Unit5 A delicate world单元练习-2025-2026学年外研版高中英语选择性必修第二册
（考试时间：120分钟满分：150分）
第一部分语言知识运用（共两节，满分45分）
第一节单句语法填空（共10小题；每小题1.5分，满分15分）
1. Many consumers were annoyed ________ the illegal additives in food exposed in the 3·15 Gala.
2. It is vital for us ________ (protect) the delicate ecosystem immediately.
3. The government calls on us ________ (raise) awareness of wildlife conservation.
4. Experts are worried ________ the sharp drop in endangered species population.
5. We must act ________ (preserve) biodiversity for the next generation.
6. No one knows ________ the ecosystem can recover in such a short time.
7. Human activities are responsible ________ global environmental chaos.
8. It is high time that we ________ (take) action against water pollution.
9. They are devoted to ________ (restore) the natural habitat.
10. We should focus on ________ (live) in harmony with nature.
第二节单词拼写（共10小题；每小题1.5分，满分15分）
根据下列句子及所给汉语注释，写出空缺处各单词的正确形式（每空只写一词）
11.The loss of______(生物多样性)has become one of the most serious environmental problems.
12.The______(侵蚀)of soil has been worsened due to overgrazing and deforestation.
13.Many rare animals are on the brink of______(灭绝)because of habitat destruction.
14.The______(大量的)rainforest destruction has led to drastic changes in the global climate.
15.The local government has taken measures to______(保护)the endangered species in this area.
16.The spread of the______(病毒)has caused a sharp decline in the population of wild animals.
17.The______(崩溃)of the local ecosystem resulted from the introduction of invasive species.
18.We should______(减少)the use of plastic products to reduce environmental pollution.
19.The______(混乱)in the ecosystem was caused by human overexploitation of natural resources.
20.The______(栖息地)of many wild animals has been destroyed by urban expansion.
第二部分阅读理解（共两节，满分50分）
第一节（共15小题；每小题2.5分，满分37.5分）
阅读下列短文，从每题所给的A、B、C和D四个选项中，选出最佳选项
A
Welcome to Green Eco-Tourism Guide!As we celebrate the 2025"3·15 International Consumer Rights Day"with the theme of"Building Satisfactory Consumption Together",we are committed to providing you with eco-friendly travel services that protect our delicate world.
Our eco-tourism routes cover 5 national nature reserves,where you can enjoy the unique scenery while minimizing your environmental impact.All our tour buses use new energy,and our guides are professionally trained in ecological protection.
We strictly prohibit any behavior that may damage the ecosystem,such as picking wild plants,disturbing wild animals,or littering.We provide reusable water bottles and cloth bags to all tourists to reduce plastic waste.
By choosing our eco-tourism services,you are not only enjoying a wonderful journey but also contributing to the protection of biodiversity.10%of our profits will be donated to wildlife conservation funds.
Join us in exploring the beauty of nature while being a responsible consumer and environmental protector!
21.What is the theme of the 2025"3·15 International Consumer Rights Day"
A.Protecting Wild Animals
B.Building Satisfactory Consumption Together
C.Reducing Plastic Waste
D.Developing Eco-Tourism
22.What can we learn about the eco-tourism routes
A.They cover 5 urban parks. B.Tourists can pick wild plants freely.
C.All tour buses use new energy. D.Profits are all used for company development.
23.What is the purpose of this text
A.To introduce consumer rights. B.To attract tourists to eco-tourism.
C.To warn people of environmental dangers. D.To tell people how to choose travel agencies.
B
Last summer,16-year-old Li Wei made a life-changing decision to protect the wetland near his hometown.The wetland,home to hundreds of species of birds and plants,was facing serious threats from illegal fishing and pollution.
Li Wei first noticed the problem when he found many dead fish floating on the water and some birds losing their habitats.He decided to take action instead of just feeling sad.He joined a local conservation group and began to volunteer every weekend.
Every Saturday morning,Li Wei and other volunteers would clean up the garbage in the wetland,remove invasive plants,and patrol to stop illegal fishing.They also distributed leaflets to raise awareness among local residents.
Sometimes,they faced difficulties.Some fishermen were angry when stopped and even threatened them.But Li Wei never gave up."This wetland is our home.If we don't protect it,who will "he always said.
After months of hard work,the wetland began to recover.The water became clearer,and more birds returned.Their efforts were recognized by the local government,which passed new laws to protect the wetland.
Li Wei's story tells us that everyone can make a difference in protecting our delicate world.Small actions can lead to great changes.
24.What threatened the wetland near Li Wei's hometown
A.Urban expansion B.Illegal fishing and pollution
C.Climate change D.Natural disasters
25.What did Li Wei do to protect the wetland
A.He built a new habitat for birds.
B.He asked the government for help directly.
C.He volunteered with a conservation group.
D.He gave speeches to protect the environment.
26.What does the underlined word"patrol"probably mean
A.Walk around to check B.Fight against bravely
C.Research carefully D.Talk with patiently
27.What can we learn from Li Wei's story
A.Great efforts always overcome difficulties.
B.Young people should focus on study.
C.Protection needs support from the government.
D.Everyone can contribute to environmental protection.
C
The world's oceans are facing a growing threat from plastic pollution,which has become a serious ecological problem.According to a recent report,over 8 million tons of plastic waste enter the oceans every year,causing great damage to marine ecosystems.
Plastic waste in the ocean has many forms,including plastic bags,bottles,and microplastics from broken-down larger plastics.These plastics can take hundreds of years to decompose,and during this time,they cause severe harm to marine life.
Many sea animals mistake plastic for food.Turtles often eat plastic bags thinking they are jellyfish,and seabirds feed plastic pieces to their chicks.This can cause internal injuries,starvation,and death.Studies show that over 90%of seabirds have plastic in their stomachs.
Microplastics,tiny plastic particles less than 5mm in size,are even more dangerous.They can absorb toxic chemicals and enter the food chain.When fish eat microplastics,the chemicals accumulate in their bodies.Eventually,these toxins can end up in the human body when we eat seafood.
The 2025"3·15 Gala"exposed many products containing harmful plastics,highlighting the need for stronger regulations.Governments and businesses should work together to reduce plastic production and improve waste management.
As consumers,we can also help by reducing single-use plastics,properly disposing of waste,and choosing eco-friendly products.Protecting the ocean ecosystem is not only important for marine life but for our own health and future.
28.What is the main idea of the text
A.Ocean pollution is affecting human health.
B.Plastic pollution threatens marine ecosystems.
C.Seabirds are suffering from plastic waste.
D.The 3·15 Gala exposed plastic problems.
29.How do plastics harm sea animals
A.They destroy their living habitats.
B.They cause water temperature to rise.
C.They are mistaken for food and cause death.
D.They produce harmful chemicals to kill them.
30.What does the author suggest consumers do
A.Stop using all plastic products. B.Choose eco-friendly products.
C.Work for conservation groups. D.Report illegal plastic producers.
31.Which of the following is the best title for the text
A.Protecting Our Delicate Marine Ecosystem B.The Danger of Microplastics in Oceans
C.3·15 Focus on Product Quality D.How to Reduce Plastic Waste
D
The relationship between consumption and environmental protection has become a hot topic as we celebrate"3·15 International Consumer Rights Day".While consumption drives economic growth,it also places significant pressure on our delicate ecosystem.Striking a balance between the two is crucial for sustainable development.
On one hand,reasonable consumption is essential.It improves people's quality of life and promotes economic development.However,excessive and irrational consumption leads to overuse of natural resources and environmental degradation.The 2025"3·15 Gala"exposed various problems,including products with excessive packaging and harmful ingredients,which not only violate consumer rights but also damage the environment.
Many industries prioritize profits over environmental protection.They produce large quantities of low-quality,short-lived products that quickly become waste.This"throw-away culture"has led to mountains of garbage and resource depletion.For example,the fashion industry produces huge amounts of waste,with many garments containing chemicals that pollute water and soil.
On the other hand,protecting the environment does not mean giving up consumption.It means shifting to green and sustainable consumption patterns.Green consumption emphasizes choosing products that are environmentally friendly,durable,and made from recycled materials.
Businesses have a responsibility to produce eco-friendly products and reduce their environmental impact.Governments should establish strict regulations to ensure product quality and environmental standards.Consumers,as the driving force of the market,should make wise choices and support green products.
The theme of 2025"3·15"-"Building Satisfactory Consumption Together"-should include environmental satisfaction.We need to build a consumption system that respects nature and protects ecosystems.Only in this way can we ensure both economic development and environmental protection,creating a better world for ourselves and future generations.
32.What is the author's attitude towards consumption
A.All consumption is bad for the environment.
B.Reasonable consumption is acceptable.
C.Consumption should be completely stopped.
D.Consumption is more important than protection.
33.What does the"throw-away culture"bring
A.Economic prosperity B.Resource depletion
C.Technological progress D.Quality improvement
34.What does green consumption emphasize
A.Buying cheap products B.Choosing expensive products
C.Selecting eco-friendly products D.Purchasing fashionable products
35.What is the author's purpose in writing the text
A.To introduce the 3·15 consumer rights day.
B.To criticize excessive consumption.
C.To call for balanced consumption and protection.
D.To explain the importance of environment.
第二节七选五（共5小题；每小题2.5分，满分12.5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。选项中有两项为多余选项
Technology plays an increasingly important role in protecting our delicate world.36.______Here are some innovative ways technology is helping with conservation.
Drones(无人机)are revolutionizing wildlife monitoring.37.______They can count animal populations,track invasive species,and detect illegal activities like poaching or logging in remote areas that are difficult for humans to reach.
38.______Environmental sensors can measure water quality,air pollution,and soil conditions in real time.These sensors send data to monitoring centers,allowing scientists to detect environmental problems early and take immediate action.
DNA technology is another powerful tool.39.______This helps track illegal wildlife trade and identify species at risk.For example,officials can use DNA testing to determine whether meat sold in markets comes from protected animals.
Artificial intelligence(AI)is also making a difference.AI algorithms can analyze huge amounts of environmental data to predict ecological changes.40.______
While technology alone cannot solve all environmental problems,it provides powerful tools to support conservation bining technology with human wisdom and determination,we can better protect our planet's biodiversity.
A.They can cover large areas quickly and safely.
B.It helps protect ecosystems from being destroyed.
C.It can identify species from small samples like hair or feathers.
D.Advanced monitoring systems are widely used in environmental protection.
E.This helps scientists develop effective protection strategies.
F.Many young people are interested in environmental technology.
G.It provides new solutions to traditional conservation challenges.
第三部分语言知识运用（共两节，满分45分）
第一节完形填空（共15小题；每小题1分，满分15分）
阅读下面短文，从短文后各题所给的A、B、C和D四个选项中，选出可以填入空白处的最佳选项
Last year,our neighborhood decided to transform a 41.______vacant lot into a community garden.The lot had been filled with garbage and weeds for years,becoming a 42.______to the local environment.
We started by cleaning up the trash.Over 50 volunteers 43.______every weekend,collecting bags of garbage and removing invasive plants.It was hard work,but 44.______kept us going.
Next,we improved the soil.We 45.______organic waste and leaves to make the soil more fertile.Some experts came to 46.______us on which plants were suitable for the local area.
We chose native plants that could 47.______with local insects and birds.We also built a small pond to 48.______water and provide a habitat for frogs and dragonflies.
Within a few months,the garden began to 49.______.Beautiful flowers bloomed,and butterflies and bees came to 50.______the nectar.Birds built nests in the bushes,and we could hear their 51.______every morning.
The garden has brought 52.______changes to our neighborhood.It has become a beautiful 53.______for residents to relax and connect with nature.It has also 54.______our community and taught us the importance of protecting our 55.______world.
41.A.small B.dirty C.beautiful D.new
42.A.landmark B.resource C.danger D.beauty
43.A.gathered B.left C.slept D.traveled
44.A.sadness B.doubt C.hope D.anger
45.A.burned B.added C.removed D.sold
46.A.ask B.warn C.blame D.advise
47.A.compete B.fight C.coexist D.compare
48.A.waste B.collect C.pollute D.pump
49.A.collapse B.disappear C.grow D.thrive
50.A.drink B.collect C.buy D.sell
51.A.songs B.cries C.fights D.steps
52.A.negative B.rapid C.small D.amazing
53.A.place B.machine C.company D.book
54.A.divided B.strengthened C.hurt D.weakened
55.A.delicate B.powerful C.large D.rich
第二节 语篇语法填空（共10小题；每小题3分，满分30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
Protecting biodiversity is crucial for 56.______(maintain)the balance of our delicate ecosystem.Every species,no matter how small,plays 57.______important role in nature.
In recent decades,human activities 58.______(cause)great damage to natural habitats.Forests are being cut down,rivers 59.______(pollute),and wetlands are disappearing.As 60.______result,many species have become endangered or extinct.
61.______(fortune),more and more people are realizing the importance of conservation.Many countries have established nature reserves 62.______(protect)endangered species.Local communities are also getting involved in 63.______(variety)conservation projects.
Individual actions matter too.Simple things like 64.______(save)water,reducing waste,and planting trees can make a big difference.It's our responsibility 65.______(protect)the planet for future generations.
第四部分写作（共两节，满分40分）
第一节应用文写作（满分15分）
假定你是李华，你校学生会将发起 "Green Consumption, Protect Our Delicate World" 主题活动，请你代表学生会写一封倡议书。
内容包括：
1. 活动背景：生态环境面临压力，绿色消费意义重大
2. 具体倡议：绿色消费、减少浪费、选用环保产品
3. 发出号召
Dear schoolmates,
Students’ Union
第二节读后续写（满分25分）
阅读下面短文，根据所给情节进行续写，使之构成一个完整的故事
Last spring,my class visited a local nature reserve that was well-known for its beautiful lake and diverse wildlife.Our guide,Mr.Chen,told us that the reserve was once a healthy ecosystem where many rare plants and animals lived.
However,years ago,some invasive species were introduced by accident.These species multiplied quickly and destroyed the natural habitat.The lake became polluted,and the number of native species decreased dramatically.The whole ecosystem was on the edge of collapse.
Several years ago,a conservation group decided to intervene.They began to remove the invasive species and clean up the lake.It was a long and difficult process.Volunteers worked tirelessly every weekend,pulling out harmful plants and collecting garbage.
During our visit,we saw many volunteers working in the reserve.Mr.Chen told us that their efforts were beginning to pay off.The water in the lake became clearer,and some native species started to recover.
When we walked along the path,we noticed a small group of young birds that we had never seen before.They were drinking water from the lake,looking healthy and lively.Some beautiful native flowers were blooming by the water.
My classmates and I were deeply moved by what we saw.We decided to do something to help.
注意：
1.续写词数应为150左右；
2.应使用5个以上短文中标有下划线的关键词语；
3.续写部分分为两段，每段的开头语已为你写好；
Paragraph 1:
As soon as we returned to school,we held a class meeting to discuss what we could do to help.
Paragraph 2:
Several months later,we visited the reserve again.Unit5 A delicate world单元练习-2025-2026学年外研版高中英语选择性必修第二册
答案及详细解析
（考试时间：120分钟满分：150分）
第一部分语言知识运用（共两节，满分45分）
第一节单句语法填空（共10小题；每小题1.5分，满分15分）
1.at/by 2.to protect 3.to raise 4.about 5.to preserve
6.whether 7.for 8.took 9.restoring 10.living
第二节单词拼写（共10小题；每小题1.5分，满分15分）
11.biodiversity 12.erosion 13.extinction 14.mass 15.conserve
16.virus 17.collapse 18.reduce 19.chaos 20.habitat
第二部分阅读理解（共两节，满分50分）
第一节（共15小题；每小题2.5分，满分37.5分）
21.B 22.C 23.B 24.B 25.C 26.A 27.D 28.B 29.C 30.B
31.A 32.B 33.B 34.C 35.C
第二节七选五（共5小题；每小题2.5分，满分12.5分）
36.G 37.A 38.D 39.C 40.E
第三部分语言知识运用（共两节，满分45分）
第一节完形填空（共15小题；每小题1分，满分15分）
41.B 42.C 43.A 44.C 45.B 46.D 47.C 48.B 49.D 50.B
51.A 52.D 53.A 54.B 55.A
第二节语篇语法填空（共10小题；每小题3分，满分30分）
Maintaining 57.an 58.have caused 59.are being polluted 60.a
61.Fortunately 62.to protect 63.various 64.saving 65.to protect
详细解析
第一部分语言知识运用
第一节单句语法填空解析
1.at/by：固定搭配be annoyed at/by sth.，意为“对某事感到恼怒”。
2.to protect：固定句型It is vital for sb.to do sth.，表示“对某人来说做某事至关重要”。
3.to raise：固定搭配call on sb.to do sth.，意为“号召某人做某事”。
4.about：固定搭配be worried about，意为“担心……”。
5.to preserve：不定式作目的状语，表示“为了保护”。
6.whether：引导宾语从句，意为“是否”。
7.for：固定搭配be responsible for，意为“对……负责”。
8.took：It is high time that从句中用一般过去时表示虚拟语气。
9.restoring：be devoted to中的to是介词，后接动名词作宾语。
10.living：focus on中的on是介词，后接动名词作宾语。
第二节单词拼写解析
11.The loss of biodiversity has become one of the most serious environmental problems.（生物多样性的丧失已经成为最严重的环境问题之一。）解析：名词，意为“生物多样性”，单元核心环保类词汇。
12.The erosion of soil has been worsened due to overgrazing and deforestation.（由于过度放牧和滥砍滥伐，土壤侵蚀愈发严重。）解析：名词，意为“侵蚀”，常用搭配soil erosion。
13.Many rare animals are on the brink of extinction because of habitat destruction.（由于栖息地遭到破坏，许多珍稀动物濒临灭绝。）解析：名词，意为“灭绝”，固定短语on the brink of extinction。
14.The mass rainforest destruction has led to drastic changes in the global climate.（大规模的雨林破坏导致了全球气候的剧烈变化。）解析：形容词，意为“大规模的；大量的”。
15.The local government has taken measures to conserve the endangered species in this area.（当地政府已采取措施保护该地区的濒危物种。）解析：动词，意为“保护；保存”，侧重生态与资源保护。
16.The spread of the virus has caused a sharp decline in the population of wild animals.（这种病毒的传播导致野生动物数量急剧下降。）解析：名词，意为“病毒”。
17.The collapse of the local ecosystem resulted from the introduction of invasive species.（当地生态系统的崩溃是由外来物种入侵造成的。）解析：名词，意为“崩溃；瓦解”。
18.We should reduce the use of plastic products to reduce environmental pollution.（我们应该减少塑料制品的使用以减少环境污染。）解析：动词，意为“减少”。
19.The chaos in the ecosystem was caused by human overexploitation of natural resources.（生态系统的混乱是由人类对自然资源的过度开发造成的。）解析：名词，意为“混乱；紊乱”。
20.The habitat of many wild animals has been destroyed by urban expansion.（许多野生动物的栖息地因城市扩张而遭到破坏。）解析：名词，意为“栖息地”。
第二部分阅读理解（语篇解读+逐题精解）
A篇绿色生态旅游
语篇解读：本文是一篇广告应用文，以环保旅游为核心主题，依托3·15消费日背景推广生态旅游项目。文章介绍了该项目覆盖五大国家级自然保护区、使用新能源车辆、推行无痕生态旅行，并将部分利润用于野生动物保护，旨在吸引游客选择绿色生态旅游，践行环保理念。
21.B细节理解题
定位：As we celebrate the 2025"3·15 International Consumer Rights Day"with the theme of"Building Satisfactory Consumption Together"（2025年3·15国际消费者权益日的主题为“共筑满意消费”）
解析：题目询问年度主题，原文直接明确给出，与选项完全对应。
22.C细节理解题
定位：All our tour buses use new energy（我们所有的旅游巴士都使用新能源）
解析：原文清晰陈述车辆能源类型，信息与选项一致。
23.B推理判断题
定位：Welcome to Green Eco-Tourism Guide!Join us in exploring the beauty of nature（欢迎来到绿色生态旅游指南！加入我们探索自然之美）
解析：本文为宣传广告，全文以吸引游客、推广生态旅游为目的。
B篇李伟保护湿地
语篇解读：本文是一篇记叙文，讲述16岁少年李伟主动保护家乡湿地的故事。湿地因非法捕捞和污染面临危机，李伟加入环保组织，坚持清理垃圾、清除入侵物种、巡逻宣传，最终湿地环境明显改善，并获得政府立法保护，彰显普通人参与环保的力量。
24.B细节理解题
定位：The wetland…was facing serious threats from illegal fishing and pollution（这片湿地正面临来自非法捕捞和污染的严重威胁）
解析：原文直接点明湿地面临的两大威胁。
25.C细节理解题
定位：He joined a local conservation group and began to volunteer every weekend（他加入了当地的一个环保组织，每个周末都去做志愿者）
解析：原文直接陈述李伟采取的核心行动。
26.A词义猜测题
定位：…patrol to stop illegal fishing（……巡逻巡查以制止非法捕捞）
解析：根据上下文动作目的，patrol意为“巡查、巡逻”。
27.D推理判断题
定位：Li Wei's story tells us that everyone can make a difference in protecting our delicate world（李伟的故事告诉我们，每个人都能为保护我们脆弱的世界发挥作用）
解析：文章结尾升华主旨，强调人人皆可为环保贡献力量。
C篇海洋塑料污染
语篇解读：本文是一篇事理说明文，围绕海洋塑料污染问题展开。文章介绍了海洋塑料污染的现状、塑料对海洋生物的危害、微塑料通过食物链威胁人类健康的机制，并呼吁政府、企业和消费者共同行动，减少塑料使用，保护海洋生态。
28.B主旨大意题
定位：The world's oceans are facing a growing threat from plastic pollution,which has become a serious ecological problem（全球海洋正面临日益严重的塑料污染威胁，这已成为一个严重的生态问题）
解析：文章首句为主题句，全文围绕此核心展开。
29.C细节理解题
定位：Many sea animals mistake plastic for food…This can cause internal injuries,starvation,and death（许多海洋动物把塑料误认为食物……这会造成内伤、饥饿和死亡）
解析：原文明确说明塑料危害海洋生物的具体方式。
30.B细节理解题
定位：As consumers,we can also help by…choosing eco-friendly products（作为消费者，我们可以通过选择环保产品来提供帮助）
解析：原文直接给出对消费者的具体建议。
31.A标题归纳题
解析：全文围绕海洋生态系统保护展开，涵盖污染、危害与对策，该项最能概括全文主旨。
D篇消费与生态保护
语篇解读：本文是一篇议论文，探讨消费与生态保护的平衡关系。作者认为合理消费促进发展，过度消费破坏环境；环保并非放弃消费，而是转向绿色可持续模式，呼吁政府、企业、消费者共同构建尊重自然的消费体系，实现发展与保护双赢。
32.B情感态度题
定位：reasonable consumption is essential（合理消费是必要的）
解析：作者明确支持合理、适度的消费行为。
33.B细节理解题
定位：This"throw-away culture"has led to mountains of garbage and resource depletion（这种“一次性文化”导致了堆积如山的垃圾和资源枯竭）
解析：原文直接说明一次性文化带来的后果。
34.C细节理解题
定位：Green consumption emphasizes choosing products that are environmentally friendly（绿色消费强调选择环保的产品）
解析：原文直接给出绿色消费的核心内涵。
35.C写作目的题
定位：Striking a balance between the two is crucial for sustainable development（为了可持续发展，平衡消费与保护至关重要）
解析：作者全文旨在呼吁平衡经济发展与生态保护。
七选五语篇解读
本文是一篇科技说明文，主题为“科技助力生态保护”，采用“总—分—总”结构，依次介绍无人机、环境监测传感器、DNA技术、人工智能在生态监测、物种保护、预警预测方面的创新应用，说明科技为传统环保提供新方案。
36.G解析：承接上文“科技在保护脆弱世界中日益重要”，总起下文“为传统保护挑战提供新解决方案”。
37.A解析：承接无人机话题，说明其“快速安全覆盖大面积区域”的优势。
38.D解析：引出环境监测系统，与后文传感器实时监测内容呼应。
39.C解析：说明DNA技术功能，可通过毛发、羽毛等微小样本识别物种。
40.E解析：承接AI分析数据，说明其作用“帮助科学家制定有效保护策略”。
第三部分语言知识运用
完形填空语篇解读
本文是一篇记叙文，讲述社区居民将废弃脏乱的空地改造为社区花园的故事。通过清理垃圾、改良土壤、种植本土植物、修建蓄水池塘，荒地变为绿洲，既改善了生态环境，又增强了社区凝聚力，呼应“保护脆弱世界”的主题。
完形填空完整解析
语篇解读
本文是一篇记叙文，讲述社区居民将一片长期堆满垃圾、杂草丛生的废弃空地改造成社区花园的过程。大家自愿清理垃圾、改良土壤、种植本土植物、修建小型池塘，最终让荒地重获生机，环境变美、邻里关系更紧密。文章以生活化的场景，传递人人参与、保护脆弱生态的单元主题。
逐题答案+全选项翻译+解析
41.B
答案dirty脏乱的
选项翻译A small小的C beautiful美丽的D new新的
解析：后一句提到filled with garbage and weeds堆满垃圾和杂草，说明这片空地原本脏乱，故选B
42.C
答案danger威胁，危险
选项翻译A landmark地标B resource资源D beauty美景
解析：长期脏乱的空地对当地环境构成威胁，故选C
43.A
答案gathered聚集，集合
选项翻译B left离开C slept睡觉D traveled旅行
解析：50多名志愿者每周末集合参与劳动，符合语境
44.C
答案hope希望
选项翻译A sadness悲伤B doubt怀疑D anger愤怒
解析：工作虽然辛苦，但希望支撑着大家坚持下去
45.B
答案added添加
选项翻译A burned燃烧C removed移除D sold售卖
解析：为了改良土壤，大家添加有机废料和树叶，提高土壤肥力
46.D
答案advise建议，指导
选项翻译A ask询问B warn警告C blame责备
解析：专家前来指导适合当地种植的植物
47.C
答案coexist共存
选项翻译A compete竞争B fight斗争D compare比较
解析：选择本土植物，能够与当地昆虫和鸟类和谐共存
48.B
答案collect收集
选项翻译A waste浪费C pollute污染D pump泵送
解析：修建小池塘用来收集水源，为青蛙和蜻蜓提供栖息地
49.D
答案thrive茁壮成长，繁荣
选项翻译A collapse崩溃B disappear消失C grow生长
解析：几个月后，花园开始生机勃勃，茁壮成长
50.B
答案collect采集
选项翻译A drink喝C buy买D sell卖
解析：蝴蝶和蜜蜂前来采集花蜜
51.A
答案songs歌声
选项翻译B cries叫声C fights打斗D steps脚步
解析：鸟儿在灌木丛中筑巢，每天清晨都能听到它们的歌声
52.D
答案amazing惊人的，了不起的
选项翻译A negative消极的B rapid快速的C small小的
解析：这个花园给社区带来了惊人的变化
53.A
答案place地方
选项翻译B machine机器C company公司D book书
解析：这里成为居民放松和亲近自然的好地方
54.B
答案strengthened增强，加强
选项翻译A divided分开C hurt伤害D weakened削弱
解析：花园也增强了社区凝聚力
55.A
答案delicate脆弱的
选项翻译B powerful强大的C large巨大的D rich富饶的
解析：教会我们保护我们脆弱的世界的重要性
语篇语法填空完整解析
语篇解读：本文是一篇说明文，围绕生物多样性保护展开。文章指出保护生物多样性对维持生态平衡至关重要，近几十年人类活动对自然栖息地造成严重破坏，越来越多的人开始重视生态保护，各国建立自然保护区，个人从小事行动，共同守护地球家园，主题贴合单元环保核心。
56.maintaining
解析：介词for后面接动名词作宾语，故用maintaining
57.an
解析：固定搭配play an important role，important以元音音素开头，用不定冠词an
58.have caused
解析：时间状语in recent decades是现在完成时的标志，故用have caused
59.are being polluted
解析：与前文are being cut down构成并列，使用现在进行时的被动语态
60.a
解析：固定短语as a result，表示结果
61.Fortunately
解析：副词置于句首修饰整个句子，表示“幸运的是”
62.to protect
解析：不定式作目的状语，表示“为了保护”
63.various
解析：形容词作定语修饰后面的名词projects，表示“各种各样的”
64.saving
解析：介词like后面接动名词作宾语，故用saving
65.to protect
解析：固定句型It’s one’s responsibility to do sth.，不定式作真正主语
第四部分写作（范文+详细解题思路）
第一节应用文写作（倡议书）
Dear schoolmates,
Nowadays, our earth is facing serious ecological problems, and it is significant for us to adopt green consumption. To protect our delicate world, the Students’ Union will launch the campaign named "Green Consumption, Protect Our Delicate World".
We strongly advise everyone to choose eco-friendly products, reject extra packaging, and cut down the use of single-use plastics. Green consumption helps save energy and protect biodiversity.
Let’s take action together and build a sustainable lifestyle to guard our shared home!
Students’ Union
详细解题思路步骤
1. 审题：确定文体为倡议书，格式为称呼+正文+落款，语气正式且有号召力。
2. 结构：第一段说明背景与活动主题；第二段提出具体倡议；第三段发出号召。
3. 要点全覆盖：生态压力、绿色消费、环保产品、减少浪费、共同行动。
4. 语言：使用单元核心词汇，句式简洁流畅，符合80–100词要求。
5. 格式规范：开头称呼顶格，结尾落款右对齐。
第二节 读后续写（满分25分）
Paragraph 1:
As soon as we returned to school, we held a class meeting to discuss what we could do to help. After a long talk, we all agreed to work as volunteers at the nature reserve every weekend. We prepared tools to clean up rubbish, pull out harmful invasive species, and put up posters to tell more people about the importance of protecting the ecosystem. Many students joined us actively, and we worked happily with other volunteers. We all believed our efforts would help the reserve recover soon.
Paragraph 2:
Several months later, we visited the reserve again. We were glad to find that the lake was clear and tidy, and more native animals and plants had come back. The ecosystem was becoming better and the whole habitat was full of life. We deeply realized that everyone’s small action can make a big difference. It was so meaningful for us to do our part in protecting our delicate world.
详细解题思路步骤
1. 审题：明确续写要求，使用一般过去时，保持情节积极连贯。
2. 情节设计：第一段写班会讨论→制定志愿计划→参与保护行动；第二段写重游保护区→生态明显恢复→内心感悟。
3. 关键词使用：reserve, ecosystem, invasive species, volunteers, recover, habitat 全覆盖。
4. 逻辑衔接：使用连接词使行文流畅，情感真实，紧扣环保主题。
5. 字数控制：两段合计约150词，符合考试标准。
