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二、阅读理解。
Camouflage is a common survival skill in nature. Many animals use camouflage to hide from predators（捕食者）or catch prey（猎物）. Camouflage means that an animal's color, pattern or shape matches its living environment, making it difficult to be seen.
Some animals change their colors to match their living environment. For example, chameleons can change their colors to match the colors of the leaves, branches or rocks around them. This helps them hide from predators and catch prey. Arctic foxes also change their colors. In winter, their fur is white, which matches the snow. In summer, their fur turns brown or gray, which matches the tundra（苔原）.
Some animals have a pattern on their bodies that matches their living environment. For example, zebras have black and white stripes. These stripes make it difficult for predators to single out one zebra from a group. Tigers have orange fur with black stripes. These stripes help them hide in the grass and bushes when they hunt.
Some animals have a shape that matches their living environment. For example, stick insects look like sticks. They can stay still for a long time, making it difficult for predators to find them. Leaf insects look like leaves. Their body shapes and colors are very similar to leaves, which helps them hide from predators.
Camouflage is a clever survival skill. It shows the wisdom of nature. Animals use camouflage to survive in the wild. This is an important part of the food chain and ecological balance.
根据语篇内容，选择最佳选项。
（
A. It is a way for animals to run fast.
B. It is a common survival skill in nature.
C. It is a kind of animal food.
（
A. To make themselves look beautiful.
B. To play with other animals.
C. To match their living environment.
（
A. White.
B. Brown or gray.
C. Black.
（
A. Their orange fur with black stripes.
B. Their special shape.
C. Their quick action.
（
A. Stick insects can change their colors easily.
B. All animals have the same way to hide.
C. Camouflage is important for animals to survive.
Camouflage is a common survival skill in nature. Many animals use camouflage to hide from predators（捕食者）or catch prey（猎物）. Camouflage means that an animal's color, pattern or shape matches its living environment, making it difficult to be seen.
Some animals change their colors to match their living environment. For example, chameleons can change their colors to match the colors of the leaves, branches or rocks around them. This helps them hide from predators and catch prey. Arctic foxes also change their colors. In winter, their fur is white, which matches the snow. In summer, their fur turns brown or gray, which matches the tundra（苔原）.
Some animals have a pattern on their bodies that matches their living environment. For example, zebras have black and white stripes. These stripes make it difficult for predators to single out one zebra from a group. Tigers have orange fur with black stripes. These stripes help them hide in the grass and bushes when they hunt.
Some animals have a shape that matches their living environment. For example, stick insects look like sticks. They can stay still for a long time, making it difficult for predators to find them. Leaf insects look like leaves. Their body shapes and colors are very similar to leaves, which helps them hide from predators.
Camouflage is a clever survival skill. It shows the wisdom of nature. Animals use camouflage to survive in the wild. This is an important part of the food chain and ecological balance.
根据语篇内容，选择最佳选项。
（
B
）1. What is camouflage according to the passage?A. It is a way for animals to run fast.
B. It is a common survival skill in nature.
C. It is a kind of animal food.
（
C
）2. Why do chameleons change their colors?A. To make themselves look beautiful.
B. To play with other animals.
C. To match their living environment.
（
B
）3. What color are Arctic foxes in summer?A. White.
B. Brown or gray.
C. Black.
（
A
）4. Which of the following helps tigers hide when they hunt?A. Their orange fur with black stripes.
B. Their special shape.
C. Their quick action.
（
C
）5. What can we learn from the passage?A. Stick insects can change their colors easily.
B. All animals have the same way to hide.
C. Camouflage is important for animals to survive.
答案
1.B 2.C 3.B 4.A 5.C
