/ 让学习更有效 期末备考培优 | 英语学科 / 让学习更有效 期末备考培优 | 英语学科 2025-2026学年七年级英语上册期末复习考点培优沪教版（2024） 专题12 阅读理解 学校:_____姓名：_____班级：_____考号：_____ The ocean covers about 71% of our world and is very important in keeping us alive. While the rainforests may be called “the lungs of the planet”, scientists say it’s actually the ocean that provides 50－80% of the oxygen (氧气) we breathe. It also helps control Earth’s climate by moving heat from the equator (赤道) toward the poles (地极) to cool things down. The ocean itself is very important in the fight against climate change too. It takes in 50 times more carbon dioxide (二氧化碳) than our atmosphere (大气层). But it’s not just the ocean itself—many plants and animals in the ocean hold carbon too. Perhaps one of the most wonderful ones is the seagrass. Across the world, there are more than 70 kinds of seagrass. It grows in the underwater areas of 159 countries on six continents, covering 300,000 square kilometers. Now, that may be an area the size of Italy, but it’s hardly 0.2% of the seafloor. And this is where the seagrass comes into its own because it takes in 10% of the ocean’s carbon each year, 35 times faster than rainforests. Seagrass builds its leaves and roots using carbon and holds on to it, even after death. However, such an excellent way to help with climate change is itself under threat (威胁) from climate change, as temperature rise, storms, pollution, the long-term development of coastlines, and over-fishing have all played their roles in its decline (减少). According to the U.N. Environment Programme (UNEP), a seagrass area the size of a football field is destroyed every 30 minutes. Around the world, it is declining at a rate of about 7% a year. Unless we do something, experts say that some seagrasses will disappear for ever by 2050. Dealing with this problem will take an international effort. Luckily, some efforts have already started, in different places around the world. 1．What does the underlined word “it” in paragraph 1 mean A．The oxygen B．The planet. C．The rainforest. D．The ocean 2．How can the seagrass help with climate change A．It takes in carbon dioxide and holds carbon until it dies. B．It takes in 50 times more carbon dioxide than our atmosphere C．It takes in 10% of the ocean’s carbon and holds carbon fast. D．It grows in many underwater places and covers a large area. 3．What is the purpose (目的) of the article A．To explain why the area of seagrass is becoming smaller every year. B．To draw readers’ attention to the pollution in the sea and make a change. C．To introduce different excellent ways to help with climate change. D．To tell readers the importance of seagrass and the problem it is facing. 4．What will probably be written next A．What some countries have done to stop the decline of seagrass. B．Introduce the countries where seagrass is disappearing very fast. C．Describe the results caused by ... ...
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