作业帮谁有介绍鲨鱼的英语文章,要短的,
来源：学生作业帮 编辑：作业帮 分类：英语作业 时间：2024/05/19 06:30:42
谁有介绍鲨鱼的英语文章,要短的,
比如说速度阿,大小阿.
比如说速度阿,大小阿.
Sharks (superorder Selachimorpha) are a type of fish with a full cartilaginous skeleton and a highly streamlined body.They respire with the use of five to seven gill slits.Sharks have a covering of dermal denticles that protect their skin from damage and parasites and improve fluid dynamics; they also have replaceable teeth.[1] Sharks range in size from the small dwarf lanternshark,Etmopterus perryi,a deep sea species of only 17 centimetres (7 in) in length,to the whale shark,Rhincodon typus,the largest fish,which grows to a length of approximately 12 metres (39 ft) and which,like baleen whales (the only larger extant animals),feeds only on plankton,squid,and small fish through filter feeding.The bull shark,Carcharhinus leucas,is the best known of several species to swim in both salt,freshwater and in deltas.[2]