网址：http://m.1010jiajiao.com/timu3_id_3261027[举报]
Read the passage and choose the correct answer
Bats can fly in the sky with their wings but they have teeth. They are (1) birds, they also have legs, but they can't (2) .
Bats have eyes, but they can see nothing. How can they catch insects? A bat makes sounds (3) it flies. If a bat meets with something, the sounds go back to the bat's ears. Then it can (4) whether(是否)it is a wall or a flying insect in front of it.
In the day time you can't see even a bat (5) . Bats always hide themselves in dark places. When they rest they hang themselves. In the evening they fly out. They catch insects for food and kill(杀死)a lot of bad insects (6) people. From all these above, we know they are useful animals, but some people think them to be bad animals.
(1)
[ ]
(2)
[ ]
(3)
[ ]
(4)
[ ]
(5)
[ ]
(6)
[ ]