四、阅读理解。
Do you know that not only the fish but also some other animals live in the sea? For example, a whale is not a fish. It can't breathe in the water. It swims in the water. But it comes up for air. The blue whale is the world's biggest animal. There are other sea animals, too. One is the dolphin. Dolphins need air to live. They breathe the air, as whales do. Dolphins are very clever. They sometimes seem to speak to each other.
Many other animals live near the sea. Seals(海豹) and sea otters(海獭) love the sea. They swim and play there. They eat fish and sea plants. Seals and sea otters have thick fur. The fur keeps them warm.
()1. The blue whales live in the sea. They breathe air as ____ do.
A. dolphins B. fish C. crocodiles D. sea plants
()2. What food do seals and sea otters like eating?
A. Meat. B. Fruits.
C. Leaves. D. Fish and sea plants.
()3. Seals and sea otters can keep themselves warm because ____.
A. they are big animals
B. they like playing in the sea
C. they have thick fur
D. they eat enough food every day
()4. Which of the sentences below is NOT true?
A. The whale can swim in the sea like a fish.
B. The whale can breathe in the sea like a fish.
C. Both whales and dolphins are sea animals.
D. Seals and sea otters like living near the sea.
()5. Where can we probably read the text?
A. In a history book. B. In a science book.
C. In a storybook. D. In a joke book.

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