《2025年同步测控优化设计八年级英语上册人教版精编版》

五、阅读理解
Almost all animals need to sleep to stay healthy. But sleeping can be dangerous because other animals may hunt sleeping animals. To help them stay safe, animals have many different ways of sleeping. Some of these ways may surprise you!
Some seabirds can sleep while they fly. These large birds spend most of their lives over the ocean. They are in danger on the water, but they are safe in the air. They glide（滑行）for many hours without moving their wings up and down. Sometimes they sleep while they glide.
A dolphin sleeps with just half its brain at a time. It must stay awake to breathe and to watch for danger. Dolphins can swim without sleep for two months to stay safe. Ducks sleep with just half their brains too. These ducks often sleep in a line. The ducks at both ends help keep the group safe. They keep one eye open to watch for danger. The ducks in the middle sleep with both eyes closed.
Seals breathe air, but that doesn't stop them from sleeping underwater. They hold their breath and dive deep to sleep for up to twenty minutes at a time. Some fish make their own sleeping bags. They make a big bubble and sleep inside it. It also keeps other animals from smelling them. If an animal hits the bubble, the fish swims away quickly.
1. Why do animals have different ways of sleeping?
A. To hunt other animals.
B. To make themselves safe.
C. To surprise other animals.
D. To keep themselves healthy.
2. How do seabirds sleep?
A. By gliding in the air.
B. By resting in the sea.
C. By flying up and down.
D. By staying in the bubbles.
3. Which animals have the same way of sleeping?
A. Fish and seabirds.
B. Seals and seabirds.
C. Dolphins and seals.
D. Dolphins and ducks.
4. Which can be the structure of the passage?（p = paragraph）

A. [img]
B. [img]
C. [img]
D. [img]
5. What's the best title of this passage?
A. Different Ways of Animals' Sleep
B. How to Keep Healthy
C. Stay Away from Danger
D. Animals Can't Live Without Sleep

答案： 1. B 2. A 3. D 4. C 5. A