题型:阅读选择 题类: 难易度:普通
There's nothing better than having a sweet sleep after a full day of tiring work. Like people, animals need to rest after working hard, too. Some animals sleep in water while others dig holes under the ground. Some even sleep high in trees or under the leaves. Although they sleep in different ways, all of them find ways to have a good rest.
Some animals in the sea sleep in strange ways. For example, fish sleep with their eyes open. They seem to look ahead far into the sea when they take breaks. Sea otters(海獭)sometimes sleep in beds of the plants that grow in the sea. This keeps them from moving away. Parrotfish(鹦嘴鱼)blow something from their mouths when they are ready to sleep. Then a bubble(气泡)will be formed around them. The bubble protects them from danger while they sleep.
Some animals sleep under the ground. Chipmunks(花栗鼠)sleep curled up(蜷缩)in a ball. Their beds are made of leaves and grass. In winter, they sleep for two weeks and wake up to eat the food. Then they go back to sleep for another two weeks before waking up again. Some desert frogs(青蛙)dig underground holes during the hot and dry season. A frog may stay in its hole for months.
High above the ground, monkeys find places in trees each evening before they sleep. The tall trees help to keep monkeys safe during the night. Some insects(昆虫)even sleep under the leaves that will be their next meal. A bee may climb down into a flower to rest. When it climbs out the next morning, it rests well and is ready for work.
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