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/ 让学习更有效 单元培优卷 | 英语学科
/ 让学习更有效 单元培优卷 | 英语学科
2026 - 2027学年九年级英语上册单元全真模拟培优卷仁爱科普版（新教材）
Unit 3 A Green Earth, a Better Home
注意事项：
1．本试卷共七大题，满分120分（不含听力口语30分），考试用时100分钟；
2．答题前，考生务必将自己的姓名、考点名称、考场号、座位号用0.5毫米黑色墨水签字笔填写在相对应的位置上，并认真核对条形码上的准考号、姓名是否与本人的相符合；
3．答选择题必须用2B铅笔把对应题目的答案标号涂黑，如需改动，请用橡皮擦干净后，再选涂其他答案；答非选择题必须用0.5毫米黑色墨水签字笔写在指定的位置上，不在答题区域内的答案一律无效，不得用其他笔答题。
第一部分 完形填空（共10小题；每小题1分，满分10分）
阅读下面的短文，从每题所给的A、B、C、D四个选项中选出最佳选项
Waste sorting is very important for environmental protection. To sort the wastes, we 1 them into bins of different colors. The blue bin is 2 for recycling paper and plastics, the green one is 3 kitchen waste, the red one is for harmful or dangerous waste and the gray one is for others. 4 the waste is not easy. So, besides colors, there are 5 signs and texts on each bin to help people sort waste correctly. Communities often hold different activities to teach people 6 to sort the waste, 7 sometimes you can see volunteers help people put the waste 8 the right bin. By sorting waste 9 , we can reduce pollution and save resources. Everyone should 10 their part in protecting the environment.
1．A．put B．take C．bring D．get
2．A．made B．used C．found D．seen
3．A．with B．for C．from D．of
4．A．Sort B．Sorts C．Sorting D．Sorted
5．A．also B．too C．either D．neither
6．A．what B．when C．where D．how
7．A．but B．and C．or D．so
8．A．in B．on C．at D．into
9．A．correct B．correctly C．more correct D．most correct
10．A．do B．make C．take D．have
第二部分 阅读理解（共20小题；每小题2分，满分40分）
请认真阅读下面短文，从短文后各题所给的A、B、C、D四个选项中，选出最佳选项。
A
The Causes and Effects of Water Pollution
Water pollution is one of the most serious environmental problems in the world today. It affects not only the health of humans but also the survival of plants and animals. Understanding the causes and effects of water pollution is the first step toward solving this problem.
There are many causes of water pollution. One of the main causes is industrial waste. Factories often release chemicals and heavy metals into rivers and lakes without proper treatment. These substances can be very harmful to living organisms. Another major cause is agricultural runoff. Farmers use fertilizers and pesticides to increase crop production. When it rains, these chemicals are washed into nearby water bodies, causing pollution. Household waste is also a significant contributor. Many people throw garbage and plastic into rivers, which not only pollutes the water but also harms aquatic life.
The effects of water pollution are severe and far-reaching. Polluted water can cause many diseases in humans, such as cholera and typhoid. It also kills fish and other aquatic animals, disrupting the food chain. Moreover, water pollution makes water unfit for drinking, bathing, and farming. This can lead to water shortages and food scarcity in many regions.
In conclusion, water pollution is a global problem that requires immediate attention. Everyone can play a part in reducing water pollution by adopting greener habits in their daily lives.
11．What is the main topic of this passage
A．The importance of clean water. B．The causes and effects of water pollution.
C．The history of water pollution. D．How to treat industrial waste.
12．What is one major cause of water pollution mentioned in the passage
A．Natural disasters. B．Industrial waste.
C．Overfishing. D．Climate change.
13．How do agricultural activities cause water pollution
A．Through the use of fertilizers and pesticides. B．Through the release of greenhouse gases.
C．Through the destruction of forests. D．Through the overuse of water.
14．What is one effect of water pollution on humans
A．It can cause many diseases. B．It improves the taste of water.
C．It makes water cleaner. D．It increases fish population.
15．What does the author suggest at the end of the passage
A．We should ignore water pollution. B．Everyone should adopt greener habits.
C．Only factories should reduce pollution. D．Water pollution is not a serious problem.
B
The Three Rs
Reduce, reuse and recycle are the three Rs. They are important rules for environmental protection. Reduce means trying to produce less trash. For example, we can use fewer plastic bags and buy products with less packaging. Reuse means using things again or in another way. We can use the water from showers to clean the toilet and donate old clothes to charity. Recycle means turning used materials into new products. We can recycle paper, glass, metal and plastic. By following these three Rs, we can reduce pollution and protect our planet. It is not difficult to follow these rules in our daily lives.
16．What does “reduce” mean
A．To use things again. B．To produce less trash.
C．To turn waste into new products. D．To throw things away.
17．Which of the following is an example of reusing
A．Using fewer plastic bags. B．Donating old clothes to charity.
C．Recycling paper boxes. D．Buying products with less packaging.
18．What can we recycle
A．Only paper. B．Only glass. C．Paper, glass, metal and plastic. D．Only metal.
19．Why are the three Rs important
A．They help us save money. B．They help us reduce pollution and protect the planet.
C．They help us save time. D．They help us make more trash.
20．What is the main idea of the passage
A．The three Rs are difficult to follow.
B．The three Rs are important for environmental protection.
C．We should only recycle.
D．We should never throw anything away.
C
Plastic Pollution
Plastic pollution is one of the biggest environmental problems today. Many people use plastic bags to carry their things and then throw them away. These bags end up in rivers and oceans, harming wildlife.
Perhaps we should rethink this and find a better way to use them. One way is to reuse them. After we bring our things home in a plastic bag, we can save it and use it again for something else. This is a great way to reduce the number of new plastic bags.
By reusing plastic bags, we can cut down pollution and recreate a greener world. Many communities have renewed calls for reducing plastic use. Everyone can play a part in protecting the environment.
21．What is one of the biggest environmental problems today
A．Air pollution. B．Plastic pollution. C．Noise pollution. D．Water pollution.
22．Where do plastic bags often end up
A．In recycling centers. B．In rivers and oceans. C．In factories. D．In shops.
23．What is a good way to deal with plastic bags
A．Throw them away. B．Burn them. C．Reuse them. D．Bury them.
24．What can we do by reusing plastic bags
A．Increase pollution. B．Cut down pollution and recreate a greener world.
C．Make more plastic bags. D．Harm wildlife.
25．What have many communities done
A．They have stopped using plastic bags. B．They have renewed calls for reducing plastic use.
C．They have made more plastic bags. D．They have thrown plastic bags away.
D
Earth — Our Only Home
Earth is our only home, but we are not taking good care of it. Many factories are polluting the air and water, and many farmers are polluting the soil when they use harmful things to kill the insects. Other pollutions are also becoming more and more serious. Earth is crying for help!
What can we do to save our home Earth Most importantly, we should do everything possible to prevent pollution. For example, factories should use modern technology to stop producing pollution, or the government should punish them. We should then try our best to reduce pollution. As we all know, small acts can make a big difference, and we can make it happen if we act as one. Also, don’t forget to plant more trees, because trees are the lungs of Earth and can help clean the air. There is always more to do, and we also need to make greater efforts to save Earth. After all, we have only one home planet in the universe.
26．Why is Earth crying for help
A．Because it is too old. B．Because it is being polluted in many ways.
C．Because it has no water. D．Because people have left it.
27．What should factories do to prevent pollution according to the passage
A．They should stop production. B．They should use modern technology.
C．They should move to other places. D．They should pay more taxes.
28．What does the author say about small acts
A．They are not important. B．They can make a big difference.
C．They are a waste of time. D．They are only for children.
29．Why are trees important according to the passage
A．They provide food for people.
B．They are the lungs of Earth and can clean the air.
C．They are beautiful.
D．They provide wood for building.
30．What is the main idea of the passage
A．Earth is very old. B．We should protect our environment.
C．Factories are harmful. D．Trees are important.
第三部分 信息还原（共5小题；每小题1分，满分5分）
请认真阅读下面短文，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
Nowadays, the food that you buy comes from many different countries. Have a look in your fridge, cupboard or fruit bowl, and check the origins (来源) of the food. Perhaps there are apples from California, lamb from New Zealand, or potatoes from Egypt. 31 This journey from field to plate is called “food miles”—the distance that food travels from its production to the person who buys it. Nowadays, food often travels thousands of miles to get to the consumers. Why does this happen and what are the effects of these long distances
Traditionally, farmers sold their food in the local market so the food didn’t have to travel very far. The consumers also did not go far away, because they went to their local market to buy the food. This was a good system for farmers and consumers. 32 For example, consumers could only buy food that local farmers produced. In addition, they could only get food that was in season. Now, because of modern technology, food comes from all over the world. We do not have to wait for spring or summer to buy strawberries or tomatoes. 33
However, some countries have to import most of their food. This is because they have a bad climate. The United Arab Emirates (UAE), for example, gets 90% of its food from other countries. Even food made in the UAE often uses imported materials.
What’s wrong with “food miles” Is the practice not a good way of increasing international trade I believe it is for a number of reasons. First of all, because food travels such long distances, we need more planes, lorries, and ships to move the food. 34 In addition, food that travels a long way is not fresh and is usually not very tasty. Tomatoes, for example, are picked early and stored for their long journey. For this reason, they are usually tasteless when they get to the consumers. Local food has a better taste, and it also reduces the amount of global pollution. 35
A．So we’d better buy more local food.
B．We can’t buy local food at any time.
C．They are available in winter if we want.
D．Eating more fruit is good for our health.
E．However, there were some disadvantages.
F．You will probably be surprised how far food travels to get to your plate.
G．This means we use more oil or petrol, so there is more pollution and global (全球的) warming may worsen.
第四部分 词汇运用（共20小题；每小题1分，满分20分）
第一节 根据下列句子所给汉语注释或首字母，写出空缺处各单词的正确形式。每空限填一词。
36．Read the ________ (操作指南) carefully before using.
37．Please ________ (做记号) the sentences you don’t understand.
38．The ________ (绿化) of the town changes the environment greatly.
39．The ________ (记者) will write a report about recycling.
40．We should ________ (尊重) wild animals.
41．Her grandpa suddenly felt u________ and went to the hospital this morning. Luckily, there was nothing serious.
42．Without parents’ a________, teenagers shouldn’t stay out late on weekdays.
43．An elephant is able to use a lot of body language, i________ ear signals and gestures.
44．The w________ thing in life is to give up easily when you are in great trouble.
45．We must a________ spreading our own personal information online.
阅读短文，用方框中所给词填空，使文章通顺、连贯、合理。（每个单词限用一次，每空限填一个单词）
reused, when, pollution, matters, everyone, turning, us, educate, difference, cloth
Protecting the environment is a task that 46 should take part in, as it influences the health of our planet and future generations. Even small, daily actions can add up to make a big 47 in reducing pollution and saving natural resources.
First, we can cut down on plastic use. Instead of using single-use plastic bags, we can carry reusable 48 bags when shopping. Instead of buying plastic water bottles, we can use stainless steel (不锈钢) bottles that can be 49 many times. This not only reduces the plastic waste but also lowers the energy used to produce new plastic products.
Second, we can save energy at home and school. 50 off lights, computers, and other electronics 51 they’re not in use, using LED bulbs (which use less energy than traditional ones), and keeping the air conditioner at a moderate temperature are all easy ways to reduce energy waste.
Third, we can support green transportation. Walking or riding a bike for short trips, taking public transport like buses or subways instead of cars can cut down the number of cars on the road. Fewer cars mean less air 52 and less traffic, making our cities cleaner and healthier.
Fourth, we can take part in environmental activities. Many communities organize tree-planting days, park clean-ups, or recycling drives. Participating in these activities not only helps the environment directly but also lets 53 meet other people who care about the same cause, making us feel part of a larger effort.
It’s also important to 54 others about environmental problems. We can talk to our family and friends about simple ways to protect the environment, make posters for our school hallway, or write articles for the school newspaper. The more people know about the importance of protecting the planet, the more likely they are to take action.
Even if we face difficulties—like forgetting our reusable bags or not having time to join a clean-up—we shouldn’t give up. Every small effort 55 , and over time, these efforts will help create a greener, more sustainable world for everyone.
第五部分 短文填空（共10小题；每小题1分，满分10分）
阅读短文，在空白处填入一个适当的单词或括号内单词的正确形式。
There was once a large bottle of fresh, clean water. Every drop in the bottle took 56 (proud) in being so clear and pure (纯净的).
But one day, one of the 57 (drop) got bored. He would like to see what it would be like to be a dirty drop. The other drops tried to talk him out of the idea, but failed.
When the drop came back all dirty, all the other drops in the bottle were influenced and changed into dirty drops, too. Several months later, someone put the bottle in a pool. A lot of clean water entered the large bottle, and the drops 58 (final) made themselves pure again.
Now the drops reach 59 agreement that if they want to be clean, then each of them will have to stay clean. 60 (correct) the mistake of even one single drop needs much hard work.
In a way, this bottle of water is similar 61 the situation on the Earth. If we want to live on a clean planet, it’s necessary for each of 62 (we) to be a “clean drop”. 63 (whenever) someone or a country becomes a “dirty drop” and pollutes the air or the ocean, the whole Earth will become a bit 64 (dirty) than before. The same may also happen to you and your class. If you want your class to be excellent, then each of you will need 65 (value) the rules and behave (表现) well. Are you a “clean drop”
阅读表达（共5小题；每小题2分，满分10分）
阅读下面的短文，根据短文内容回答下列问题，每题答案不超过6个单词
A Cleaner Future
We all want to live in a clean and healthy environment. But pollution is harming our planet. Air pollution makes the sky gray. Water pollution makes rivers and oceans dirty. Soil pollution affects the food we eat. Noise pollution causes stress. Light pollution stops us from seeing the stars.
The good news is that we can all help. We can walk or ride a bike instead of driving a car. We can turn off lights when we leave a room. We can recycle paper, plastic and glass. We can plant more trees. We can also use fewer chemicals and pesticides. By doing these simple things, we can make a big difference. We can create a cleaner and greener future for everyone.
66．What makes the sky gray
67．What does soil pollution affect
68．What can we do instead of driving a car
69．What should we do when we leave a room
70．What can we plant more of
书面表达（共1题；满分25分）
71．假设你是中学生李丽，下周学校将举办以“校园环境日”为主题的系列活动，希望同学们积极参加。请给校报写一封邮件，用英语分享一下“校园环境日”活动。
写作要点：
1. What’s the purpose of this special day
2. What will the students in your school do
3. What else will you do after classes in the future
写作要求：
1. 不能出现真实的姓名和学校名。
2. 可适当加入细节，使文章充实，行文连贯。
3. 字迹工整，语言精炼，表达准确，条理清晰。
4. 词数100左右。
Dear Editor,
____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
Yours,
Li Li
/ 让学习更有效 单元培优卷 | 英语学科
/ 让学习更有效 单元培优卷 | 英语学科
21世纪教育网(www.21cnjy.com)
21世纪教育网(www.21cnjy.com)
参考答案及试题解析
1．A 2．B 3．B 4．C 5．A 6．D 7．B 8．D 9．B 10．A
【导语】本文围绕垃圾分类展开，介绍不同颜色垃圾桶的分类用途、桶身辅助标识、社区宣教与志愿者协助的推广方式，点明规范垃圾分类可减污节源，呼吁人人为环保尽一份力。
【解析】1．句意：为了给垃圾分类，我们把它们放进不同颜色的垃圾桶里。
结合语境分类垃圾的操作动作，固定搭配put…into…意为“把……放入……”，put意为“放置”符合语境。take“带走”、bring“带来”、get“得到”均不符合投放垃圾的动作逻辑。
2．句意：蓝色垃圾桶被用来回收纸张和塑料。
结合后文连续介绍各类垃圾桶用途，固定搭配be used for意为“被用于……”，used意为“被使用”契合句式。made“制作”、found“发现”、seen“看见”均不符合该固定用法。
3．句意：绿色垃圾桶用于厨余垃圾……。
结合前文“The blue bin is…for recycling paper and plastics”的并列句式，for用于说明用途，保持结构一致。with“和”、from“来自”、of“……的”均无法匹配用途说明的表达逻辑。
4．句意：分类垃圾并不是一件容易的事。
结合句子缺少主语的语法结构，动名词Sorting可作句子主语，Sorting意为“分类”。Sort为动词原形、Sorts为动词第三人称单数形式、Sorted为动词过去式/过去分词，三者都不能充当主语。
5．句意：所以除了颜色之外，每个垃圾桶上也还有标识和文字来帮助人们正确分类垃圾。
结合空格位于句中表“也”的用法，also意为“也”，适用于句中位置。too多用于句末、either用于否定句句末、neither意为“两者都不”，均不符合此处句式位置与语义。
6．句意：社区经常举办各类活动，教人们如何进行垃圾分类；有时你还能看到志愿者帮助人们把垃圾投入对应的垃圾桶。
结合语境活动是教授分类的方法技巧，how意为“如何、怎样”。what“什么”、when“何时”、where“何地”均无法对应学习分类方法的句意。
7．句意：社区经常举办各类活动，教人们如何进行垃圾分类；有时你还能看到志愿者帮助人们把垃圾投入对应的垃圾桶。
结合前后两个分句是顺承并列的逻辑关系，and意为“并且”表并列衔接。but表转折、or表选择或否则、so表因果，均不符合分句间逻辑。
8．句意：社区经常举办各类活动，教人们如何进行垃圾分类；有时你还能看到志愿者帮助人们把垃圾投入对应的垃圾桶。
结合投放垃圾的动作搭配，固定搭配put…into…意为“把……放进……”，into意为“到……里面”。in“在……内部”、on“在……上面”、at接小地点，均不契合投放动作的表达。
9．句意：通过正确地分类垃圾，我们可以减少污染、节约资源。
结合空格需要修饰动名词sorting的语法要求，correctly意为“正确地”，是副词可修饰动词性成分。correct是形容词、more correct是形容词比较级、most correct是形容词最高级，三者都不能修饰sorting。
10．句意：每个人都应该在保护环境这件事上尽自己的一份力。
结合固定短语搭配，do one’s part意为“尽某人的一份力”，do意为“做、履行”。make“制作”、take“拿走”、have“拥有”均无法构成该固定搭配。
11．B 12．B 13．A 14．A 15．B
【导语】本文主要介绍了水污染的成因及其带来的严重影响，并呼吁每个人通过养成绿色习惯来参与解决这一问题。
【解析】11．文章标题：“The Causes and Effects of Water Pollution”以及第一段：“Understanding the causes and effects of water pollution is the first step toward solving this problem”，可知本文主要围绕水污染的成因和影响展开论述。
12．第二段指出：“One of the main causes is industrial waste”，工业废物是水污染的主要原因之一。
13．第二段说明方式：“Farmers use fertilizers and pesticides to increase crop production. When it rains, these chemicals are washed into nearby water bodies, causing pollution”，农业活动是通过使用化肥和农药，经雨水冲刷流入水体从而造成污染的。
14．第三段指出：“Polluted water can cause many diseases in humans, such as cholera and typhoid”，水污染对人类的影响之一是会导致许多疾病。
15．最后一段指出：“Everyone can play a part in reducing water pollution by adopting greener habits in their daily lives”，作者建议每个人都应该在日常生活中养成更绿色的习惯来减少污染。
16．B 17．B 18．C 19．B 20．B
【导语】本文主要介绍了环境保护中的“三个R”原则（减少、再利用、回收），解释了它们的具体含义并举例说明，最后阐述了遵循这些原则对减少污染和保护地球的重要性。
【解析】16．根据第三句“Reduce means trying to produce less trash.”可知，reduce的意思是试图产生更少的垃圾。
17．根据第五、六句“Reuse means using things again or in another way… donate old clothes to charity.”可知，捐赠旧衣服属于重复使用的例子。
18．根据倒数第三句“We can recycle paper, glass, metal and plastic.”可知，我们可以回收纸、玻璃、金属和塑料。
19．根据倒数第二句“By following these three Rs, we can reduce pollution and protect our planet.”可知，遵循三个R原则可以帮助减少污染并保护我们的星球。
20．通读全文可知，文章开篇指出“They are important rules for environmental protection.”，随后详细介绍了三个R原则的内容及意义，主旨是强调三个R原则对环境保护的重要性。
21．B 22．B 23．C 24．B 25．B
【导语】本文是一篇说明文，主要介绍了塑料污染这一严峻的环境问题，阐述了塑料袋对野生动物的危害，提出了重复使用塑料袋的解决方案，并呼吁社区和个人共同参与保护环境。
【解析】21．原文第一段“Plastic pollution is one of the biggest environmental problems today.”，明确说明塑料污染是当今最大的环境问题之一。
22．原文第一段“These bags end up in rivers and oceans, harming wildlife.”，说明塑料袋最终往往会流入河流和海洋。
23．原文第二段“One way is to reuse them.”，建议处理塑料袋的一个好方法是重复使用它们。
24．原文第三段“By reusing plastic bags, we can cut down pollution and recreate a greener world.”，说明通过重复使用塑料袋，我们可以减少污染并重建一个更绿色的世界。
25．原文第三段“Many communities have renewed calls for reducing plastic use.，说明许多社区已经重新呼吁减少塑料的使用。
26．B 27．B 28．B 29．B 30．B
【导语】本文先指出地球正遭受多维度的污染、向人类发出求救信号，随后介绍了从防控污染、全民行动到植树造林等多种保护地球的举措，呼吁人类共同守护唯一的地球家园。
【解析】26．根据第一段内容“Many factories are polluting the air and water…Other pollutions are also becoming more and more serious. Earth is crying for help!”可知，地球呼救是因为它正遭受多方面的污染。
27．根据第二段中“For example, factories should use modern technology to stop producing pollution”可知，工厂应该使用现代技术来阻止产生污染。
28．根据第二段中“As we all know, small acts can make a big difference”可知，作者认为小小的举动也能产生巨大的影响。
29．根据第二段中“because trees are the lungs of Earth and can help clean the air”可知，树木重要是因为它们是地球之肺且能帮助净化空气。
30．通读全文可知，文章第一段介绍了地球面临的污染问题，第二段提出了保护地球的建议措施，故文章主旨是B项“我们应该保护我们的环境”。
31．F 32．E 33．C 34．G 35．A
【导语】本文是一篇说明文，主要介绍了“食物里程”的概念，对比了传统本地食物系统与现代全球食物运输的利弊，分析了长距离运输带来的环境问题，并建议人们购买本地食物。
【解析】31．根据文章第1段“Perhaps there are apples from California, lamb from New Zealand, or potatoes from Egypt.（也许有来自加利福尼亚的苹果、新西兰的羊肉或埃及的土豆。）”以及后文“This journey from field to plate is called ‘food miles’（从田间到餐盘的这段旅程被称为‘食物里程’）”可推知结论，前文列举了食物来源地之远，选项F“You will probably be surprised how far food travels to get to your plate.”表达了对距离的惊讶，引出后文对食物里程的定义。
32．根据文章第2段“This was a good system for farmers and consumers.（这对农民和消费者来说是一个很好的系统。）”以及后文“For example, consumers could only buy food that local farmers produced.（例如，消费者只能购买当地农民生产的食物。）”可推知结论，前文提到是好的系统，后文列举了局限性，选项E“However, there were some disadvantages.”表示转折并引出了缺点。
33．根据文章第2段“We do not have to wait for spring or summer to buy strawberries or tomatoes.（我们不必等到春天或夏天才能买到草莓或西红柿。）”可推知结论，前文说明不需要等待特定季节，选项C“They are available in winter if we want.”进一步说明了这些食物在其他季节（如冬天）也能获得。
34．根据文章第4段“First of all, because food travels such long distances, we need more planes, lorries, and ships to move the food.（首先，因为食物运输距离如此之远，我们需要更多的飞机、卡车和轮船来运输食物。）”可推知结论，前文提到需要更多交通工具，选项G“This means we use more oil or petrol, so there is more pollution and global (全球的) warming may worsen.”说明了使用这些交通工具消耗燃料并导致的污染的后果。
35．根据文章第4段“Local food has a better taste, and it also reduces the amount of global pollution.（当地食物味道更好，也能减少全球污染量。）”可推知结论，前文阐述了当地食物的优点，选项A“So we’d better buy more local food.”是基于这些优点得出的购买建议。
36．instructions
【解析】句意：使用前请仔细阅读操作指南。根据中文提示“操作指南”及句意可知，此处指产品附带的说明文件，英文常用instructions表示“说明书；操作指南”，且通常用复数形式，故填instructions。
37．mark
【解析】句意：请把你不理解的句子做上记号。本句是祈使句，“please”后接动词原形；根据汉语提示，mark意为“做记号”，符合语境。故填mark。
38．greening
【解析】句意：这座城镇的绿化极大地改变了环境。括号内“绿化”对应名词化动名词greening，“the+动名词+of”构成名词短语，在句中作主语，因此填greening。
39．reporter
【解析】句意：这个记者将写一篇关于回收的报道。根据汉语提示可知，这里需要填名词，reporter；根据“write a report”写一篇报道可知，这里需要单数。故填reporter。
40．respect
【解析】句意：我们应当尊重野生动物。根据汉语提示可知，respect意为“尊重”，动词。句中情态动词should后必须接动词原形，故填respect。
41．uncomfortable/ncomfortable
【解析】句意：她爷爷今早突然感到身体不适，去了医院。幸运的是并无大碍。“felt”为系动词，后接形容词作表语。结合首字母和后文前往医院且病情不严重的语境，此处需要uncomfortable表示“不舒服”，符合句意。故填uncomfortable。
42．agreement/greement
【解析】句意：没有父母的许可，青少年工作日不应该在外逗留到很晚。根据句意和首字母a提示，此处对应单词agreement，意为 “同意、许可”。名词所有格parents’后接名词agreement符合语法。
43．including/ncluding
【解析】句意：大象能够使用很多肢体语言，包括耳朵信号和手势。空后是前句的包含内容，including是介词，意为“包括”，后面接列举的名词，在句中作状语，用来举例说明前文body language包含的内容。
44．worst/orst
【解析】句意：生活中最糟糕的事情就是在遇到大麻烦时轻易放弃。根据首字母提示和语境，此处表示“最糟糕的”，形容词worst符合语境，the后常接形容词最高级。
45．avoid/void
【解析】句意：我们必须避免在网上传播自己的个人信息。“must”后接动词原形，结合首字母“a”，“avoid”（避免）符合语境，且“avoid doing sth.”是固定搭配。
46．everyone 47．difference 48．cloth 49．reused 50．Turning 51．when 52．pollution 53．us 54．educate 55．matters
【导语】本篇是说明文，主要讲述每个人都可以从日常小事做起保护环境，介绍了减少塑料使用、节约能源、绿色出行、参与环保活动、宣传环保理念等多种环保方式，呼吁大家坚持微小行动共建可持续的绿色家园。
【解析】46．句意：保护环境是一项每个人都应该参与的任务，因为它关乎我们星球和子孙后代的健康。空格在定语从句中充当主语，指代人，everyone含义为“每个人”，符合语境中号召全民参与环保的主旨。
47．句意：即便是微小的日常行动，累积起来也能在减少污染、节约自然资源方面产生巨大影响。make a big difference为固定表达，difference含义为“差异、影响”，构成短语表示“产生重大作用”。
48．句意：我们不用一次性塑料袋，可以在购物时携带可重复使用的布袋。空格修饰后面名词bags，cloth含义为“布料”，cloth bags表示“布袋”，贴合减少塑料用品的环保举措。
49．句意：我们可以使用能够被多次重复利用的不锈钢水杯。句子为含有情态动词的被动语态，结构为can be+过去分词，reused是reuse的过去分词，reused含义为“被重复使用”。
50．句意：在不用的时候关掉电灯、电脑和其他电子设备、使用LED灯泡、把空调调到适宜温度，这些都是减少能源浪费的简单方法。本空在句子开头作主语，方框中的turning位于句首作主语，首字母需大写为Turning，turn off含义为“关闭”，动名词形式可作句子主语。
51．句意：在不用的时候关掉电灯、电脑和其他电子设备、使用LED灯泡、把空调调到适宜温度，这些都是减少能源浪费的简单方法。空格引导时间状语从句，when含义为“当……的时候”，用来限定电器闲置的时间条件。
52．句意：更少的车辆意味着更少的空气污染和更少的拥堵，让我们的城市更洁净、更宜居。air pollution为常用搭配，pollution含义为“污染”，air pollution表示“空气污染”。
53．句意：参与这些活动不仅能直接助力环境，还能让我们结识其他志同道合的环保人士，让我们感受到集体努力的力量。动词lets后面需要用人称代词宾格形式，us含义为“我们”，充当let的宾语。
54．句意：向他人普及环保问题也十分重要。It is important to do sth为固定句式，to后接动词原形，educate含义为“教育、普及知识”，educate others表示“向他人宣传环保知识”。
55．句意：每一份微小的努力都至关重要，久而久之，这些努力会为所有人打造一个更绿色、更可持续的世界。主语Every small effort为单数，谓语动词使用第三人称单数形式，matters含义为“要紧、有重要意义”。
56．pride 57．drops 58．finally 59．an 60．Correcting 61．to 62．us 63．Whenever 64．dirtier 65．to value
【导语】本文以水滴污染又净化的小故事作喻，告诉我们个体行为会影响整体，每个人都要约束自身、爱护环境与集体。
【解析】56．句意：瓶里的每一滴水都为自身清澈纯净而自豪。固定搭配：take pride in表示“为……感到自豪”。“proud”是形容词，此处需用名词“pride”。
57．句意：但有一天，其中一滴水感到厌烦了。one of+可数名词复数，表示“……之一”，需用“drop”的复数形式“drops”。
58．句意：大量干净的水流进大瓶子，水滴们最终重新变得纯净。修饰动词“made”，需用副词。“final”是形容词，需用“finally”。
59．句意：水滴们达成共识：想要保持洁净，每一滴水都必须自身干净。“agreement”以元音音素开头，固定短语：reach an agreement表示“达成共识”，故需用“an”。
60．句意：哪怕只是纠正一滴水犯下的错误，都需要付出巨大努力。句子缺少主语，动词作主语需变为动名词形式，放在句首，首字母大写，故需用“Correcting”。
61．句意：从某种意义上来说，这瓶水和地球当下的处境很相像。固定搭配：be similar to表示“与……相似”，故需用“to”。
62．句意：如果我们想要生活在洁净的星球上，我们每个人都必须做一滴“干净的水滴”。介词“of”后接人称代词宾格，“we”的宾格为“us”。
63．句意：每当某个人或是某个国家化身 “脏水滴”，污染空气、海洋时，整个地球都会比之前脏上几分。提示词为“whenever”，引导让步状语从句，表示“无论何时、每当”。单词位于句首，首字母大写，故需用“Whenever”。
64．句意：整个地球都会比之前更脏一点。句中有比较级标志词“than”，表示两者对比，要用形容词比较级。故需用“dirty”的比较级为“dirtier”。
65．句意：如果你们想让班级变得优秀，你们每个人都必须重视规则、规范言行。固定用法：need to do sth.表示“需要做某事”，动词“value”要变为不定式“to value”。
66．Air pollution. 67．The food we eat. 68．Walk or ride a bike. 69．Turn off lights. 70．More trees.
【导语】本文介绍了各类污染带来的危害，列举了多种保护环境、打造洁净未来的可行做法。
【解析】66．第一段指出“Air pollution makes the sky gray.”，空气污染让天空灰蒙蒙。
67．第一段指出“Soil pollution affects the food we eat.”，土壤污染影响我们食用的食物。
68．第二段指出“We can walk or ride a bike instead of driving a car.”，我们可以步行或骑车代替开车。
69．第二段指出“We can turn off lights when we leave a room.”，离开房间时要关灯。
70．第二段指出“We can plant more trees.”，我们可以多种树。
71．例文：
Dear Editor,
Warm regards to you! The “Campus Environment Day” is of great significance. Its purpose is to create a beautiful and tidy environment and spread the idea of environmental protection.
Some activities will be held in our school next week. Some students will plant trees while others will clean the school. Besides, we’ll work together to put up posters in the hallways to remind everyone to care about our campus. I’ll not only stick to joining in such activities but also organize classmates to form an environmental protection group. We’ll carry out activities to make our campus a better place.
I hope it can inspire more of us to join.
Yours,
Li Li
【解析】写作步骤
[第一步：审题立意]
确定文体：电子邮件，以一般将来时为主
明确要点：活动的目的、学校学生将要做什么、 未来课后你还会做什么
确定人称：第一人称（I/we）
注意事项：不能出现真实的姓名和学校名
[第二步：构思布局]
三段式结构：
开头段：引出“Campus Environment Day”，介绍活动目的
主体段：介绍学校学生的各项活动
结尾段：说明自己未来课后的行动，发出呼吁
[第三步：要点展开]
要点一：活动的目的
活动目的：create a beautiful and tidy environment/spread the idea of environmental protection/build a nice and neat campus environment/promote environmental protection awareness等
作用效果：make our campus a better place/improve our campus environment等
要点二：学校学生将要做什么
学生活动：plant trees/clean the school/put up posters in the hallways/plant saplings/do campus cleaning/put environmental friendly notices on hall walls等
目的：remind everyone to care about our campus/call on students to value our school campus等
要点三：未来课后你还会做什么
个人行动：stick to joining in such activities/organize classmates to form an environmental protection group/carry out activities/take part in such meaningful activities/gather classmates to set up an environment group/hold related practical activities等
目标效果：make our campus a better place/help our campus become much better等
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