normal reef struck them as a wonder"可知,健康的珊瑚礁发出的声音使Tim Gordon感到惊讶。34.B【命题意图】考查细节理解。【答案分析】结合第三段中的"They give coral its bright appearance和第四段中的" Without their colorful companions, the coral polypsbecome transparent"可知,zooxanthellae使珊瑚礁颜色鲜艳...
Coral reefs (珊瑚礁) are among the most productive ecosystems in the world. They’re also in serious danger——climate change and other threats are killing them off. But researchers have come up with an invention they think could help the reefs: 3D-printed corals. At the heart of reef eco...
1B2020·河北高三年级名校联考)Coral reefs(珊瑚礁)are remarkably noisy ecosystems in oceans. Thespecial noises bring many fish settling there and driveenemies away. When there's a heat wave, oceantemperatures rise and the coral will lose its color, andturn white. Its residents then leave for he...
(2)C 推理判断题.根据Coral reef ecosystems are the biggest and most important ecosystems in the ocean.珊瑚礁生态系统是海洋中最大、最重要的生态系统.可知选项"珊瑚礁生态系统不是海洋中最大和最重要的生态系统"错误.故选C. 结果一 题目 Coral reefs are formed(形成) by tiny animals called polyps(珊瑚...
Coral reefs are one of the most diverse and beautiful ecosystems on Earth. They are often called the "rainforests of the sea" because of their high biodiversity. Corals are actually animals that live in colonies and build hard skeletons made of calcium carbonate. These skeletons form the structu...
A.The Importance of Diverse Ecosystems B.The Environments of Coral Reefs C.The Importance of Coral Reefs D.The Value of Biodiversity相关知识点: 试题来源: 解析 【答案】【小题1】B【小题2】D【小题3】B【小题4】C结果一 题目 Coral reefs are some of the most diverse and valuable ecosystems ...
are the biggest ecosystems in the worldC. provide food for the tiny animals and plantsD. can keep its environment balanced and healthy4. What can we learn from the passage?A. Fringing reefs make a barrier between the sea and the land.B. There are only three kinds of coral reefs in ...
Coral reefs are often called the "lungs of the sea" or marine ecosystems (生态系统). And 90 percent of the oceans are covered with coral reefs. However, overfishing and pollution have been the main threats to coral reefs in the past few years. To protect coral reefs, more people have to...
Why Are Coral Reefs so Important?When you think of important ecosystems what do you think of first? Many people would probably say rainforests or woodlands, but how many mention coral reefs? If you are a diver you have probably thought about the part they play in our ecosystem, but if ...
阅读理解 Coral reefs (珊瑚礁) are among the most productive ecosystems in the world. They're also in serious danger—climate change and other threats are killing them off. But researchers have come up with an invention they think could help the reefs: 3D-printed corals. ...