Unit7-The secret of memory- Section 2-同步练2025-2026学年沪教版英语八年级上册

**基本信息** 本同步练通过基础-巩固-提升三层设计，实现从词汇、句型到语篇的渐进式知识巩固，适配新授课语言能力培养与思维品质提升需求。 **分层设计** |层次|知识覆盖|设计特色| |----|----------|----------| |基础层|核心词汇（如unless, mix）及基础句型（if/unless条件句）|通过选词填空（10题）和适当形式填空（10题）强化语法规则应用，对应语言能力培养| |巩固层|语篇理解与语法综合运用|阅读理解A（4题）聚焦习惯养成主题，完形填空（10题）结合自然现象情境，提升信息提取与逻辑推理能力，体现思维品质| |提升层|篇章结构与语言规则迁移|五选四（4题）系统梳理if/unless用法，培养语篇组织与学习策略，发展学习能力|

Unit 7 The secret of memory Section 2 同步练 班级：________ 姓名：________ 得分：________ 一、选词填空（共 10 小题，每小题 1 分，共 10 分） 从方框中选择合适的词，并用其正确形式填空。 unless, if, when, mix, disappear, float, die, dark, break, certainly 1. You will miss the early bus ________ you hurry up. 2. ________ you heat water to 100℃, it will boil. 3. If you ________ blue and red, you get purple. 4. When you put salt into water, it ________ quickly. 5. If you switch off the lamp, the room becomes ________. 6. If you drop a glass on the floor, it will ________. 7. If you take a fish out of water, it will ________ soon. 8. If you put wood into water, it will ________. 9. You will ________ fail the exam if you don’t study hard. 10. ________ the weather is fine, we will have a picnic this weekend. 二、适当形式填空（共 10 小题，每小题 1 分，共 10 分） 根据句子意思，用括号中所给单词的适当形式填空。 1. If you ________ (mix) red and yellow, you get orange. 2. The fish ________ (die) if you leave it out of water for too long. 3. If you ________ (not study) hard, you won’t pass the exam. 4. Unless you ________ (hurry), you will be late for school. 5. When you ________ (put) ice into hot water, it melts. 6. The room ________ (become) dark if you turn off the light. 7. Wood ________ (float) if you put it into water. 8. If you ________ (drop) a glass, it will break easily. 9. Unless you ________ (take) enough exercise, you will not stay healthy. 10. If you ________ (not water) the plant, it will die soon. 三、阅读理解 A（共 4 小题，每小题 2.5 分，共 10 分） 阅读短文，从每题所给的 A、B、C、D 四个选项中，选出最佳选项。 If you want to do well in school, you need to build good habits. These habits will help you study better and remember more things. First, if you listen carefully in class, you will understand the lessons better. Unless you pay attention, you will miss important information. Taking notes is also helpful. If you write down key points, you will remember them more easily. Second, you need to review what you learn every day. If you review your lessons after class, you will keep the information in your long-term memory. Unless you review regularly, you will forget what you learned quickly. Third, get enough sleep. If you don’t sleep well, your brain will not work at its best. You will feel tired and it will be hard to remember things. Unless you get at least 8 hours of sleep every night, you will not perform well in class or exams. Finally, don’t be afraid to ask questions. If you don’t understand something, ask your teacher or classmates. Unless you ask for help, you will stay confused and fall behind. Good habits take time to build, but if you keep working on them, you will see great changes in your studies soon! 1. What will happen if you don’t listen carefully in class? A. You will understand the lessons better B. You will miss important information C. You will remember key points easily D. You will do well in the exams 2. The underlined word “confused” in the passage means “______” in Chinese. A. 困惑的 B. 开心的 C. 紧张的 D. 放松的 3. Which of the following is NOT a good study habit according to the passage? A. Taking notes in class B. Reviewing lessons every day C. Getting 6 hours of sleep a night D. Asking questions when you don’t understand 4. What is the main idea of the passage? A. How to get good sleep every night B. Why students forget things easily C. Good habits to help you study better D. The importance of asking teachers for help 四、完形填空（共 10 小题，每小题 1 分，共 10 分） 阅读短文，掌握其大意，然后从各题所给的 A、B、C、D 四个选项中，选出最佳选项。 Do you know how everyday things work? Many simple rules control what happens in the world around us. Let’s look at some examples. If you 1______ salt into water, it will disappear. This happens because salt dissolves in water. If you mix red and blue paint, you 2______ purple. It’s a simple colour rule. What if you put a piece of wood into water? It will 3______, but a stone will sink. These are all natural rules that always work. We can also use these rules to make predictions. If the sun rises in the east, the day will start. If it rains heavily, the ground will get 4______. Unless you study hard, you won’t do well in exams. Unless you water plants, they will 5______. These rules are important in science, but they also help us in daily life. If you understand them, you can 6______ what will happen next. For example, if you drop a glass on the floor, you know it will break. If you leave food out in the sun, it will go bad. Unless you keep it in the fridge, it won’t stay 7______. Understanding these rules helps us make better choices. If you know that too much screen time will make your eyes 8______, you will take breaks. If you know that regular exercise keeps you healthy, you will 9______ it a habit. Unless you use these rules, you might make mistakes that could be avoided. In short, the world works in predictable ways. If you learn these simple rules, you will be better prepared for life. 10______ you pay attention to what happens around you, you will discover more and more of these rules. They are everywhere, waiting for you to notice them. 1. A. put B. take C. mix D. break 2. A. get B. got C. will get D. would get 3. A. sink B. float C. disappear D. die 4. A. dark B. wet C. dry D. cold 5. A. grow B. live C. die D. change 6. A. forget B. predict C. change D. control 7. A. fresh B. warm C. clean D. cool 8. A. tired B. happy C. strong D. sharp 9. A. make B. take C. keep D. let 10. A. Unless B. If C. But D. Or 五、五选四（共 4 小题，每小题 2.5 分，共 10 分） 根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有一项为多余选项。 How to Use “If” and “Unless” in English “If” and “unless” are common words in English, and they are very useful for talking about rules and conditions. 1_______ First, use “if” for general rules. When you talk about something that always happens when a condition is met, use “if + simple present, simple present”. For example: If you heat ice, it melts. 2 _______This kind of sentence tells us a fact that never changes. Second, use “unless” to mean “if…not”. You can replace “if…not” with “unless” in most sentences. For example: If you don’t hurry, you will be late = Unless you hurry, you will be late. 3_______ Third, remember the order of clauses. You can put the “if/unless” clause at the beginning or the end of the sentence. If it comes at the beginning, use a comma after it. If it comes at the end, you don’t need a comma. For example: If you mix blue and yellow, you get green. / You get green if you mix blue and yellow. 4_______ Practice using these words in your daily sentences, and you will soon get used to them! A. It’s important to know how to use them correctly. B. Unless you mix blue and yellow, you won’t get green. C. This is the most common way to use “if” for facts. D. This makes your sentences shorter and clearer. E. So both “if” and “unless” clauses can come at the end. 参考答案 一、选词填空 1. unless 2. If 3. mix 4. disappears 5. dark 6. break 7. die 8. float 9. certainly 10. If / When 二、适当形式填空 1. mix 2. will die 3. don’t study 4. hurry 5. put 6. will become 7. floats 8. drop 9. take 10. don’t water 三、阅读理解 A 1. B 2. A 3. C 4. C 四、完形填空 1. A 2. A 3. B 4. B 5. C 6.B 7. A 8. A 9. A 10. B 五、五选四 1. A 2. C 3. D 4. E 学科网（北京）股份有限公司 $