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Unit 3 Sea Exploration单元训练-2025-2026学年人教版高中英语选择性必修第四册
（满分150分考试时间120分钟）
第一部分词汇知识运用（共两节，满分30分）
第一节单句语法填空（共10小题；每小题1.5分，满分15分）
在空白处填入1个适当的单词或括号内单词的正确形式。
1.In 2026,China________(extend)its deep-sea exploration to the Arctic with the help of"Exploration No.3"mother ship.
2.The submersible,________(design)and made independently by Chinese scientists,has reached the deepest point of the Mariana Trench.
3.Many coastal countries are negotiating________the sustainable development of marine resources.
4.It is of great importance________(preserve)the diversity of marine life while exploring the ocean.
5.The latest technology enables scientists________(study)deep-sea creatures in their natural environment.
6.By the end of 2025,Chinese manned submersibles________(complete)more than 1,700 dives.
7.The exploration of the ocean is not only________(science)research but also a journey of discovery.
8.Some rare sea species are at risk of________(extinct)due to overfishing and pollution.
9.The 21st Century Maritime Silk Road,________connects Asia,Europe and Africa,promotes global marine cooperation.
10.With more advanced equipment________(develop),the future of sea exploration is full of possibilities.
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。
11.The government has launched a new program to________(开发)the ocean resources without damaging the environment.
12.The________(商人)from different countries established trade routes through sea exploration centuries ago.
13.The________(舰队)of Chinese research ships has been conducting scientific surveys in the Southern Ocean.
14.Experts are using advanced technology to study the________(迁移)of marine animals.
15.The________(水下的)cameras recorded amazing scenes of deep-sea creatures.
16.The________(仁慈)to marine life is essential to maintain the balance of the ocean ecosystem.
17.The company plans to________(撤回)its exploration plans in some sensitive marine areas.
18.The________(纽带)between different countries has been strengthened through maritime cooperation.
19.There is an urgent need to set up a global________(目录)of endangered marine species.
20.The________(广泛的)research on deep-sea mining has raised concerns about environmental protection.
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、D四个选项中，选出最佳选项。
A
Explore the Blue:2026 Sustainable Marine Tourism Guide
The ocean covers more than 70%of our planet,and 2026 is the perfect time to explore its wonders responsibly.As marine tourism booms,more travelers are seeking eco-friendly experiences that protect rather than damage these precious environments.
Our carefully designed marine tours offer unique opportunities to discover the ocean's beauty.The Coral Reef Adventure takes you to the world's largest reef systems,with professional guides explaining marine biodiversity and conservation efforts.The Deep-sea Discovery trip uses semi-submersible vessels to observe unique creatures without disturbing their habitat.The Coastal Heritage Tour combines sea exploration with visits to historic fishing villages and maritime museums.
All tours follow strict green guidelines:no single-use plastics,controlled visitor numbers,and professional guides trained in environmental protection.A portion of the tour fees goes directly to marine conservation projects.
This year,join us to explore the ocean's mysteries while helping to protect its future.
21.What is the main purpose of the tourism guide
A.To introduce different marine species B.To promote sustainable marine tourism
C.To advertise advanced submersibles D.To teach people how to dive safely
22.Which tour can help visitors learn about coastal history and culture
A.The Coral Reef Adventure B.The Deep-sea Discovery
C.The Coastal Heritage Tour D.The Marine Conservation Trip
23.How do the tours support marine protection
A.By building new marine parks B.By donating part of fees to conservation
C.By limiting tours to summer months D.By training all visitors as scientists
B
Last year,I joined a volunteer marine exploration team in the South Pacific.Our mission was to help scientists study coral reefs and collect data on climate change effects.
The journey began with a two-week trip on a research vessel.Every morning,we prepared equipment and followed scientists into the water.Using special underwater cameras,we documented coral conditions and recorded fish populations.I was amazed by the colorful reefs and diverse marine life,but heartbroken to see many bleached corals.
One afternoon,we discovered a previously unknown coral colony that remained healthy despite rising temperatures.The scientists were excited,calling it a"climate-resilient reef"that could offer clues for protection.
We worked alongside local fishermen,learning traditional conservation methods.They taught us how to establish no-fishing zones and protect sea turtle nests.In return,we shared our research findings to help them manage resources sustainably.
The experience changed my perspective.I realized sea exploration is not just about discovery but also responsibility.Every individual can help protect our oceans through small actions.
24.What was the author's role in the team
A.A professional scientist B.A volunteer researcher
C.A professional diver D.A student journalist
25.What made the author feel sad during the exploration
A.The rough sea conditions B.The limited equipment
C.The bleached coral reefs D.The long working hours
26.Why were scientists excited about the new discovery
A.It was a new fish species B.It was a deep-sea mineral
C.It was a resilient coral colony D.It was a historic shipwreck
27.What did the author learn from local fishermen
A.Advanced diving skills B.Traditional conservation methods
C.Navigation techniques D.Marine biology knowledge
C
The year 2026 marks a new era in deep-sea exploration,with technological breakthroughs revolutionizing our understanding of the ocean’s depths.China’s"Fendouzhe"submersible continues to make remarkable achievements,expanding humanity’s reach to the deepest ocean areas.
One major advancement is in underwater robotics.AI-powered submersibles can now operate independently for months,collecting data and samples from extreme depths.These intelligent machines can withstand high pressure and navigate complex terrains,reaching areas previously inaccessible to humans.They are designed to be resilient in harsh environments,continuing missions even when facing minor equipment damage,which greatly improves exploration efficiency.
Another breakthrough is in marine biotechnology.Scientists are discovering unique organisms in deep-sea environments that produce compounds with medical potential.These"blue bioresources"could lead to new medicines and treatments for various diseases,offering hope for patients with currently incurable illnesses.
Advanced imaging technology allows detailed mapping of the ocean floor.High-resolution sonar systems create 3D maps revealing underwater mountains,valleys,and even ancient shipwrecks.This information helps scientists understand geological processes and plan sustainable resource development,balancing economic growth with ocean protection.
Despite these advances,challenges remain.The extreme environment damages equipment,and research costs remain high.However,international cooperation is increasing,with countries sharing technology and knowledge to unlock the ocean’s secrets responsibly.
28.What is the main advantage of AI-powered submersibles
A.They are cheaper to build B.They can operate independently
C.They are faster than manned ones D.They carry more passengers
29.What makes"blue bioresources"valuable
A.They can be used as fuel B.They have medical potential
C.They are easy to collect D.They can clean ocean pollution
30.What does the underlined word"resilient"probably mean
A.Easily damaged B.Quick to recover C.Expensive to study D.Hard to find
31.What is the main idea of the text
A.The history of deep-sea exploration
B.Technological breakthroughs in 2026 deep-sea exploration
C.The importance of marine biotechnology
D.Challenges in ocean floor mapping
D
As technology advances,sea exploration has entered a golden age.The ocean holds vast resources and scientific mysteries,but its exploration raises important questions about balance between development and protection.
Supporters of ocean development argue that marine resources are essential for human progress.With land resources decreasing,the ocean offers minerals,energy,and food that can sustain growing populations.New industries like deep-sea mining and marine biotechnology create jobs and drive economic growth.
However,environmentalists warn that unregulated exploration causes irreversible damage.Deep-sea mining disrupts ecosystems,overfishing depletes populations,and pollution threatens delicate marine environments.Once destroyed,many deep-sea ecosystems take centuries to recover.
The key lies in sustainable exploration.Modern technology allows us to study and utilize marine resources with minimal environmental impact.Strict regulations and international cooperation ensure responsible practices.The"Blue Economy"approach balances economic benefits with ecological protection.
Education also plays a crucial role.Public awareness of marine conservation has grown,leading to more responsible consumer choices.Many businesses now adopt sustainable practices,responding to consumer demand for eco-friendly products.
The ocean is humanity's shared heritage.Successful sea exploration requires wisdom,responsibility,and cooperation.Only by protecting the ocean can we ensure its benefits for future generations.
32.What is the main conflict discussed in the text
A.Between different countries' ocean claims
B.Between marine technology development
C.Between ocean development and protection
D.Between traditional and modern fishing methods
33.Why do some people support ocean development
A.It provides essential resources B.It causes no environmental damage
C.It is cheaper than land development D.It requires less advanced technology
34.What can we infer about deep-sea ecosystems
A.They recover quickly from damage B.They are more robust than surface ones
C.They are easily damaged and slow to recover D.They are not affected by human activities
35.Which of the following is the best title for the text
A.Ocean Resources:The Future of Humanity
B.Sustainable Sea Exploration:Finding Balance
C.Technological Breakthroughs in Ocean Research
D.Marine Pollution:A Global Crisis
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。
The Importance of Marine Protected Areas
Oceans are vital to life on Earth,providing oxygen,food,and climate regulation.Yet marine environments face growing threats from human activities.36.________
Marine Protected Areas(MPAs)are regions where human activities are limited to conserve marine ecosystems.37.________They protect breeding grounds,preserve biodiversity,and allow damaged ecosystems to recover.
Well-managed MPAs offer numerous benefits.Fish populations within protected areas increase significantly,eventually spilling over into surrounding fishing grounds.38.________This helps both the environment and fishing communities.
39.________Many underwater structures,like coral reefs,act as natural barriers against storms and erosion.Protecting these areas reduces coastal damage and protects human communities.
However,challenges remain.Many MPAs lack proper management and enforcement.40.________Global cooperation is essential to create a comprehensive network of protected areas that covers key marine habitats.
By working together,we can ensure these vital regions continue to support life on Earth for generations to come.
选项
A.This makes fishing more sustainable in nearby areas
B.Marine Protected Areas can also protect coastal communities
C.Some people believe MPAs limit economic development
D.These special zones help conserve vulnerable marine ecosystems
E.This makes effective protection difficult to achieve
F.Technology plays an important role in monitoring MPAs
G.Marine Protected Areas offer an effective solution
第三部分语言知识运用
第一节完形填空（15小题，每题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。
When I was young,I was deeply attracted by stories of brave explorers who risked their lives to discover the 41.________world under the waves.I often dreamed of swimming with fish and seeing amazing 42.________that few people had ever seen.Last year,my dream finally 43.________when I joined a teenage marine exploration project.
Our group spent a week on a small research ship,working with scientists to 44.________coral reefs and collect water samples.On the third day,we went diving for the first time.With masks and oxygen tanks,we slowly went under the water.The moment I looked around,my heart was filled with 45.________.Colorful fish danced among corals,and small creatures hid in dark holes.
However,not everything was beautiful.We saw white and lifeless corals,which had been 46.________by warming oceans.Plastic waste lay among the rocks,47.________the whole ecosystem.A local scientist told us that many sea creatures were at risk of 48.________if no action was taken soon.
During the trip,we helped clean the beach and 49.________information for future research.We also talked with fishermen who were trying to make a living without 50.________the ocean.They taught us that exploration must go hand in hand with 51.________.
One evening,we watched a documentary about world-famous sea explorers.Their courage and love for the ocean 52.________every one of us.I began to realize that exploring the sea was not just about excitement,but about responsibility.
Before we left,we planted small coral pieces in special areas,hoping they would grow and 53.________the reef.That trip changed my life greatly.It made me understand that the ocean is our shared treasure and we must try our best to 54.________it.Every small act 55.________,and together we can protect our blue planet.
41.A.secret B.dark C.wild D.clean
42.A.sights B.signals C.signs D.scenes
43.A.came true B.turned up C.took off D.gave in
44.A.build B.study C.sell D.open
45.A.fear B.wonder C.anger D.worry
46.A.protected B.damaged C.covered D.controlled
47.A.improving B.harming C.helping D.serving
48.A.existence B.appearance C.extinction D.movement
49.A.share B.hide C.delete D.gather
50.A.protecting B.respecting C.polluting D.observing
51.A.development B.protection C.exploration D.travel
52.A.inspired B.stopped C.confused D.disappointed
53.A.destroy B.replace C.restore D.reduce
54.A.guard B.waste C.test D.doubt
55.A.matters B.costs C.loses D.spends
第二节语篇语法填空（共10小题；每小题1.5分，满分15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。
China's marine exploration has made remarkable progress in recent years.In 2025,the country's manned submersibles 56.________(complete)more than 300 dives,57.________(mark)a new record in deep-sea research.
The"Fendouzhe"submersible,58.________can reach the Mariana Trench's 10,909-meter depth,has made 59.________(impress)achievements.It 60.________(success)collected samples from the deepest point of the ocean,providing 61.________(value)data for scientists.
New technology has made ocean exploration 62.________(safe)and more efficient.Advanced equipment allows scientists 63.________(study)deep-sea creatures in their natural environment.
China is also paying great attention 64.________marine environmental protection.Strict rules have been made 65.________(ensure)sustainable development of marine resources.
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）
66假定你是李华，你校英文报将开设"Ocean Protection"专栏，现面向全校学生征集稿件。请你写一篇短文投稿，内容包括：
1.海洋的重要性；
2.海洋面临的威胁；
3.保护海洋的建议。
注意：
1.词数80左右；
2.可适当增加细节，以使行文连贯。
第二节读后续写（满分25分）
67阅读下面短文，根据所给情节进行续写，使之构成一篇完整的短文。
Last summer vacation,I joined a summer camp focused on marine exploration.Our group spent a week by the sea,learning about ocean life and participating in conservation activities.The most unforgettable experience was our trip to a nearby coral reef.
Early one morning,we took a small boat to the reef.The sun was shining,and the water was clear blue.Our guide,a marine biologist,told us about the importance of coral reefs,which are home to thousands of sea species.
When we put on our diving equipment and went underwater,what we saw amazed us.Colorful corals in all shapes and sizes spread out before our eyes.Fish of every color swam through the coral branches.I felt like I had entered a totally different world.
However,as we swam further,we noticed something worrying.Some corals were white and broken—the signs of coral bleaching.Plastic waste was floating among the reefs,and some areas were completely dead.Our guide explained that pollution and climate change were destroying this delicate ecosystem.
We spent the next few hours carefully collecting plastic waste from the reef.We also took notes and photos to document the damage.The other campers and I felt a strong sense of responsibility to protect this beautiful place.
注意：
1.续写词数应为150左右；
2.续写部分分为两段，每段的开头语已为你写好。
Paragraph 1:
On the way back to the shore,we had a heated discussion about what we could do.
Paragraph 2:
Several months later,I received exciting news from the camp organizer.Unit 3 Sea Exploration单元训练-2025-2026学年人教版高中英语选择性必修第四册
答案及详细解析
（满分150分考试时间120分钟）
第一部分词汇知识运用（共两节，满分30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.will extend 2.designed 3.on 4.to preserve 5.to study
6.had completed 7.scientific 8.extinction 9.which 10.developed
第二节单词拼写（共10小题；每小题1.5分，满分15分）
11.develop 12.merchants 13.fleet 14.migration 15.underwater
16.mercy 17.withdraw 18.bond 19.catalogue 20.widespread
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.C 27.B 28.B 29.B 30.B
31.B 32.C 33.A 34.C 35.B
第二节七选五（共5小题；每小题2.5分，满分12.5分）
36.G 37.D 38.A 39.B 40.E
第三部分语言知识运用（共两节，满分30分）
第一节完形填空（共15小题；每小题1分，满分15分）
41.A 42.A 43.A 44.B 45.B 46.B 47.B 48.C 49.D 50.C
51.B 52.A 53.C 54.A 55.A
第二节语篇语法填空（共10小题；每小题1.5分，满分15分）
pleted 57.marking 58.which 59.impressive 60.successfully
61.valuable 62.safer 63.to study 64.to 65.to ensure
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）
参考范文
The ocean is vital to all life.It provides oxygen and food,and helps regulate the global climate.However,it is now under serious threats from pollution,overfishing and climate change.
To protect the ocean,we should say no to plastic products and choose sustainable seafood.Proper waste disposal is also important.Moreover,raising public awareness can make a big difference.
Let’s take action before it’s too late.
第二节读后续写（满分25分）
参考范文
Paragraph 1:
On the way back to the shore,we had a heated discussion about what we could do.We decided to start with small and practical actions.Some planned to make posters to call on more people to protect coral reefs.I volunteered to set up an online channel to share our experience and raise awareness.All of us hoped our efforts could help save the beautiful ocean home.
Paragraph 2:
Several months later,I received exciting news from the camp organizer.Our campaign had achieved great success.More and more volunteers joined the beach clean-up and reef protection activities.With our care,some damaged reefs began to recover.I felt so proud and realized every small action counts.Protecting the ocean is protecting our future.
详细解析
第一部分词汇知识运用（共两节，满分30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.原题：In 2026,China________(extend)its deep-sea exploration to the Arctic with the help of"Exploration No.3"mother ship.
中文：2026年，在中国“探索三号”母船的帮助下，中国将把深海探测拓展到北极。
答案：will extend
解析：句中时间状语in 2026表示将来，因此谓语动词使用一般将来时，结构为will+动词原形。
2.原题：The submersible,________(design)and made independently by Chinese scientists,has reached the deepest point of the Mariana Trench.
中文：这款由中国科学家自主设计并制造的潜水器，已经抵达马里亚纳海沟最深处。
答案：designed
解析：句子主语the submersible与design之间为被动关系，表示“被设计”，因此使用过去分词作后置定语。
3.原题：Many coastal countries are negotiating________the sustainable development of marine resources.
中文：许多沿海国家正在就海洋资源的可持续开发进行谈判。
答案：on
解析：固定搭配negotiate on sth，表示“就某事进行谈判、协商”。
4.原题：It is of great importance________(preserve)the diversity of marine life while exploring the ocean.
中文：在开发海洋的同时，保护海洋生物的多样性是至关重要的。
答案：to preserve
解析：固定句型It is of great importance to do sth，表示“做某事是非常重要的”，it为形式主语，真正主语是不定式。
5.原题：The latest technology enables scientists________(study)deep-sea creatures in their natural environment.
中文：最新的技术使科学家们能够在自然环境中研究深海生物。
答案：to study
解析：固定搭配enable sb.to do sth.，表示“使某人能够做某事”。
6.原题：By the end of 2025,Chinese manned submersibles________(complete)more than 1,700 dives.
中文：到2025年底，中国载人潜水器已经完成了1700多次下潜。
答案：had completed
解析：by the end of+过去时间，句子必须使用过去完成时，表示“截止到过去某一时间已经完成的动作”。
7.原题：The exploration of the ocean is not only________(science)research but also a journey of discovery.
中文：海洋探索不仅是一项科学研究，也是一场发现之旅。
答案：scientific
解析：修饰名词research需要用形容词，science的形容词形式为scientific，表示“科学的”。
8.原题：Some rare sea species are at risk of________(extinct)due to overfishing and pollution.
中文：由于过度捕捞和污染，一些稀有海洋物种面临灭绝的危险。
答案：extinction
解析：介词of后面需要接名词，extinct为形容词，其名词形式为extinction，表示“灭绝”。
9.原题：The 21st Century Maritime Silk Road,________connects Asia,Europe and Africa,promotes global marine cooperation.
中文：连接亚、欧、非三大洲的21世纪海上丝绸之路，促进了全球海洋合作。
答案：which
解析：此处为非限制性定语从句，先行词为物，关系代词用which，不能用that。
10.原题：With more advanced equipment________(develop),the future of sea exploration is full of possibilities.
中文：随着更先进的设备被研发出来，海洋探索的未来充满了可能。
答案：developed
解析：with复合结构，equipment与develop为被动关系，表示“被研发”，因此用过去分词作宾补。
第二节单词拼写（共10小题；每小题1.5分，满分15分）
11.原题：The government has launched a new program to________(开发)the ocean resources without damaging the environment.
中文：政府已经启动了一个新项目，在不破坏环境的前提下开发海洋资源。
答案：develop
12.原题：The________(商人)from different countries established trade routes through sea exploration centuries ago.
中文：数百年前，来自不同国家的商人通过海洋探索建立了贸易路线。
答案：merchants
13.原题：The________(舰队)of Chinese research ships has been conducting scientific surveys in the Southern Ocean.
中文：中国科考船舰队一直在南大洋进行科学考察。
答案：fleet
14.原题：Experts are using advanced technology to study the________(迁移)of marine animals.
中文：专家们正在使用先进技术研究海洋动物的迁徙。
答案：migration
15.原题：The________(水下的)cameras recorded amazing scenes of deep-sea creatures.
中文：水下摄像机记录下了深海生物令人惊叹的画面。
答案：underwater
16.原题：The________(仁慈)to marine life is essential to maintain the balance of the ocean ecosystem.
中文：对海洋生物的仁慈对于维持海洋生态平衡至关重要。
答案：mercy
17.原题：The company plans to________(撤回)its exploration plans in some sensitive marine areas.
中文：该公司计划撤回在一些敏感海洋区域的开发方案。
答案：withdraw
18.原题：The________(纽带)between different countries has been strengthened through maritime cooperation.
中文：通过海洋合作，各国之间的纽带得到了加强。
答案：bond
19.原题：There is an urgent need to set up a global________(目录)of endangered marine species.
中文：迫切需要建立一个全球濒危海洋物种目录。
答案：catalogue
20.原题：The________(广泛的)research on deep-sea mining has raised concerns about environmental protection.
中文：关于深海采矿的广泛研究引发了人们对环境保护的担忧。
答案：widespread
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）
A篇应用文
语篇解读：本文是一篇海洋旅游推广类应用文，文章围绕“负责任、可持续的海洋旅游”展开，介绍了三条特色生态旅游路线，并明确提出环保规则：禁止一次性塑料、控制游客数量、部分费用用于海洋保护项目。全文结构清晰，语言简洁，旨在倡导绿色旅游，保护海洋生态，属于高考高频应用文阅读类型。
21.答案：B
题型：主旨大意题
定位原文：全文围绕sustainable marine tourism展开
解析：文章标题与首段直接点明核心目的，即推广可持续、环保型海洋旅游，因此B选项正确。
22.答案：C
题型：细节理解题
定位原文：第二段The Coastal Heritage Tour combines sea exploration with visits to historic fishing villages and maritime museums.（海岸遗产之旅将海洋探索与参观历史渔村和海洋博物馆结合起来。）
解析：题干要求了解历史文化，对应Coastal Heritage Tour，故选C。
23.答案：B
题型：细节理解题
定位原文：第三段A portion of the tour fees goes directly to marine conservation projects.（一部分旅游费用直接用于海洋保护项目。）
解析：旅游项目通过捐赠部分收入支持海洋保护，因此B正确。
B篇记叙文
语篇解读：本文是一篇个人经历类记叙文，讲述作者作为志愿者参与南太平洋海洋科考活动的经历。文章记录了珊瑚白化现象、发现抗气候退化珊瑚群、与当地渔民学习传统保护法等情节，最终升华主题：海洋探索不仅是发现，更是责任。文章情感真挚，主题积极，符合高考阅读命题趋势。
24.答案：B
题型：细节理解题
定位原文：第一段I joined a volunteer marine exploration team in the South Pacific.（我加入了南太平洋的一个海洋探索志愿团队。）
解析：作者身份是志愿者研究员，故选B。
25.答案：C
题型：细节理解题
定位原文：第二段…but heartbroken to see many bleached corals.（但是看到许多白化珊瑚，我感到心碎。）
解析：白化的珊瑚让作者感到难过，故选C。
26.答案：C
题型：细节理解题
定位原文：第三段…a climate-resilient reef that could offer clues for protection.（一个抗气候破坏的珊瑚礁，可以为保护工作提供线索。）
解析：科学家兴奋是因为发现了具有强适应力的珊瑚群，故选C。
27.答案：B
题型：细节理解题
定位原文：第四段We worked alongside local fishermen,learning traditional conservation methods.（我们和当地渔民一起工作，学习传统的保护方法。）
解析：作者从渔民那里学到传统保护方式，故选B。
C篇说明文
语篇解读：本文是一篇科技类说明文，以2026年为时间背景，介绍深海探索领域三大技术突破：AI智能潜水器、海洋生物技术、高精度成像测绘技术。文章分别说明各项技术的功能、优势与价值，并客观指出成本高、设备易损等挑战，最后强调国际合作的重要性。文章结构严谨，信息密度高，是典型的高考科技说明文。
28.答案：B
题型：细节理解题
定位原文：第二段AI-powered submersibles can now operate independently for months…（人工智能潜水器现在可以独立运行数月……）
解析：AI潜水器最核心的优势是能够独立运行，无需人工实时操控，故选B。
29.答案：B
题型：细节理解题
定位原文：第三段…compounds with medical potential…（具有医学潜力的化合物）
解析：蓝色生物资源的价值在于可用于研发新药、治疗疾病，故选B。
30.答案：B
题型：词义猜测题
定位原文：第二段…continuing missions even when facing minor equipment damage…（即使遇到轻微设备损坏仍能继续执行任务）
解析：由上下文可推断resilient表示“适应力强的、能快速恢复的”，对应quick to recover。
31.答案：B
题型：主旨大意题
解析：全文围绕2026年深海探索的技术革新展开，分别介绍机器人、生物、成像三大突破，因此B最能概括全文。
D篇议论文
语篇解读：本文是一篇典型社会议题议论文，围绕“海洋开发与生态保护”的矛盾展开论述。文章先呈现支持者与环保主义者两方对立观点，随后提出作者立场：平衡才是关键，应走可持续探索道路。文章结构清晰，逻辑严谨，体现“经济—生态”双赢理念，是高考高频议论文主题。
32.答案：C
题型：细节理解题
定位原文：第一段…balance between development and protection.（开发与保护之间的平衡）
解析：文章讨论的核心冲突是海洋开发与生态保护之间的矛盾，故选C。
33.答案：A
题型：细节理解题
定位原文：第二段…marine resources are essential for human progress.（海洋资源对人类发展至关重要）
解析：支持者认为海洋能提供紧缺资源、促进经济，故选A。
34.答案：C
题型：推理判断题
定位原文：第三段Once destroyed,many deep-sea ecosystems take centuries to recover.（一旦被破坏，许多深海生态系统需要数百年才能恢复）
解析：可推断深海生态脆弱、易受损且恢复极慢，故选C。
35.答案：B
题型：最佳标题题
解析：全文强调在开发与保护之间寻找平衡，走可持续海洋探索之路，因此B最适合作为标题。
第二节七选五：（共5小题；每小题2.5分，满分12.5分）
语篇解读：本文为环保类说明文，围绕海洋保护区（MPAs）展开，介绍其定义、功能、多重生态与经济价值，同时指出现存管理不足、执行不到位等问题，呼吁全球合作。文章层次分明，句间逻辑清晰，是高考七选五常考主题。
36.答案：G
解析：前文提出海洋面临威胁，空格需要一句承上启下的句子，G“海洋保护区提供了一种有效的解决方案”符合逻辑。
37.答案：D
解析：前句介绍MPA定义，后句说明具体作用，D“这些特殊区域有助于保护脆弱海洋生态”承接上下文。
38.答案：A
解析：前句提到保护区内鱼类增加，会扩散到周边海域，A“这使附近区域的渔业更可持续”符合因果逻辑。
39.答案：B
解析：后句提到珊瑚礁可防风暴、保护海岸，B“海洋保护区也能保护沿海社区”准确概括本段内容。
40.答案：E
解析：前句提到许多MPA缺乏管理和执行，E“这使得有效保护难以实现”是顺承结果。
第三部分语言知识运用（共两节，满分30分）
第一节完形填空（共15小题；每小题1分，满分15分）
语篇解读：本文是一篇成长感悟类记叙文，讲述作者从小痴迷海洋探索，长大后参加青少年海洋科考项目的经历。文中既描绘了海底的神奇美景，也展现了珊瑚白化、塑料污染等残酷现实，最终作者领悟到：探索的意义不仅是好奇与刺激，更在于责任与守护。文章情感真挚，主题鲜明，是高考完形填空高频文本。
41.答案：A
选项：A.secret（秘密的）B.dark（黑暗的）C.wild（野生的）D.clean（干净的）
解析：句意为“探索海浪之下秘密的世界”，secret最符合“未知、神秘”的语境。
42.答案：A
选项：A.sights（景象）B.signals（信号）C.signs（标志）D.scenes（场景）
解析：sight表示“自然风光、景象”，尤指难得一见的美景，符合海底奇观的描述。
43.答案：A
选项：A.came true（实现）B.turned up（出现）C.took off（起飞）D.gave in（屈服）
解析：dream came true为固定搭配，表示“梦想成真”。
44.答案：B
选项：A.build（建造）B.study（研究）C.sell（卖）D.open（打开）
解析：与科学家一起工作，目的是研究珊瑚礁、收集水样，故选study。
45.答案：B
选项：A.fear（恐惧）B.wonder（惊叹）C.anger（愤怒）D.worry（担忧）
解析：第一次看到五彩斑斓的海底世界，内心充满惊叹与震撼，故选wonder。
46.答案：B
选项：A.protected（保护）B.damaged（破坏）C.covered（覆盖）D.controlled（控制）
解析：白色无生命的珊瑚是被海洋变暖破坏的，故选damaged。
47.答案：B
选项：A.improving（改善）B.harming（危害）C.helping（帮助）D.serving（服务）
解析：塑料垃圾危害整个生态系统，故选harming。
48.答案：C
选项：A.existence（存在）B.appearance（出现）C.extinction（灭绝）D.movement（移动）
解析：at risk of extinction表示“濒临灭绝”，为固定搭配。
49.答案：D
选项：A.share（分享）B.hide（隐藏）C.delete（删除）D.gather（收集）
解析：科考活动需要收集信息用于未来研究，故选gather。
50.答案：C
选项：A.protecting（保护）B.respecting（尊重）C.polluting（污染）D.observing（观察）
解析：渔民以不污染海洋的方式谋生，故选polluting。
51.答案：B
选项：A.development（发展）B.protection（保护）C.exploration（探索）D.travel（旅行）
解析：文章主题强调探索必须与保护并行，go hand in hand with protection。
52.答案：A
选项：A.inspired（激励）B.stopped（阻止）C.confused（困惑）D.disappointed（失望）
解析：航海家的勇气与热爱激励了每一个人，故选inspired。
53.答案：C
选项：A.destroy（破坏）B.replace（替换）C.restore（恢复）D.reduce（减少）
解析：种植珊瑚碎片是希望它们生长并恢复珊瑚礁，restore表示“恢复、修复”。
54.答案：A
选项：A.guard（守护）B.waste（浪费）C.test（测试）D.doubt（怀疑）
解析：海洋是共同财富，我们必须尽全力守护它，guard表示“守护、保卫”。
55.答案：A
选项：A.matters（重要）B.costs（花费）C.loses（失去）D.spends（度过）
解析：every small act matters表示“每一个小行动都很重要”，为高频地道表达。
第二节语篇语法填空（共10小题；每小题1.5分，满分15分）
语篇解读：本文是一篇介绍中国深海探测成就的说明文，简要说明“奋斗者”号深潜成果、技术进步与中国对海洋生态保护的重视，语言正式，考点全面，覆盖时态、非谓语、从句、形容词、副词、比较级、固定搭配等高考核心语法点。
pleted：一般过去时，描述过去发生的动作。
57.marking：现在分词作结果状语，表示自然而然的结果。
58.which：非限制性定语从句，指代事物。
59.impressive：形容词修饰名词achievements，表示“令人赞叹的”。
60.successfully：副词修饰动词collected，表示“成功地”。
61.valuable：形容词修饰data，表示“有价值的”。
62.safer：and连接并列比较级，与more efficient对应。
63.to study：固定搭配allow sb.to do sth。
64.to：固定搭配pay attention to。
65.to ensure：不定式作目的状语，表示“为了确保”。
第四部分写作超详细解题思路
第一节应用文写作（满分15分）
审题
文体：英文报刊短文
主题：Ocean Protection
要点：①海洋的重要性②海洋面临的威胁③保护建议
字数：80词左右
写作步骤
1.开头：开门见山，点明海洋的重要性（氧气、食物、气候调节）。
2.主体：列举威胁（污染、过度捕捞、气候变化），使用however转折。
3.建议：给出3条具体可行建议（拒绝塑料、可持续海鲜、提高意识）。
4.结尾：简洁呼吁，升华主题。
5.检查：要点齐全、语法正确、衔接自然、字数达标。
第二节读后续写（满分25分）
审题
前文情节：参观珊瑚礁，发现白化与污染，参与清理垃圾。
续写方向：返程讨论行动→数月后收到成果反馈。
风格：积极、正能量、环保主题。
写作步骤
1.第一段：写返程讨论具体行动（制作海报、线上宣传、分享经验），突出团队决心。
2.第二段：写活动取得成效，更多人参与，珊瑚开始恢复，升华主题：小行动有大意义。
3.语言：多用动作描写、心理描写，保持原文温馨、负责的基调。
4.检查：情节连贯、逻辑合理、无语法错误、字数符合要求。

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