Are bats useful animals?

Are bats useful animals? （1）Are bats useful animals?(2)What do bats eat?(3)Do bats ha 英语文章首字母填空、Bats are the only flying "animals".It is known to bats are the only flying animals in the world急求整篇文章 Bats are the only flying animals in the world in the world i horses are useful animals/ a horse is a useful animal.马是有用的动 Dogs are very useful animals.And they are verypopular(流行)bec 帮忙翻译英语短文.The animals are useful to the desert people in many 英语翻译大象是一种有用的动物.elephants are useful animals elephant is an u Animals are very___to man.A.useful B.lazy C.smart D.sad bats ar the only flying 'animals 'in the world. why are dictionaries useful?