Unit 2 Animals（A部分）-2026-2027学年高中英语教材全解必修二（沪外版）

Unit 2 Animals 教材全解(A部分) cruel debate establishment welfare concern argue 。单元核心词汇 remove habitat cage hunt illegal extinct moreover; attempt material exhibition typically ⊙单元同步语法 限定性定语从句"介词+which'的用法 。单元文章对话 重点句型讲练 教材同步词汇全解全练 重点1 单元词汇 1.cuel/ku:al/adj.残酷的；冷酷的；残忍的；残暴的 词形变化：cruelly(adv.）残酷地；cruelty(n.)残忍；残酷 搭配：be cruel to sb.对某人残忍；cruel treatment残忍对待 辨析：cuel强调主观恶意造成的痛苦；而severe指严格或严厉，不一定有恶意。 It is cruel to keep animals in small cages. 2.debate/dr'bert/v.(尤指正式)讨论，辩论；n.争论，辩论 词形变化：debater(n.)辩论者；debatable(adj.)有争议的 搭配：debate on/,over sth.就…辩论；under debate正在讨论中 辨析：debate常指正式、有组织的辩论；argue更侧重争吵或说理。 There is a heated debate about whether zoos should be closed. 3.argue/'a:gju:/v.论证；说理；争辩；争吵 词形变化：argument(m.）争论；论点；argumentative(adj.)好争论的 搭配：argue with sb.about//over sth.与某人争论某事；argue for/,against支持/反对 辨析：argue强调用理由反驳；quarrel侧重情感上的争吵。 Many people argue that zoos can help protect endangered species. 4.illegal /I'li:gl/adj.违法的；非法的 词形变化：illegally(adv.)非法地；illegality(n.)违法（行为） 反义词：legal(adj.）合法的 搭配：illegal hunting非法狩猎；illegal activities非法活动 辨析：illegal指违反法律；unlawful同义但更正式；criminal指构成犯罪。 It is illegal to hunt endangered animals 5.extinct/rk'stmkt/adi.(物种)灭绝的；（火山)不再活跃的 词形变化：extinction(n.)灭绝；消亡 搭配：become extinct灭绝；go extinct走向灭绝 辨析：extinct指整个物种消失；endangered指濒危。 Many species are in danger of becoming extinct. 6.moreover/mox'euve(r)/adv.此外；而且 同义词：furthermore,in addition,besides 用法：常放在句首，起递进作用，后接完整句子。 注意：moreover比besides更正式。 Zoos provide education for visitors.Moreover,they support conservation efforts. 7.attempt/e'tempt/v.努力；尝试；试图；n.企图；试图 词形变化：attempted(adj.)未遂的（如attempted murder) 搭配：attempt to do sth.尝试做某事；make an attempt to do企图做. 辨析：attempt比ty更正式，强调付出努力；ty更口语化。 Scientists are attempting to replicate the natural habitat of the animals. 8.adjust/.d3Ast/v.适应；习惯；调整；调节 词形变化：adjustment(n.)调整；adjustable(adj.)可调节的 搭配：adjust to(doing)sth.适应（做）某事；adjust oneself to使自己适应 辨析：adapt侧重改变以适应新环境；adjust侧重微调。 Animals in zoos need time to adjust to their new environment 9.essential /I'sen/adi.极其重要的；必要的；必不可少的 词形变化：essentially(adv.)本质上；essence(n.)本质；精髓 搭配：be essential to/for sth.对…至关重要；it is essential that..(should)do… …是必要的（虚拟语气) 辨析：essential强调必不可少；necessary更常用；vital语气更强。 Biodiversity is essential for the health of our planet. 10.threat/ret/n.威胁的人/事物；威胁；恐吓 词形变化：threaten(W.)威胁；threatening(adj.)威胁的；有危险的 搭配：pose a threat to对…构成威胁；under threat受到威胁 辨析：threat强调潜在的危害；danger更泛指危险。 Habitat loss is the biggest threat to wildlife. 1l.conservation/kpnsa'vern/n.(对自然环境的)保护 词形变化：conserve(v.)保存；节约；conservative(adj.)保守的 搭配：wildlife conservation野生动物保护；conservation area保护区 辨析：conservation强调对资源的合理利用和保护；preservation强调保持原样不改 变。 Zoos play an important role in wildlife conservation. l2.approach/'prautfyn.(待人接物或思考问题的)方式，方法；v.接近；处理 词形变化：approachable(adj.)可接近的；友善的 搭配：an approach to(doing)sth.…的方法/途径；approach a problem处理问题 辨析：method强调具体步骤；way最通用；approach强调思路或角度。 A new approach to animal welfare is being discussed. 考点通关 单元词汇 (一)单句填空（用所给词的适当形式填空） 1.Itis (cruel)to keep wild animals in small cages without enough food. 2.The students will (debate)whether zoos should be banned. 3.Many scientists (argue)that climate change is caused by human activities. 4. (illegal)hunting has led to the decline of many species 5.If we don't take action,many animals will become (extinct)in the near future. 6.Zoos provide education for visitors; (moreover),they help protect endangered species. 7.The government made an (attempt)to reduce pollution,but it didn't work well. 8.It takes time for animals to (adjust)to a new habitat. 9.Clean water is (essence)for all living things. 10.The destruction of forests poses a serious (threat)to wildlife. (二)短文填空 Many people 1. that zoos are 2. to animals.However,others 3. that zoos play a key role in 4. For example,5. hunting and habitat loss are the biggest 6. to wildlife.Zoos can help protect endangered species from becoming 7. 8. , they provide education and raise public awareness.But we need a new 9. to animal welfare,such as creating larger and more natural enclosures.It is 10. for zoos to focus on animal well-being. 1.cruel;2.debate;3.argue;4.illegal;5.extinct;6.moreover;7.attempt;8.adjust, (一)单句填空 9.essential;10.threat 1.argue;2.cruel;3.debate;4.conservation;5.illegal;6.threats;7.extinct; (二)短文填空 8.Moreover;9.approach;10.essential 教材同步语法全解全练 重点1 限定性定语从句"介词+which” 限定性定语从句"介词+which"的用法 项目 内容 “介词+which”引导的定语从句，用于修饰一个表示事物、地点、时 定义 间、原因等名词（先行词)，其中wich指代先行词，介词与从句中的动 词、形容词或先行词本身形成搭配关系，在从句中充当状语。 结构 先行词+介词+wich+定语从句其余部分 核心用法 ①当定语从句中的谓语动词与某个介词固定搭配时，可将介词置于 which之前。 ★例句：This is the book for which I paid50yuan.(原句：I paid50yuan for the book.) ②当先行词表示时间、地点、原因、方式等，且从句需要介词时，可使 用“介词+which替代关系副词。 时间：in/on/at+which=when I still remember the day on which we met, 地点：in/on/at+which=where This is the house in which Lu Xun once lived. 原因：for which=why I don't know the reason for which he left. 方式：in which=省略关系词或that The way in which he solved the problem is clever. ③介词的选择规则：根据从句中动词的固定搭配；根据先行词与介词的 常用关系；根据句意表达。 ④注意事项：“介词+which”只能用于指物，指人用“介词+whom”;介 词可放在which之前或从句末尾；关系副词不能直接放在介词之后。 >in which（在…里面以…方式) on which（在…上面/在…时候) >at which(在…地点/在…时刻) for which（为了…/因为…) 高频搭配举例 ith which（用…/和…一起〉 about which(关于…) >from which（从…) of which (…的) 考点通关 限定性定语从句"介词+which” 语法专练一：单项选择(8题) 1.The factory my father works is very large. A.which B.on which C.in which D.in that 2.Do you still remember the day we visited the museum? A.on which B.in which C.at which D.which 3.The reason he was late was that he missed the bus A.for which B.in which C.with which D.of which 4.There is a tall tree the house is built. A.in front of which B.in the front of C.in front that D.in front of that which 5.The pen he wrote the letter is made in China. A.with which B.by which C.through which D.of which 6.The story he is proud was written by himself. A.of which B.about which C.from which D.for which 7.This is the park we often play football. A.which B.where C.on which D.in that 8.The way he solved the problem surprised everyone. A.in which B.which C.by that D.for which 语法专练二：语法填空(10题) 用适当的“介词+which”填空（每空一个短语，如in which,on which等）。 1.I will never forget the day I won the first prize. 2.This is the library we can borrow books 3.The reason he refused the offer is still unknown. 4.The speed light travels is 300,000 km per second. 5.There is a small village the river flows. 6.The topic we are talking is very interesting. 7.The tool he fixed the machine is missing. 8.The house the famous writer once lived is now a museum. 9.The year 2020, the pandemic broke out,changed the world. 10.The problem we are discussing needs to be solved immediately. 参考答案 语法专练一：单项选择 1.C;2.A;3.A;4.A;5.A;6.A;7.C;8.A 1.on which;2.in which from which;3.for which;4.at 语法专练二：语法填空 which;5.through which /beside which;6.about which; 7.with which;8.in which;9.in which;10.about which 教材同步文章句型精讲 重点句型 定语从句与状语从句 Zoos,which have existed for centuries,are places where animals are kept for public display and conservation,sparking a debate that has divided animal lovers for decades. 结构：主句+，which+从句， 中文：动物园，已经存在了几个世纪，是动物被关起来供公众展示和保护的地方，引 发了一场几十年来分裂动物爱好者的辩论。 用法：非限制性定语从句对先行词进行补充说明，去掉后主句意思仍然完整。 注意：只能用which(指物)或who(指人)，不能用that。 2.are places where animals are kept for public display and conservation,sparking a debate that has divided animal lovers for decades. 结构：先行词+were/that+从句 中文：是动物被关起来供公众展示和保护的地方，引发了一场几十年来分裂动物爱好 者的辩论。 用法：whee用于先行词表示地点，在从句中作地点状语；that用于指人或物，在从句 中作主语或宾语。 3.others believe that they provide a safe haven for endangered species for which the wild is no longer a viable home 结构：先行词+介词+which+从句 中文：其他人认为它们为濒危物种提供了一个安全的庇护所，对它们来说野外不再是 可行的家园。 用法：当从句中的动词需要搭配介词时，可将介词置于wch之前，只用于指物。 4. Although some argue that zoos are cruel,others believe that they provide a safe haven... 结构：A1 though+从句，主句 中文：虽然一些人认为动物园很残忍，但其他人认为它们提供了一个安全的庇护 所… 用法：表示“虽然…但是…”，although和but不能同时使用。 5.Zoos...are places where animals are kept...,sparking a debate that has divided animal overs for decades. 结构：主句，+doing(表示主句动作带来的自然结果) 中文：动物园…是动物被关押的地方…，引发了一场几十年来分裂动物爱好者的 辩论。 用法：现在分词短语作结果状语，表示主句动作产生的结果，逻辑主语是主句的主 语。 6.or are we protecting them for the future when their natural habitats may disappear? 结构：先行词（表示时间)+when+从句 中文：或者我们是为了未来保护它们，到那时它们的自然栖息地可能会消失？ 用法：when在从句中作时间状语，代替先行词（如time,future,day）。 7.The author explains that the best zoos are those where animals are treated with respect.. 结构：those+定语从句(where/that/who等) 中文：作者解释说最好的动物园是那些动物受到尊重的动物园… 用法：thos指代前面提到的一类事物，后接定语从句进一步描述。 考点通关 文章句型 练习一：完成句子（用所给词的适当形式填空) 1.Z00s, (exist)for centuries,are now focusing on conservation. 2.The park is a place children can learn about animals. (用关系词填空) 3. (although)it is expensive,many people still visit the z0o.(改为同义句) 4.The hurricane destroyed the village, (leave)hundreds homeless. 5.We should fight the protection of endangered animals (填介词) 6.The zoo tries (mimic)the natural habitats of animals. 7.I remember the moment the baby panda was born. 关系词填空) 8.The teacher recommended that every student (visit) the zoo. 9.She is used to (get)up early to feed the animals. 10.The animals are kept in the zoo receive good care. (用定语从句改写) 练习二：翻译句子（在横线上写出完整句子） 1.动物园，已经存在了几个世纪，仍然是争论的话题。 2.这是一个动物被尊重对待的地方。 3.虽然一些人认为动物园很残忍，但其他人认为它们为濒危物种提供了安全的庇护所。 4.动物园的建造引发了一场持续数年的辩论。 5.我们必须为未来而保护动物，到那时它们的自然栖息地可能消失。 6.最好的动物园是那些模仿动物自然家园的动物园。 7.支持有道德的动物园有助于确保后代仍能看到那些可能灭绝的动物。 8.这是一个值得我们为之奋斗的目标。 9.我永远不会忘记我第一次看到老虎的那一天。 10.他在动物园工作了很多年，解释了现代动物园的不同之处。 参考答案 1.which have existed;2.where;3.Although;4.leaving;5.for; 练习一：完成句子 6.to mimic;7.when;8.(should)visit;9.getting;10.that/which 练习二：翻译句子 1.Zoos,which have existed for centuries,are still a topic of debate.;2.This is a place where animals are treated with respect.;3.Although some people think zoos are cruel,others believe they provide a safe haven for endangered species.;4.The construction of the zoo sparked a debate that has lasted for several years.;5.We must protect animals for the future when their natural habitats may disappear.;6.The best zoos are those that mimic animals'natural homes.;7.Supporting ethical zoos helps ensure that future generations will still be able to see animals that might otherwise become extinct.8.This is a goal which is worth fighting for.;9.I will never forget the day when I first saw a tiger.10.He,who has worked in the zoo for many years, explained the differences of modern zoos 教材同步单元练习 一、阅读理解 Passage 1 In recent years,the debate over the role of zoos has intensified.Supporters argue that modern zoos play a crucial role in conservation,education,and research.They point to successful breeding programs that have saved species like the California condor and the Arabian oryx from extinction.Moreover,zoos provide a unique opportunity for the public to connect with animals,fostering a sense of responsibility toward wildlife protection. However,critics contend that keeping animals in captivity is inherently cruel,no matter how well- designed the enclosures are.They argue that even the best zoos cannot fully replicate the complex social structures,vast teritories,and natural stimuli that wild animals require.Instead,they advocate for alternative approaches such as eco-tourism,wildlife sanctuaries,and in-situ conservation,which allow animals to remain in their natural habitats while still benefiting from human protection. A recent study published in Conservation Biology examined the welfare of elephants in 30 accredited zoos across Europe.Researchers found that many elephants exhibited stereotypic behaviors-repetitive, seemingly purposeless movements-indicative of psychological distress.The study also noted that the average lifespan of zoo elephants was significantly shorter than that of their wild counterparts.Such findings have fueled the call for a complete overhaul of how we house large,intelligent animals. Despite these concems,many conservationists argue that zoos are necessary as "arks"for species facing imminent extinction due to habitat loss,poaching,and climate change.They point to the example of the black-footed ferret,which was declared extinct in the wild in 1987 but has been reintroduced to several sites thanks to a captive breeding program.Without zoos,they claim,dozens of species would have already disappeared forever. The key,perhaps,lies in how zoos are managed.Ethical zoos prioritize animal welfare,provide spacious and enriched environments,and focus on conservation and education rather than entertainment.They also participate in international breeding programs and support field conservation projects.As the author of Zoo Ethics notes,"The question is not whether zoos should exist,but what kind of zoos we should have.” ()1.What is the main pupose of the first paragraph? A.To introduce the debate over zoos. B.To list the benefits of modern zoos. C.To criticize the way zoos are run. D.To explain the concept of conservation. ()2.The word "stereotypic"in paragraph 3 is closest in meaning to A.natural B.repetitive C.dangerous D.unusual ()3.Why does the author mention the black-footed ferret? A.To show that captive breeding can save species B.To argue that zoos are harmful to animals C.To compare it with the California condor. D.To illustrate the problem of extinction. ()4.What is the author's attitude toward zoos? A.Strongly opposed. B.Completely supportive C.Balanced and conditional. D.Indifferent. ()5.Which of the following would the author most likely agree with? A.All zoos should be closed immediately. B.Only large animals should be kept in zoos C.The quality of zoos matters more than their existence. D.Eco-tourism is a better altemative to zoos. Passage 2 The rapid decline of global biodiversity has prompted scientists to explore innovative conservation strategies.One such approach is"rewilding"the large-scale restoration of ecosystems to their natural state,often through the reintroduction of keystone species that have been lost.Rewilding efforts have gained traction in Europe,where wolves,bison,and beavers have been successfully reintroduced,leading to a cascade of ecological benefits. However,rewilding is not without controversy.Farmers and local communities often oppose the retumn of predators,fearing attacks on livestock.In the Netherlands,a rewilding project in the Oostvaardersplassen nature reserve sparked heated debate when large herbivores starved during harsh winters.Critics argue that rewilding oversimplifies complex ecosystems and can cause unintended harm. Another innovative method is the use of"de-extinction"technology-attempts to bring back extinct species through genetic engineering.Companies like Colossal Biosciences are working to revive the woolly mammoth,the thylacine (Tasmanian tiger),and the dodo.Proponents claim that these efforts could restore lost ecological functions and even help combat climate change.For example,reintroducing mammoths to the Arctic tundra might slow permafrost thaw by trampling snow and promoting grass growth. Yet de-extinction raises profound ethical and practical questions.Is it night to resurrect a species when its original habitat no longer exists?Could these "proxy"species harm existing ecosystems?And should enormous resources be spent on de-extinction when countless living species are on the brink of extinction?Many conservationists argue that the priority must be to protect currently endangered species and their habitats,rather than chasing futuristic projects. Amid these debates,a growing consensus emphasizes the importance of community-based conservation. In Namibia,for instance,communal conservancies have empowered local people to manage wildlife on their own land,leading to a dramatic recovery ofelephant,lion,and rhino populations.By aligning economic incentives with conservation goals,these projects have proven more sustainable than top-down approaches.As one researcher puts it,The future of conservation lies not in high-tech labs or remote reserves,but in the hands of the people who share the land with wildlife." ()1.What is the main idea of the passage? A.Rewilding is the most effective conservation method. B.De-extinction technology should be widely adopted. C.Various innovative approaches to conservation have both advantages and challenges. D.Community-based conservation is superior to all other methods. ()2.Which of the following is a challenge faced by rewilding projects? A.Lack of funding B.Opposition from local communities. C.Difficulty in breeding animals D.Climate change. ()3.The example of Namibia is used to illustrate A.the success of de-extinction B.the failure of traditional conservation C.the effectiveness of community-based conservation D.the controversy over rewilding ()4.What can be inferred about the author's view on de-extinction? A.It is a promising solution B.It is too risky to be considered. C.It raises serious concerns that need careful consideration D.It should replace traditional conservation efforts ()5.The word"aligning"in the last paragraph is closest in meaning to A.comparing B.combini山ng C.opposing D.separating 二、完形填空 The pangolin is one of the most trafficked mammals in the world.Its scales are used in traditional medicine,and its meat is considered a delicacy in some countries.Despite being protected by interational law,these gentle creatures continue to be poached at an alarming rate.Conservationists are now making a desperate (1) to save them from extinction One major obstacle is that pangolins are extremely difficult to breed in captivity.They have a highly specialized diet of ants and termites,and their immune systems are(2) to stress.Many rescued pangolins die within weeks of being brought to shelters."It is (3) to keep them in small enclosures,"says Dr.Li,a wildlife vet.They need space and a (4) environment that mimics their natural habitat." To address this,a team of researchers has developed a new approach.They are using tracking devices to monitor released pangolins and adjusting their care based on real-time data.(5) they are working with local communities to reduce poaching."Education is(6) for long-term success," Dr.Li says."Ifpeople understand the(7) that pangolins face,they may stop buying their scales.” The illegal wildlife trade is a serious (8) to many species,not just pangolins.(9) the intemnational community has strengthened laws and increased cooperation.However,some argue that these efforts are not enough."We need a more (10) approach,"says Professor Wang "Protecting animals is not just about punishing criminals,it's about addressing the root causes of poverty and lack of opportunity." Despite the challenges,there is hope.In the past five years,several pangolin(11) areas have been established in Asia,and the number of successful releases has increased.The key is to ensure that these animals can(12) to their new environment and survive in the wild. 1.A.attempt B.debate C.argument D.threat 2.A.essential B.sensitive C.cruel D.illegal 3.A.cruel B.essential C.illegal D.extinct 4.A.cruel B.artificial C.natural D.extinct 5.A.Moreover B.However C.Therefore D.Otherwise 6.A.essential B.illegal C.extinct D.crucial 7.A.threat B.approach C.debate D.attempt 8.A.threat B.approach C.conservation D.extinction 9.A.Moreover B.However C.Therefore D.Otherwise 10.A.comprehensive B.conservative C.illegal D.extinct 11.A.conservation B.debate C.argument D.threat 12.A.adjust B.attempt C.argue D.debate 三、阅读短文回答问题 Read the following passage and answer the questions in complete sentences Human activities have dramatically altered the natural habitats of countless animal species.Deforestation for agriculture,urbanization,and mining has fragmented forests,leaving animals isolated in small patches of land.In the Amazon rainforest,for instance,the construction of roads and dams has cut through the heart of the jungle,creating barriers that prevent animals from migrating,finding mates,or accessing food sources Climate change compounds these problems.Rising temperatures force species to shift their ranges toward the poles or higher elevations.However,when their path is blocked by cities or farmland,they may not be able to move fast enough to survive.A study published in Nature Climate Change found that more than half of all land species could lose at least half of their current range by 2080 if emissions continue unabated. Another major threat is the introduction of invasive species.When humans transport plants and animals across continents-intentionally or accidentally-they can disrupt local ecosystems.In Australia,feral cats and foxes have driven many native mammals to extinction.Similarly,the brown tree snake, accidentally introduced to Guam,has wiped out most of the island's native bird species. Conservation biologists emphasize that protecting habitats is the most effective way to save species. National parks and wildlife reserves can serve as refuges,but they must be large enough and connected by coridors to allow for movement.In addition,sticter regulations on land use and pollution are needed Some countries have begun to implement"green infrastructure"projects,such as elevated highways for wildlife crossings,which have shown promising results. However,individual actions also matter.Reducing consumption of products that contibute to deforestation,such as palm oil and beef,can lessen the pressure on habitats.Supporting conservation organizations and advocating for stronger environmental policies are other ways people can make a difference.As one scientist put it,"We are all part of the ecosystem,and our choices have consequences for the animals we share the planet with." 1.What are the three main threats to animal habitats mentioned in the passage? 2.How does climate change affect animal species according to the passage? 3.What example is given to show the impact of invasive species? 4.What is the most effective way to save species according to conservation biologists? 5.What can individuals do to help protect animal habitats?(List at least two actions.) 四、短文填空 阅读下面短文，在空白处填入个适当的单词或括号内单词的正确形式。 Many people(1) that zoos are(2) to animals.However,others(3) that zoos play a key role in (4) For example,(5) hunting and habitat loss are the biggest (6) to wildlife.Zoos can help protect endangered species from becoming (7) .(8) they provide education and raise public awareness.But we need a new(9) to animal welfare,such as creating larger and more natural enclosures.It is (10) for zoos to focus on animal well-being.Scientists are (11) to mimic the natural habitats of animals so that they can (12) to captivity more easily.Without these efforts,many species would be under serious (13) 2. 3. 4. 5. 6. 7. 8 9 10. 11. 12. 13. 五、写作 Some people believe that zoos are necessary for protecting endangered animals,while others think keeping animals in captivity is cruel and should be banned.Discuss both views and give your own opinion. Use specific reasons and examples to support your answer. 参考答案 Passage 1:1.A 2.B 3.A 4.C 5.C 一、 阅读理解 Passage 2:1.C 2.B 3.C 4.C5.B 二、完形填空1.A;2.B;3.A;4.C:5.A;6.A;7.A;8.A;9.A;10.A;11.A;12.A 1.Deforestation,climate change,and invasive species. 2.Climate change forces species to shift their ranges,but bariers like cities and farmland may prevent them from moving fast enough to survive. 3.In Australia,feral cats and foxes have driven many native mammals to extinction;the 三、阅读短文brown tree snake wiped out most of Guam's native bird species. 回答问题 4.Protecting habitats (establishing large,connected national parks and wildlife reserves). 5.Reduce consumption of products that cause deforestation(e.g.,palm oil,beef), support conservation organizations,advocate for stronger environmental policies.(Any two) 1.argue 2.cruel 3.debate 4.conservation 5.illegal 6.threats 7.extinct 8.Moreover 四、短文填空9.approach10.essential 11.attempting 12.adjust 13.threat 五、写作 范文： Zoos have long been a subject of debate.On one hand,they are seen as essential for conservation.Many species,such as the black-footed ferret,have been saved from extinction through captive breeding programs.Zoos also educate the public and support research.On the other hand,critics argue that keeping animals in cages is cruel and unnatural.Even well-designed enclosures cannot replace the freedom of the wild,and many animals suffer from stress and health problems. In my opinion,whether zoos are acceptable depends on their quality.Ethical zoos that prioritize animal welfare,provide spacious and enriched habitats,and contribute to conservation can play a positive role. TT---.--11-1.1---41-1上--1---1.-…-1.1--11--111--1--11-1----1----1