(云南昆明期中)It's late at night. The whole world around seems to be asleep. But is it?
Lots of things happen outside at night. Many animals move around and look for food when we sleep. These are called nocturnal animals. You might see some during the day, but most rest and sleep in the daytime.
Nocturnal animals use all their senses(感官) at night. But some senses are more important. Owls(猫头鹰), for example, can see really well at night. They have great eyesight. Field mice use their good sense of smell to find food. Red foxes depend a lot on their hearing.
Bats use sound to move around and catch insects. They send out sound pulses(声脉冲) that reflect off things. They listen to the echoes to know where things are. Bats have special ear flaps. They cover their ears when making sounds, and then uncover them. This helps bats tell the sounds apart.
Many insects like moths, fireflies, and mosquitoes are nocturnal. Some think all nocturnal insects like light, but many don't—they stay away from it.

()1. According to the text, which of the following animals are nocturnal animals?
A. Owls and bats.
B. Dogs and cats.
C. Rabbits and monkeys.
D. Elephants and bears.
()2. Which sense do field mice use to find food at night?
A. Sight.
B. Touch.
C. Smell.
D. Hearing.
()3. How do bats use sound to find their way around and catch insects?
A. They make sounds to talk to each other.
B. They use sound to make insects come out.
C. They listen to the sounds made by other animals.
D. They send out sound pulses and listen to the echoes.
()4. Which of the following statements is TRUE?
A. All nocturnal insects like light.
B. Many nocturnal insects don't like light.
C. All nocturnal insects are afraid of bats.
D. Nocturnal insects come out in the rain.
()5. What is the main idea of the text?
A. How bats find their food.
B. Why some animals are nocturnal.
C. What happens to nocturnal animals at night.
D. The importance of different senses for animals.

B. 1. A 2. C 3. D 4. B 5. C