五、实验班原创 海洋生态 阅读还原(有两项多余)(15分)
Ocean's Gifts to Our Planet
视频学重难
The ocean covers over 70% of the earth's surface and plays a very important role in keeping our planet alive. 1. Let's explore three key ways oceans help us live and grow.
Climate Protectors
Oceans act like earth's air conditioner. 2. Through a process called the "ocean conveyor(传送者) belt", warm surface waters flow toward the poles while cold deep waters move toward the equator. This constant movement helps balance global temperatures. Without this system, many places would be too hot or too cold for life.
Life Provider
3. Over 3 billion people depend on seafood as their main protein source. Moreover, tiny ocean plants called phytoplankton(浮游植物) produce over 50% of the world's oxygen—more than all rainforests combined! Imagine taking a breath right now; every second breath comes from the ocean.
Transport Highway
Long before airplanes, oceans were our first highways. 4. Even today, about 90% of traded goods travel by sea. Shipping remains the most efficient way to move large quantities of products across continents(洲).
Call for Protection
5. Plastic pollution, overfishing and rising temperatures are damaging oceanic ecosystems. By understanding the ocean's importance, we can take better actions to protect this blue heart of our planet.

A. However, human activities now damage this balance.
B. They take in 30% of carbon dioxide and 90% of excess(额外的) heat.
C. Ancient sailors used stars to navigate these watery roads.
D. Some scientists believe there are still undiscovered species(物种).
E. Its benefits are from climate control to food supply.
F. Rivers carry important nutrients(营养) to the ocean every day.
G. The ocean serves as the world's largest pharmacy(药房) with many medicines.

五、[文章大意]本文是一篇说明文，介绍了海洋的重要性并呼吁大家保护海洋。
1.E [解析]根据“The ocean covers over 70% of the earth's surface and plays a very important role in keeping our planet alive.”可知，海洋覆盖地球大部分表面且对维持地球生命至关重要，下文“Let's explore three key ways oceans help us live and grow.”又提到海洋帮助人类生存的三种关键方式。选项E“它的益处从气候调节到食物供应”既承接上文海洋的重要性，又引出下文具体的益处介绍，符合语境。故选E。
2.B [解析]根据本段小标题“Climate Protectors”和上文“Oceans act like earth's air conditioner.”可知，本段围绕海洋作为“气候守护者”的作用而展开，需要具体说明海洋调节气候的表现。选项B“它们吸收30%的二氧化碳和90%的额外的热量”具体阐释了海洋像空调一样调节气候的原理，与前文“air conditioner”相呼应，符合语境。故选B。
3.F [解析]根据本段小标题“Life Provider”可知，本段讲述海洋作为生命供给者的作用，下文提到人类依赖海鲜获取蛋白质，浮游植物能产生大量氧气。选项F“河流每天将重要的营养物质带入海洋”解释了海洋能孕育生命、提供食物和氧气的前提条件，为后文内容做铺垫，符合语境。故选F。
4.C [解析]根据上文“Long before airplanes, oceans were our first highways.”可知，本段围绕海洋作为“运输通道”的历史展开，需要体现海洋作为早期航道的具体表现。选项C“古代水手利用星星在这些水路上航行”呼应前文“海洋是人类最早的航道”，展现了海洋在古代运输中的作用，符合语境。故选C。
5.A [解析]根据本段小标题“Call for Protection”可知，本段旨在呼吁保护海洋，下文“Plastic pollution, overfishing and rising temperatures are damaging oceanic ecosystems.”指出人类活动对海洋生态的破坏。选项A“然而，人类活动如今正破坏这种平衡”通过转折引出海洋面临的危机，衔接后文的污染问题以及呼吁人们保护海洋，符合语境。故选A。
素养考向 本文是关于海洋对地球的重要作用及呼吁保护海洋的说明文，核心考向聚焦于借助说明文了解海洋生态、气候调节、资源供给等跨学科知识，通过语言学习建立对海洋重要性的认知，同时培养学生对保护海洋的责任意识与探究意识。