《2025年学霸甘肃少年儿童出版社八年级英语下册人教版》

Ⅵ. 阅读理解
（2024·广东深圳·八下期末）Scientists have discovered the world’s largest known field of sea grass. They did it using videos shot by some unusual helpers：tiger sharks. The work should help protect the sea grass，and it also shows a powerful way to explore the ocean.
Sea grasses are flowering plants that normally grow in shallow waters near coasts. They grow in thick fields，known as meadows（草甸）. Sea grass meadows not only help clean the ocean’s water and provide food and shelter for many sea creatures but also help fight against the climate crisis.
Sea grass meadows store huge amounts of carbon—the harmful pollution that’s making global warming worse. Damaging them can release this pollution again，so it’s important to protect them.
However，scientists don’t know the exact size and number of the world’s sea grass meadows. The meadows can be hard to spot，because the water is either too deep or not clear enough. And the ocean is so huge that it’s simply not possible to study it all by diving. So a team of scientists decided to have sharks help with the research. Tiger sharks are fast swimmers that live underwater. They also spend a lot of time in sea grass meadows.
Between 2016 and 2020，a team of researchers attached（系上）cameras and other trackers to the fins（鱼鳍）of seven tiger sharks. After catching the sharks，the scientists worked quickly to attach the equipment，and then let them go again. The cameras were designed to fall off after a few hours and float to the surface. Tracking signals helped the scientists find the cameras and collect the videos. The scientists were left with hours of videos taken as the sharks traveled for miles over the sea floor.
1. Who helped scientists discover the world’s largest known field of sea grass?
A. Tigers. B. Explorers.
C. Photographers. D. Sharks.
2. Which of the following is the reason for protecting sea grass meadows?
A. Meadows grow in shallow waters.
B. A lot of carbon is stored in meadows.
C. All sea creatures need meadows for food.
D. Meadows clean thick fields under the water.
3. Which of the following words can replace the underlined word “spot” in Paragraph 4?
A. Notice. B. Protect.
C. Grow. D. Catch.
4. What’s the main idea of Paragraph 5?
A. How the tiger sharks found the cameras.
B. How the researchers attached the equipment.
C. How the tiger sharks helped with the research.
D. How the researchers traveled over the sea floor.
5. What is the best title for this passage?
A. Sharks Play a Role in Protecting Sea Grass
B. Sharks Help Discover Sea Grass Meadows
C. Scientists Find a Way to Explore the Ocean
D. Scientists Use Sea Grass to Protect the Ocean

答案： D@@B@@A@@C@@B