相关试卷
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1、 Some animals can （伪装）themselves to avoid predators.
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2、 Bats play an important role in （授粉）night-blooming flowers.
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3、 We need to reduce our （影响）on the natural environment.
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4、 The （栖息地）of polar bears is shrinking due to climate change.
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5、 Desert plants have special （适应能力）to survive in dry conditions.
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6、 Conservationists are working to （恢复）damaged ecosystems.
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7、 The Venus flytrap can （捕捉）insects with its leaves.
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8、 Scientists are studying these creatures to make （突破）in medicine.
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9、 Many species are facing （灭绝）due to habitat loss.
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10、 Chameleons can （改变）their skin color to match their surroundings.
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11、 The saguaro cactus can （储存）large amounts of water in its trunk.
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12、 Coral reefs are home to a （多样的）range of marine species.
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13、 Mangrove trees help （防止）soil erosion along coastlines.
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14、 The axolotl has the amazing ability to （再生）lost body parts.
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15、 A: Do you know why chameleons change color?
B: ____A、To fly better. B、To hide from predators and communicate. C、To swim faster. D、To eat more food. -
16、A: Why is the saguaro cactus important to desert animals?
B: ____A、It provides food and shelter. B、It lives in the ocean. C、It grows very quickly. D、It can fly. -
17、A: Many coral reefs are dying. What can we do to help?
B: ____A、Use more plastic products. B、Pollute the ocean. C、Reduce carbon emissions and recycle. D、Overfish in reef areas. -
18、 A: ____
B: They prevent soil erosion and provide homes for marine creatures.
A、What do you think of polar bears? B、How do mangrove trees help the environment? C、Where do saguaro cacti grow? D、Why are coral reefs colorful? -
19、 A: I saw a documentary about axolotls yesterday. They're amazing!
B: ____
A、What's special about them? B、Where do they live? C、How old are they? D、What do they eat? -
20、 阅读理解
Coral Reefs: Rainforests of the Sea
Coral reefs are among the most diverse ecosystems on Earth. Though they cover less than 1% of the ocean floor, they are home to about 25% of all marine species. These colorful structures are built by tiny organisms called coral polyps, which live in colonies.
Corals have a symbiotic relationship with algae that live in their tissues. The algae produce food using sunlight, and the corals provide shelter and nutrients. This partnership gives reefs their vibrant colors.
Reefs are important for many reasons. They protect coastlines from waves and storms, much like mangroves. They provide food and income for millions of people who fish in reef areas. Reefs also attract tourists, supporting local economies.
Unfortunately, coral reefs are in danger. Rising ocean temperatures cause coral bleaching, where corals lose their algae and turn white. Pollution, overfishing, and coastal development also damage reefs. It's estimated that half of the world's coral reefs have been lost since the 1950s.
Protecting reefs requires reducing pollution, controlling fishing, and addressing climate change. Many organizations are working to restore damaged reefs by growing coral in nurseries and transplanting it to degraded areas. Saving coral reefs means saving thousands of species that depend on them.
(1)、What percentage of the ocean floor do coral reefs cover?A、Less than 1%. B、About 25%. C、About 50%. D、Over 75%.(2)、What lives in coral tissues and helps give reefs their color?A、Fish. B、Algae. C、Humans. D、Rocks.(3)、How do reefs help people?A、They provide food and income. B、They create hurricanes. C、They produce oil. D、They make good building materials.(4)、What causes coral bleaching?A、Too many fish. B、Rising ocean temperatures. C、Too much shade. D、Cold water.(5)、What are organizations doing to restore reefs?A、Removing all fish. B、Growing coral in nurseries. C、Polluting the water. D、Building on reefs.