We all know that sleep is a very important and necessary part of our lives. After a long day, we all like the feeling of a soft bed. We know how good it will feel in the morning after we get some rest. But do you know that sleep is also very important to animals? Animals also need sleep after they work hard.
Some animals sleep in the sea. Fish have no eyelids (眼睑), so they sleep with their eyes open! Otters sleep in seaweed (海草) on top of the sea. The seaweed keeps the otters from moving along. Most sharks keep swimming while they sleep. Some fish find a little hole in the coral (珊瑚) and hide so that they can sleep. The clown fish turns on its side to sleep at the bottom of the sea.
Some animals sleep under the ground! When it’s hot, many frogs sleep in a hole because they want to avoid the heat. Some frogs spend the whole summer in their holes. Groundhogs live in holes in the ground, so they also sleep underground. Foxes sometimes steal a groundhog’s home and use it as their own home.
What about animals that live above the ground? Birds sleep in their nests or in trees. A bird’s claws (爪子) close when they sleep. This helps them stay in the tree. Bats sleep upside down for twenty hours a day!
No matter what kind of animal you are, you need your sleep to stay in good health.
49. When will we feel good in the morning?
A.After having breakfast. | B.After taking a shower. |
C.After getting some rest. | D.After taking some exercise. |
50. Why do fish sleep with their eyes open?
A.Because they keep swimming. | B.Because they have no eyelids. |
C.Because they sleep in seaweed. | D.Because they sleep in the coral. |
51. Why do many frogs spend the summer in the holes?
A.To lay eggs. | B.To get food. |
C.To avoid the enemies. | D.To avoid the heat. |
52. The passage tells us that ________.
A.only people need sleep | B.all animals need sleep |
C.birds need sleep in the tree | D.foxes sleep in their own holes |