/ 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学年八年级英语上册期末复习考点培优沪教版 （五四学制）（2024）专题12 阅读理解 学校:_____姓名：_____班级：_____考号：_____ The ocean is home to millions of living things. However, it is facing many problems today. One of the biggest problems is plastic pollution. Every year, a lot of plastic waste enters the ocean, harming sea animals and plants. To solve this problem, many countries and organizations are taking action. For example, some countries have banned single-use plastics like plastic bags and straws. Others are developing biodegradable (可生物降解的) plastics that can break down in the environment. Another problem is overfishing. Some fishermen catch too many fish, which makes it hard for fish populations to grow back. This not only affects the ocean ecosystem but also the people who depend on fishing for their living. To deal with overfishing, many areas have set fishing limits and created marine protected areas where fishing is not allowed. Climate change is also a serious threat to the ocean. The ocean absorbs a lot of carbon dioxide from the air, which makes the water more acidic (酸性的). This harms coral reefs (珊瑚礁) and other marine life. Rising sea temperatures are also causing problems for many sea animals, like polar bears and penguins. Protecting the ocean is important for all of us. We can do our part by reducing plastic use, supporting sustainable fishing and learning more about ocean conservation. Only by working together can we keep the ocean healthy for future generations. 1．What is one of the biggest problems the ocean is facing A．Air pollution. B．Plastic pollution. C．Noise pollution. D．Soil pollution. 2．What have some countries done to reduce plastic pollution A．Banned all plastics. B．Banned single-use plastics. C．Stopped producing plastics. D．Burned plastic waste. 3．How does overfishing affect people A．It makes fish more expensive. B．It affects people who depend on fishing. C．It makes seafood more delicious. D．It increases the number of fish. 4．What can we do to protect the ocean A．Use more plastic products. B．Support overfishing. C．Reduce plastic use. D．Ignore climate change. Everyone knows magic tricks are fun, but not enough people realize that math can be as well. Here is one of the most popular tricks to show you how amazing math can be. Firstly, pick a friend with good math skills. To play the trick, your friend needs to know how to add numbers and do subtraction (减法). Then, write down 1089 on a piece of paper without showing anyone. Thirdly, ask your friend to write down a number with three different digits (数位). Tell him not to show you the number. Make sure the three digits cannot be the same. For example, he could pick 481. Next, let your friend write down the number backwards. For example, 481 backwards is 184. After that, make it into a subtraction problem. Now your friend has two numbers. Get him t ... ...
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