bats are the only flying animals in the world急求整篇文章

bats are the only flying animals in the world急求整篇文章

蝙蝠是世界上唯一能飞行的野兽

Bats are the only flying mammals（哺乳动物）in the world．They can’t see very well，but people believe they have no trouble（干某事不困难）flying on darkest nights and finding their way around very well．How can bats fly（飞）and see at night? They fly by radar（雷达）． The bat’s radar system（系统）works the same as ships and planes do．As a bat flies through the air，he makes a sound（声音）．The sound is high enough for his message．In this way it tells the bat where the thing is． Bats go out to look for food only at night．In the daytime（白天）they rest in some dark places．