Listen to part of a talk about how bats find their food. – Luyện nghe VSTEP Part 3 – Bài nói, bài giảng

1. What does the speaker say about the saying "as blind as a bat"?

A. It is only true for fruit bats.B. It is true for most bats.C. It comes from an old story about bats.D. It is wrong, because all bats can see.

2. Why can't people usually hear bats' calls?

A. The calls are too quiet.B. The sounds are too high for human ears.C. Bats only call when people are asleep.D. The calls are too short.

3. What can a bat learn from the echoes?

A. how high it is flyingB. how far away other bats areC. where an object is, its size and its directionD. only the colour of an object

4. Why does a bat call faster as it gets closer to an insect?

A. to get more informationB. to save energyC. to call other batsD. to frighten the insect

5. How do many fruit bats find their food?

A. mainly with echoesB. mainly with their eyes and sense of smellC. by following beesD. by listening for insects