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四、(原版外刊)阅读理解。
Beavers(河狸) are the biggest rodents in North America. They have strong, orange teeth that can chew(咀嚼) through trees. Just like people build houses, beavers build dams(坝) and homes in the water!
When building a dam, beavers also make their home. In the middle of a pond, they pile(堆) up mud, rocks, and sticks to make a round, messy house. The top has a small opening for air, but the doors are underwater, so other animals can't get in. Inside, there's an empty space with a platform made of rocks and mud. The beavers line it with grass and wood to make a warm home. This is where the family stays all winter—and for many years!
Beavers are great swimmers. They move faster in water than on land, so they dig water paths (called channels) from the pond into the forest. Swimming with tree branches through these channels is easier than pulling them on land. They also dig safety tunnels to the pond, so they can hide quickly if in danger.
Beavers even use their pond as a fridge! All summer, they collect leaves and tree bark(树皮) to eat in winter. They cut leafy branches and store them underwater near their home. The cold water keeps the food fresh. Even if the pond freezes, their food stays safe and ready to eat.
Beaver dams are never done! They always have to fix holes, add more sticks, or move rocks. If they hear water running, they rush to repair the dam. As soon as one dam is built, they start another. Some beaver families build a row of dams on the same river, along with two or three homes.
Beavers work hard together, using their teeth and tails to build amazing homes. They're like little engineers of the forest!
(素材选自 *Ask*)
1. Why do beavers dig water paths to the forest?
A. To meet other beavers.
B. To collect food more easily.
C. To create swimming pools.
D. To stay away from other animals.
2. What is the writer's purpose in writing Paragraph 4?
A. To explain how beavers store food for winter.
B. To show why beavers' ponds freeze in winter.
C. To describe the living habits of beavers in summer.
D. To compare beavers' food storage methods with refrigerators.
3. What do beaver families often do after finishing building one dam?
A. They look for a new river to build dams.
B. They stop building and rest for a long time.
C. They immediately start building another dam.
D. They break the dam and start from the beginning.
4. Which of the following is the best title for the passage?
A. How beavers build a dam
B. Beavers: nature's little engineers
C. How beavers store food for winter
D. Beavers: the swimmers of North America
Beavers(河狸) are the biggest rodents in North America. They have strong, orange teeth that can chew(咀嚼) through trees. Just like people build houses, beavers build dams(坝) and homes in the water!
When building a dam, beavers also make their home. In the middle of a pond, they pile(堆) up mud, rocks, and sticks to make a round, messy house. The top has a small opening for air, but the doors are underwater, so other animals can't get in. Inside, there's an empty space with a platform made of rocks and mud. The beavers line it with grass and wood to make a warm home. This is where the family stays all winter—and for many years!
Beavers are great swimmers. They move faster in water than on land, so they dig water paths (called channels) from the pond into the forest. Swimming with tree branches through these channels is easier than pulling them on land. They also dig safety tunnels to the pond, so they can hide quickly if in danger.
Beavers even use their pond as a fridge! All summer, they collect leaves and tree bark(树皮) to eat in winter. They cut leafy branches and store them underwater near their home. The cold water keeps the food fresh. Even if the pond freezes, their food stays safe and ready to eat.
Beaver dams are never done! They always have to fix holes, add more sticks, or move rocks. If they hear water running, they rush to repair the dam. As soon as one dam is built, they start another. Some beaver families build a row of dams on the same river, along with two or three homes.
Beavers work hard together, using their teeth and tails to build amazing homes. They're like little engineers of the forest!
(素材选自 *Ask*)
1. Why do beavers dig water paths to the forest?
A. To meet other beavers.
B. To collect food more easily.
C. To create swimming pools.
D. To stay away from other animals.
2. What is the writer's purpose in writing Paragraph 4?
A. To explain how beavers store food for winter.
B. To show why beavers' ponds freeze in winter.
C. To describe the living habits of beavers in summer.
D. To compare beavers' food storage methods with refrigerators.
3. What do beaver families often do after finishing building one dam?
A. They look for a new river to build dams.
B. They stop building and rest for a long time.
C. They immediately start building another dam.
D. They break the dam and start from the beginning.
4. Which of the following is the best title for the passage?
A. How beavers build a dam
B. Beavers: nature's little engineers
C. How beavers store food for winter
D. Beavers: the swimmers of North America
答案
1. B
2. A
3. C
4. B
2. A
3. C
4. B
