听第二篇短文，回答16～20小题。
16. What does the speaker think of bats?
A. Amazing. B. Funny. C. Cute.
17. What colour are most bats?
A. Black. B. Brown. C. Orange.
18. What does a bat do when it flies through the air?
A. It hits things.
B. It makes a sound.
C. It receives messages with its eyes.
19. Why do bats sleep during the day?
A. Because they are very lazy.
B. Because they are very tired.
C. Because they can't see well in the daytime.
20. What is true about bats?
A. They are very helpful.
B. Some of them are white.
C. They are a kind of bird.

16.A 17.B 18.B 19.C 20.A