．Sometimes they attack people____themselves．One of____sharks is the Great White Shark．They attacked a lot of people on the beaches of America．
