Unit 7 The natural world核心单词,词性转换,短语,语法,句型精练-2025-2026学年八年级英语上学期单元练习（译林版2024）

班级 姓名 学号 分数 Unit 7 The natural world 单元重点单词变形短语语法句型精练 （时间：60分钟，满分：100分） 单元知识点默写 试卷第1页，共3页 试卷第1页，共3页 学科网（北京）股份有限公司 1.include—including prep. 包括 2.hold—held (过去式) vt. 容纳；拿着；举行 3.act —action n. 行动 4.trap—trapped (过去式) vt. 吸收；使落入险境 5.harmful—harm vt. 伤害，损害 6.noisy—noise n. 噪声 7.lead—led (过去式) vi. 造成 (后果) 8.create—creative adj. 有创造力的 9.balanced—balance n. 平衡 10.solve—solution n. 解决；办法 单元知识点习题训练 1、 用括号内所给单词的适当形式填空(本大题共20小题，每小题1分，共20分) 1．I took part in kinds of activities, (include) planting crops, cooking meals and so on. 【答案】including 【详解】句意：我参加了各种各样的活动，包括种庄稼、做饭等等。此处“包括”用来补充说明活动的具体内容，需用介词形式，“include”对应的介词是“including”，故填including。 2．Try your best and you’ll pass the exam (easy). 【答案】easily 【详解】句意：尽你最大的努力，你就会轻松地通过考试。根据“you’ll pass the exam”可知，此处需用副词来修饰动词，easy是形容词，意为“容易的，不费力的”，其副词形式为easily“轻松地”。故填easily。 3．It is (like) that she will be late for a minute. 【答案】likely 【详解】句意：她很可能会迟到一分钟。like常见作动词（意为“喜欢”）或介词（意为“像”），此处需要用形容词构成固定句型“It is likely that...”（表 “很可能……”），因此要将like变为形容词形式likely。故填likely。 4．Tony is (friend) to everyone and many people like making friends with him. 【答案】friendly 【详解】句意：托尼对每个人都很友好，很多人喜欢和他交朋友。根据提示词“friend”及系动词“is”可知，此处需填形容词作表语；名词friend的形容词形式为friendly，意为“友好的”。故填friendly。 5．Our teacher is (bad) ill. We should send her to the nearest hospital at once. 【答案】badly 【详解】句意：我们的老师病得很严重，我们应该立刻送她去最近的医院。bad是形容词，需变为副词badly修饰后面的形容词ill，意为“严重地”。故填badly。 6．These woollen suits are not designed for wear in hot (climate). 【答案】climates 【详解】句意：这些羊毛套装不是为在炎热天气环境下穿而设计的。climate“气候”，此处泛指多种炎热的环境，并非特指某一单一气候，因此应用复数形式。故填climates。 7．Look at the (penguin). How lovely they are! 【答案】penguins 【详解】句意：看看这些企鹅。它们多可爱啊！根据“How lovely they are!”可知，此处应用复数名词penguins“企鹅”。故填penguins。 8．Having a (balance) diet and enough exercise is very important for us to stay healthy. 【答案】balanced 【详解】句意：保持均衡的饮食和足够的锻炼对我们保持健康非常重要。根据“diet”可知，此处需要一个形容词来修饰名词“diet”，表示“均衡的饮食”。balance“平衡”，名词，其形容词形式为balanced，意为“均衡的”。故填balanced。 9．More and more people begin to understand the most importance of (wetland). 【答案】wetlands 【详解】句意：越来越多的人开始认识到湿地的重要性。wetland“湿地”，可数名词，结合语境可知，此处应用其对应的名词复数形式表泛指。故填wetlands。 10．Our team are working together to find a to the problem, hoping to finish the project on time. (solve) 【答案】solution 【详解】句意：我们团队正在共同努力寻找解决问题的办法，希望能按时完成这个项目。solve“解决”，为动词，根据“Our team are working together to find a”可知，设空处应该填一个单数名词，solution“解决方案”符合题意，故填solution。 11．To protect the environment, we should prevent people (throw) rubbish carelessly. 【答案】throwing 【详解】句意：为了保护环境，我们应该防止人们随意扔垃圾。throw扔，动词；“prevent sb. (from) doing sth.”是固定用法，意思是“阻止某人做某事”，所以此处需要用“throw”的动名词形式“throwing”，表示阻止人们随意扔垃圾。故填throwing。 12．Please turn down the radio a little. It’s too (noise). 【答案】noisy 【详解】句意：请把收音机的声音调小一点。太吵了。根据“Please turn down the radio a little. It’s too...”及提示词可知，此处表示“太吵了”，空处应是noise的形容词形式noisy“嘈杂的，喧闹的”，作表语。故填noisy。 13．Last weekend, our class joined (environment) groups to clean up the beach. 【答案】environmental 【详解】句意：上周末，我们班参加了环保小组去清理海滩。根据“groups”可知，空格处需要用形容词修饰名词groups，environment“环境”，形容词形式为environmental，故填environmental。 14．Smoking is (harm) to health. 【答案】harmful 【详解】句意：吸烟有害健康。根据“Smoking is … to health.”可知，此处是指吸烟对健康是有害的，应用名词harm的形容词形式harmful“有害的”，在句中作表语。故填harmful。 15． is power, and continuous learning helps us to grow and succeed in life. (know) 【答案】Knowledge 【详解】句意：知识就是力量，不断学习有助于我们在生活中成长和成功。根据“is power, and continuous learning helps us to grow and succeed in life.”和常识可知，知识就是力量，空处作主语，需用名词knowledge，意为“知识”。故填Knowledge。 16．People got to know the film star through his (act) movies. 【答案】action 【详解】句意：人们通过他的动作电影认识了这位电影明星。act“动作”，是动词，修饰名词movies，用名词，action movies“动作电影”，故填action。 17．The company is trying to a young energetic image. (creation) 【答案】create 【详解】句意：这家公司正在努力创造一个年轻有活力的形象。根据句子分析可知，“is trying to努力做某事”后需跟动词原形，“creation创造”的动词形式为“create”。故填create。 18．I (lead) the blind woman to cross the road and she thanked me a lot. 【答案】led 【详解】句意：我领着那位盲人妇女过马路，她非常感谢我。根据“and she thanked me a lot.”可知，本句时态为一般过去时，所以应用lead“带领”的过去式led。故填led。 19．You have to be an , and I’m going to take lessons. (act) 【答案】 actor/actress acting 【详解】句意：你必须成为一名演员，我要上表演课。根据所给词和“You have to be an…, and I’m going to take…lessons.”可知是，成为一名演员，上表演课，分析句子可知，第一个空格处作表语，结合“an”，可知用名词单数，因为主语“you”可知，actor/actress “男演员/女演员”符合题意，第二个空格处作定语，应用现在分词acting，acting lessons“表演课”。故填actor/actress；acting。 20．He used the gun （kill）some animals for food. 【答案】to kill 【详解】句意：他用枪杀死一些动物作为食物。“kill”意为“杀死”，动词，设空处需要用动词不定式作目的状语，故填to kill。 二、根据汉语提示完成单词(本大题共10小题，每小题1分，共10分) 21．I suffer from serious (肾脏) problems because I don’t have enough water to drink. 【答案】kidney 【详解】句意：我有严重的肾脏问题，因为我没有足够的水喝。kidney“肾脏”，kidney problems“肾脏问题”。故填kidney。 22．The train is (几乎) here—let’s get ready to board. 【答案】nearly 【详解】句意：火车就要到了—— 咱们准备上车吧。nearly“几乎”，是副词。故填nearly。 23．Research has found that they flow (流) over long distances and into our oceans, damaging (生态系统) along the way. 【答案】ecosystems 【详解】句意：研究发现，它们（塑料垃圾等污染物）会流经很长的距离，最终流入我们的海洋，沿途破坏生态系统。根据汉语提示可知，ecosystem“生态系统”，是可数名词，此处没有冠词修饰，表示泛指，应用复数形式。故填ecosystems。 24．I saw so many colourful fish, amazing sea animals, and some fantastic (珊瑚). 【答案】coral 【详解】句意：我看到了好多色彩斑斓的鱼、神奇的海洋动物，还有一些绝妙的珊瑚。coral“珊瑚”，此处是“珊瑚的总称”，作不可数名词。故填coral。 25．It is reported that China is building a lighthouse in Huayang (礁) now. 【答案】Reef 【详解】句意：据报道，中国正在华阳礁建造一座灯塔。“礁”reef。根据“Huayang”可知，Huayang Reef“华阳礁”，专有名词。故填Reef。 26．These (企鹅) are kind of interesting. 【答案】penguins 【详解】句意：这些企鹅挺有趣的。penguin“企鹅”，These后接复数形式。故填penguins。 27．When planes fly low over the land, the very loud sounds can (毁坏) the house. 【答案】damage 【详解】句意：当飞机低空飞越陆地时，非常大的声音可能会毁坏房屋。根据“can”可知，横线处需填动词原形，damage“毁坏”，动词，符合题意。故填damage。 28．There was much (淤泥) in our house, so it was really difficult to clean it up. 【答案】mud 【详解】句意：我们房子里有很多淤泥，所以清理起来真的很困难。根据“There was much”可知，横线处需填名词，淤泥的英文为“mud”，为不可数名词。故填mud。 29．Please don’t (覆盖) the important information on the paper. 【答案】cover 【详解】句意：请勿覆盖纸上的重要信息。根据汉语提示可知，cover“覆盖” ，动词；此处是祈使句的否定句，don’t后用动词原形。故填cover。 30．We (储存) apples in a cool room every year. 【答案】store 【详解】句意：我们每年都会把苹果储存在凉爽的房间里。根据汉语提示“储存”对应的英文动词为store，主语We是第一人称复数，一般现在时中谓语动词用原形，故填store。   三、完成句子(本大题共10小题，每小题3分，共30分) 31．规律运动和均衡饮食能帮助摆脱疲劳，让身体保持活力。 Regular exercise and a balanced diet can help tiredness and keep your body energetic. 【答案】 get rid of 【详解】对比中英文可知，此处缺少“摆脱”，其英文表达为get rid of，can后接动词原形。故填get；rid；of。 32．在公园乱扔垃圾不仅看起来脏乱，还会对那里小动物的生存环境有害。 Littering in the park not only looks messy but also the living environment of small animals there. 【答案】 does harm to 【详解】对比中英文可知，此处缺少“对……有害”，其英文表达为do harm to，结合“looks”可知，句中时态为一般现在时，主语是动名词，动词do也应使用第三人称单数形式does。故填does；harm；to。 33．树木从空气中吸收二氧化碳并释放氧气，这有助于改善空气质量。 Trees absorb from the air and release oxygen, which helps improve air quality. 【答案】 carbon dioxide 【详解】对比中英文可知，此处缺少“二氧化碳”，其英文表达为carbon dioxide，是不可数名词。故填carbon；dioxide。 34．喝一杯温水能减缓消化速度，避免胃部不适。 Drinking a cup of warm water can the speed of digestion and avoid stomach discomfort. 【答案】 slow down 【详解】对比中英文可知，此处缺少“减缓”，其英文表达为slow down，can后接动词原形。故填slow；down。 35．系安全带能在发生车祸时阻止司机和乘客受伤。 Wearing a seatbelt can drivers and passengers in case of a car accident. 【答案】 prevent from getting hurt 【详解】prevent sb. from doing sth.“阻止某人做某事”，get hurt“受伤”。can后接动词原形。故填prevent；from；getting；hurt。 36．亚马逊雨林是成千上万种独特动植物的家园，这些物种在其他地方都找不到。 The Amazon Rainforest unique plants and animals that can’t be found anywhere else. 【答案】 is home to thousands of 【详解】be home to“是……的家园”，句子应用一般现在时，主语为The Amazon Rainforest，be动词用is；thousands of“成千上万的”，后接复数名词。故填is；home；to；thousands；of。 37．很难在红裙子和蓝裙子之间做决定——你穿这两件都很漂亮。 It’s hard to decide the red dress the blue one—they both look beautiful on you. 【答案】 between and 【详解】根据中英文对照可知，此处缺少“在……和……之间”。between…and…“在……和……之间”，介词短语。故填between；and。 38．孩子们通常从和朋友玩游戏中得到很多快乐。 Children usually a lot of happiness with their friends. 【答案】 get from playing games 【详解】get sth. from“从……中得到某物”，结合“usually”可知，句子用一般现在时，主语“Children”是复数，谓语动词用原形；play games“玩游戏”，介词“from”后接动名词。故填get；from；playing；games。 39．这部电影如此有趣，以至于我一周内看了两遍。 The movie was I watched it twice in a week. 【答案】 so interesting that 【详解】根据中英文对照可知，此处缺少“如此有趣以至于”。interesting“有趣的”，形容词；so…that…“如此……以至于……”。故填so；interesting；that。 40．我们应该为子孙后代保护地球上的环境。 We should protect the environment for future generations. 【答案】 on earth 【详解】对比中英文可知，此处缺少“地球上”，其英文表达为on earth，是介词短语。故填on；earth。 四、短文填空(本大题共20小题，每小题2分，共40分) 阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。 There was once a man in South America who had a parrot, a pet bird that could imitate (模仿) human words. 41 parrot was unique. He could learn to say any word except one. He could not say the name of 42 (he) native town, Catano. The man did everything he could 43 (teach) the parrot to say “Catano”, but he never succeeded. At first, he was very gentle, but gradually he 44 (lose) his temper. “You are a stupid (愚蠢的) bird! Why can’t you learn to say that word? Say ‘Catano’, or I’ll kill you!” But the parrot would not say it. Many times the man screamed, “Say ‘Catano’, or I will kill you!” 45 the bird would never repeat the name. 46 (final), the man gave up. He threw the parrot into the chicken house. “You are even stupider than the chickens!” In the chicken house, there were four old chickens 47 (wait) to be killed for Sunday’s dinner. The next morning, when he went out to the chicken house, the man opened the door. He was 48 (surprise) by what he saw. He could not believe his eyes and ears. On the floor lay three 49 (die) chickens, and the parrot was screaming 50 the fourth one, “Say ‘Catano’, or I’ll kill you!” 【答案】 41．The 42．his 43．to teach 44．lost 45．But 46．Finally 47．waiting 48．surprised 49．dead 50．at 【导语】本文讲述了南美洲一个人养了一只会模仿人类语言的鹦鹉，这只鹦鹉唯独不会说自己家乡“Catano”这个名字，主人尝试各种方法教它都失败，最后将其扔进鸡舍，结果鹦鹉却学着主人的语气威胁鸡的故事。 41．句意：这只鹦鹉很特别。此处特指上文提到的那只鹦鹉，用定冠词“The”，句首单词首字母大写。故填The。 42．句意：它不会说自己家乡Catano的名字。修饰名词“native town”要用形容词性物主代词，“he”的形容词性物主代词是“his”。故填his。 43．句意：这个人尽其所能教鹦鹉说“Catano”，但从未成功。“did everything he could”后接不定式表目的。故填to teach。 44．句意：起初，他很温和，但渐渐地他发脾气了。文章叙述的是过去的事情，用一般过去时，“lose”的过去式是“lost”。故填lost。 45．句意：但这只鸟永远不会重复这个名字。前文主人多次威胁鹦鹉，后文鹦鹉仍不重复名字，是转折关系，用连词“But”，句首单词首字母大写。故填But。 46．句意：最后，这个人放弃了。修饰整个句子要用副词，“final”的副词形式是“Finally”，句首单词首字母大写。故填Finally。 47．句意：在鸡舍里，有四只老母鸡等着被宰来做周日的晚餐。“chickens”和“wait”之间是主动关系，用现在分词作后置定语，“wait”的现在分词是“waiting”。故填waiting。 48．句意：他对所看到的感到惊讶。“be surprised by”是固定短语，意为“对……感到惊讶”。故填surprised。 49．句意：地上躺着三只死鸡，鹦鹉正在对第四只尖叫：“说‘Catano’，否则我就杀了你！”此处修饰名词“chickens”要用形容词，“die”的形容词形式是“dead”，意为“死的”。故填dead。 50．句意：地上躺着三只死鸡，鹦鹉正在对第四只尖叫：“说‘Catano’，否则我就杀了你！”“scream at”是固定短语，意为“对……尖叫”。故填at。 The environment is everything around us in the natural world. It is the earth, the air, rivers, lakes, f 51 and seas. These are what human beings depend on for a living. All n 52 waste is recycled. Animal waste and dead bodies are broken down by small creatures (生物), like those worms in the soil. This is their f 53 . The carbon dioxide that people and animals breathe out is used by plants to breathe and help them g 54 . Plants give out oxygen which people and animals need to breathe in. Plants take in w 55 through their roots. They pass it out through their leaves as moisture (水分). This moisture, together with water vapour coming f 56 rivers and seas, rises and turns into water droplets and forms clouds. Larger water droplets then f 57 down in the form of rain. In this way, the water goes b 58 to the earth, rivers and seas to be used again. However, humans have made a lot of changes to the earth. The technology and industry have made life e 59 , but they also produce a lot of new waste. Nature finds this new waste hard or i 60 to recycle. Man shall deal with this problem before it is too late. 【答案】 51．(f)orests 52．(n)atural 53．(f)ood 54．(g)row 55．(w)ater 56．(f)rom 57．(f)all 58．(b)ack 59．(e)asier 60．(i)mpossible 【导语】本文讲述了自然循环维系生态，人类活动破坏平衡，亟待治理污染。 51．句意：它是地球、空气、河流、湖泊、森林和海洋。根据“the earth, the air, rivers, lakes,”和所给的首字母提示可知，此处指森林，forest意为“森林”，此处用复数。故填(f)orests。 52．句意：所有自然的废物都被回收利用。根据“waste is recycled.”和所给的首字母提示可知，此处指所有自然的废物都被回收利用，natural意为“自然的”，形容词作定语。故填(n)atural。 53．句意：这是它们的食物。根据“Animal waste and dead bodies are broken down by small creatures (生物), like those worms in the soil.”和所给的首字母提示可知，此处指它们的食物，food意为“食物”，不可数名词。故填(f)ood。 54．句意：人和动物呼出的二氧化碳被植物用来呼吸和帮助它们生长。根据“help them”和所给的首字母提示可知，此处指帮助它们生长，grow意为“生长”，help sb. do sth.帮助某人做某事，需用动词原形。故填(g)row。 55．句意：植物通过根部吸收水分。根据“through their roots.”和所给的首字母提示可知，此处指植物通过根部吸收水分，water意为“水分”，不可数名词。故填(w)ater。 56．句意：这些水分与来自河流和海洋的水蒸气一起上升，变成水滴，形成云。根据“rivers and seas, rises and turns into water droplets and forms clouds.”和所给的首字母提示可知，此处指与来自河流和海洋的水蒸气一起上升，come from意为“来自于”。故填(f)rom。 57．句意：较大的水滴随后以雨的形式落下。根据“down in the form of rain.”和所给的首字母提示可知，此处指较大的水滴随后以雨的形式落下，fall down意为“落下”，此处是一般现在时，主语 Larger water droplets 是复数，因此谓语用原形。故填(f)all。 58．句意：通过这种方式，水回到地球、河流和海洋中再次被利用。根据“to the earth, rivers and seas to be used again.”和所给的首字母提示可知，此处指水回到地球、河流和海洋中再次被利用，go back意为“回到”。故填(b)ack。 59．句意：技术和工业使生活变得更加便利，但也产生了许多新的废物。根据“The technology and industry have made life”和所给的首字母提示可知，此处指技术和工业使生活变得更加便利，easy意为“容易的”，此处用比较级。故填(e)asier。 60．句意：大自然发现这种新的废物很难或不可能回收。根据“this new waste hard or…to recycle.”和所给的首字母提示可知，此处指大自然发现这种新的废物很难或不可能回收，impossible意为“不可能的”，形容词。故填(i)mpossible。 试卷第1页，共3页 学科网（北京）股份有限公司 $ 班级 姓名 学号 分数 Unit 7 The natural world 单元重点单词变形短语语法句型精练 （时间：60分钟，满分：100分） 单元知识点默写 试卷第1页，共3页 试卷第1页，共3页 学科网（北京）股份有限公司 1.include—_________ prep. 包括 2.hold—_________(过去式)vt. 容纳；拿着；举行 3.act—_________ n. 行动 4.trap—_________ (过去式)vt. 吸收；使落入险境 5.harmful —_________ vt. 伤害，损害 6.noisy—_________ n. 噪声 7.lead—_________ (过去式)vi. 造成 (后果) 8.create—_________ adj. 有创造力的 9.balanced—_________ n. 平衡 10.solve—_________ n. 解决；办法 单元知识点习题训练 1、 用括号内所给单词的适当形式填空(本大题共20小题，每小题1分，共20分) 1．I took part in kinds of activities, (include) planting crops, cooking meals and so on. 2．Try your best and you’ll pass the exam (easy). 3．It is (like) that she will be late for a minute. 4．Tony is (friend) to everyone and many people like making friends with him. 5．Our teacher is (bad) ill. We should send her to the nearest hospital at once. 6．These woollen suits are not designed for wear in hot (climate). 7．Look at the (penguin). How lovely they are! 8．Having a (balance) diet and enough exercise is very important for us to stay healthy. 9．More and more people begin to understand the most importance of (wetland). 10．Our team are working together to find a to the problem, hoping to finish the project on time. (solve) 11．To protect the environment, we should prevent people (throw) rubbish carelessly. 12．Please turn down the radio a little. It’s too (noise). 13．Last weekend, our class joined (environment) groups to clean up the beach. 14．Smoking is (harm) to health. 15． is power, and continuous learning helps us to grow and succeed in life. (know) 16．People got to know the film star through his (act) movies. 17．The company is trying to a young energetic image. (creation) 18．I (lead) the blind woman to cross the road and she thanked me a lot. 19．You have to be an , and I’m going to take lessons. (act) 20．He used the gun （kill）some animals for food. 二、根据汉语提示完成单词(本大题共10小题，每小题1分，共10分) 21．I suffer from serious (肾脏) problems because I don’t have enough water to drink. 22．The train is (几乎) here—let’s get ready to board. 23．Research has found that they flow (流) over long distances and into our oceans, damaging (生态系统) along the way. 24．I saw so many colourful fish, amazing sea animals, and some fantastic (珊瑚). 25．It is reported that China is building a lighthouse in Huayang (礁) now. 26．These (企鹅) are kind of interesting. 27．When planes fly low over the land, the very loud sounds can (毁坏) the house. 28．There was much (淤泥) in our house, so it was really difficult to clean it up. 29．Please don’t (覆盖) the important information on the paper. 30．We (储存) apples in a cool room every year. 三、完成句子(本大题共10小题，每小题3分，共30分) 31．规律运动和均衡饮食能帮助摆脱疲劳，让身体保持活力。 Regular exercise and a balanced diet can help tiredness and keep your body energetic. 32．在公园乱扔垃圾不仅看起来脏乱，还会对那里小动物的生存环境有害。 Littering in the park not only looks messy but also the living environment of small animals there. 33．树木从空气中吸收二氧化碳并释放氧气，这有助于改善空气质量。 Trees absorb from the air and release oxygen, which helps improve air quality. 34．喝一杯温水能减缓消化速度，避免胃部不适。 Drinking a cup of warm water can the speed of digestion and avoid stomach discomfort. 35．系安全带能在发生车祸时阻止司机和乘客受伤。 Wearing a seatbelt can drivers and passengers in case of a car accident. 36．亚马逊雨林是成千上万种独特动植物的家园，这些物种在其他地方都找不到。 The Amazon Rainforest unique plants and animals that can’t be found anywhere else. 37．很难在红裙子和蓝裙子之间做决定——你穿这两件都很漂亮。 It’s hard to decide the red dress the blue one—they both look beautiful on you. 38．孩子们通常从和朋友玩游戏中得到很多快乐。 Children usually a lot of happiness with their friends. 39．这部电影如此有趣，以至于我一周内看了两遍。 The movie was I watched it twice in a week. 40．我们应该为子孙后代保护地球上的环境。 We should protect the environment for future generations. 四、短文填空(本大题共20小题，每小题2分，共40分) 阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。 There was once a man in South America who had a parrot, a pet bird that could imitate (模仿) human words. 41 parrot was unique. He could learn to say any word except one. He could not say the name of 42 (he) native town, Catano. The man did everything he could 43 (teach) the parrot to say “Catano”, but he never succeeded. At first, he was very gentle, but gradually he 44 (lose) his temper. “You are a stupid (愚蠢的) bird! Why can’t you learn to say that word? Say ‘Catano’, or I’ll kill you!” But the parrot would not say it. Many times the man screamed, “Say ‘Catano’, or I will kill you!” 45 the bird would never repeat the name. 46 (final), the man gave up. He threw the parrot into the chicken house. “You are even stupider than the chickens!” In the chicken house, there were four old chickens 47 (wait) to be killed for Sunday’s dinner. The next morning, when he went out to the chicken house, the man opened the door. He was 48 (surprise) by what he saw. He could not believe his eyes and ears. On the floor lay three 49 (die) chickens, and the parrot was screaming 50 the fourth one, “Say ‘Catano’, or I’ll kill you!” The environment is everything around us in the natural world. It is the earth, the air, rivers, lakes, f 51 and seas. These are what human beings depend on for a living. All n 52 waste is recycled. Animal waste and dead bodies are broken down by small creatures (生物), like those worms in the soil. This is their f 53 . The carbon dioxide that people and animals breathe out is used by plants to breathe and help them g 54 . Plants give out oxygen which people and animals need to breathe in. Plants take in w 55 through their roots. They pass it out through their leaves as moisture (水分). This moisture, together with water vapour coming f 56 rivers and seas, rises and turns into water droplets and forms clouds. Larger water droplets then f 57 down in the form of rain. In this way, the water goes b 58 to the earth, rivers and seas to be used again. However, humans have made a lot of changes to the earth. The technology and industry have made life e 59 , but they also produce a lot of new waste. Nature finds this new waste hard or i 60 to recycle. Man shall deal with this problem before it is too late. 试卷第1页，共3页 学科网（北京）股份有限公司 $