All of the above 相关知识点: 试题来源: 解析 D。解析:选项A“Ocean acidification”(海洋酸化),海洋酸化会破坏珊瑚礁的生长环境。选项B“Over - fishing”(过度捕鱼),过度捕鱼会破坏珊瑚礁生态系统的平衡。选项C“Coastal development”(海岸开发),海岸开发可能会破坏珊瑚礁周围的环境。这三个因素都是珊瑚礁...
结果1 题目 ( D ) 4. What is the main threat (威胁) to coral reefs? A. Overfishing. B. Bad weather. C. Too many sea animals. D. Pollution and rising ocean temperatures. 相关知识点: 试题来源: 解析 答案见上 反馈 收藏
A. By changing the color of the coral reefs. B. By making loud noises. C. By having a bright color to blend in with corals. D. By living alone. 相关知识点: 试题来源: 解析 C。解析:原文提到“Some are brightly colored, which helps them blend in with the colorful corals for protecti...
A. Volcanic activity B. Coral polyps building calcium carbonate structures C. Earthquakes D. Hurricanes 相关知识点: 试题来源: 解析 B。解析:珊瑚礁是由珊瑚虫建造碳酸钙结构形成的。选项 A 火山活动不是珊瑚礁形成的主要因素。选项 C 地震与珊瑚礁形成无关。选项 D 飓风也与珊瑚礁形成无关。反馈...
What is the first paragraph mainly about? A. The importance of coral reefs. B. The influence of climate change. C. The perfect place for sea species. D. The E. cosystem's diversity and complexity. 相关知识点: 试题来源: 解析 A 解析:段落大意题。根据第一段内容可知,珊瑚礁是海洋生物的...
题目What are coral reefs? A. Just beautiful things. B. Only important for coastlines. C. Beautiful and extremely important. D. Useless for the planet. 相关知识点: 试题来源: 解析 C。解析:文章中提到珊瑚礁不仅美丽而且极其重要,它们为无数物种提供栖息地并保护海岸线免受侵蚀。
What are coral reefs? A. Home to only a few species of fish. B. Ugly and not diverse. C. One of the most beautiful and diverse parts of the marine ecosystem. D. Not important for the E. cosystem. 相关知识点: 试题来源: 解析 C。解析:“Coral reefs are one of the most beautiful...
What do coral reefs provide homes for? A. Birds and mammals B. Insects and spiders C. Marine life D. Reptiles and amphibians 相关知识点: 试题来源: 解析 C。解析:文中提到“They provide homes for a wide variety of marine life”,即珊瑚礁为各种各样的海洋生物提供家园。
Coral reefs are home to many different species. What is the main material that coral polyps secrete to build coral reefs? A. Sand B. Shells C. Calcium carbonate D. Mud 相关知识点: 试题来源: 解析 C。解析:珊瑚虫分泌碳酸钙来建造珊瑚礁,选项 C 正确;不是沙子、贝壳和泥土,选项 A、B、D...
阅读理解D关键词:coral reefs语篇类型:说明文词数:320 难度:★★★☆☆建议用时:9分钟 正确率::/412. What can be learned about coral reefs?They may be small, but they build big things! Corals(珊瑚 A. They turn calcium into stones.虫), which live in the warm parts of the Earth's oceans...