根据短文内容，回答问题。

     Birds can fly and bats can, too. But, is a bat a kind of bird? No, a bat is not a kind of bird. They are

different animals.

     A bat has four legs. A bird has only two. Bats have teeth and birds have no. Bats have large ears but

bird's ears only holes in the head.

     All bats like to eat insects (昆虫). They eat at night and sleep in the daytime. In the evening bats are

busy flying and catching insects. Its legs help it to fly. The piece of skin (皮肤) joins them together. It is

just like a wing.

     Some people think bats can't see. In fact it is not true. Bats have eyes, but they cannot see well. Bats

have better ears than men have. They can hear things which people can't. They can feel where a thing is.

That is why the bats can fly about in the evening.

1. Is a bat a kind of bird?

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2. Are bat's ears bigger than bird's? 

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3. Why can bats fly about in the evening? 

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4. Can a bat see well? 

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5. What helps a bat fly? 

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