Unit 5 Wild animals提升测试卷2025-2026学年译林版（2024）八年级英语上册

Unit 5 Wild animals提升测试卷答案解析 一\词汇选择题 1.答案：B 解析：句意为 “由于气候变化，北极熊面临的______问题是北极海冰的快速恶化” 。“minor” 意为次要的；“urgent” 表示紧急的、紧迫的；“trivial” 指琐碎的；“temporary” 是暂时的。结合语境，海冰恶化对北极熊生存威胁大，是紧迫问题，所以选 B。 2.答案：B 解析：句子 “环保主义者正努力通过重新造林项目______栖息地丧失的影响”。“worsen” 是使恶化；“reduce” 表示减少、降低；“ignore” 为忽视；“observe” 是观察。重新造林是为减轻栖息地丧失影响，所以选 B。 3.答案：B 解析：“______的雪豹已经适应在中亚恶劣的山区生存”。“thriving” 表示繁荣的、兴旺的；“at-risk” 意为处于危险中的，即濒危的；“common” 是常见的；“domesticated” 指驯化的。雪豹是濒危物种，“at-risk” 符合，选 B。 4.答案：B 解析：“为获取象牙而______大象仍然是对它们生存的一个紧迫威胁”。“protection” 是保护；“hunting” 表示捕猎；“breeding” 为繁殖；“studying” 是研究。非法猎象获取象牙威胁大象生存，选 B。 5.答案：C 解析：“科学家使用遥测技术来______座头鲸的迁徙模式”。“record” 是记录；“disrupt” 表示扰乱；“follow” 有跟随、追踪之意；“alter” 意为改变。使用技术是为追踪迁徙模式，选 C。 6.答案：B 解析：“当像灰狼这样的______物种被移除时，生态系统平衡受到威胁”。“minor” 表示次要的；“crucial” 表示至关重要的；“ordinary” 意思是普通的；“weak” 为虚弱的。灰狼对生态平衡关键，“crucial” 合适，选 B。 7.答案：B 解析：“将狼______到黄石国家公园对植被产生了连锁反应”。“removal” 是移除；“release” 表示释放、放生，此处可理解为引入；“study” 是研究；“protection” 为保护。是将狼引入公园产生影响，选 B。 8.答案：B 解析：“海洋中的塑料污染对海洋生物，如海龟和海豚，构成______风险”。“minor” 表示较小的；“deadly” 表示致命的；“temporary” 是暂时的；“natural” 意为自然的。塑料污染对海洋生物是致命威胁，选 B。 9.答案：A 解析：“热带雨林的______正被森林砍伐和工业活动侵蚀”。“variety of life” 表示生命的多样性，即生物多样性；“plant growth” 是植物生长；“water system” 为水系；“climate pattern” 是气候模式。森林砍伐和工业活动影响生物多样性，选 A。 10.答案：B 解析：“国际组织的______旨在协调全球野生动物保护工作”。“conflict” 表示冲突；“group” 表示团体、群体；“competition” 是竞争；“dispute” 意为争端。国际组织联合成团体协调工作，选 B。 二、语法选择题 11.答案：B 解析：这是一个虚拟语气的句子，“Had the government not implemented...” 是省略 if 的倒装结构，原句为 “If the government had not implemented...”，表示与过去事实相反的假设，主句要用 “would have done” 结构，所以选 B。 12.答案：B 解析：“______ main focus is on endangered primates” 是定语从句，先行词是 “The research team”，关系词在从句中作定语，修饰 “main focus”，表示 “研究团队的”，所以用 “whose”，选 B。 13.答案：A 解析：“It is imperative that...” 句型中，that 从句要用虚拟语气，谓语动词用 “should + 动词原形”，“should” 可以省略，所以选 A。 14.答案：A 解析：“______ by human activities” 在句中作状语，“coral reefs” 与 “affect” 之间是被动关系，即珊瑚礁被人类活动影响，所以用过去分词 “affected”，选 A。 15.答案：B 解析：“______ last month” 作定语修饰 “The conference”，“conference” 与 “hold” 之间是被动关系，且是过去发生的动作，所以用过去分词 “held”，选 B。 16.答案：A 解析：“Not until...” 位于句首时，句子要部分倒装，根据 “worsened” 可知是过去时态，所以借助助动词 “did”，选 A。 17.答案：C 解析：“______ survival depends on sea ice” 是定语从句，先行词是 “The polar bear”，关系词在从句中作定语，修饰 “survival”，表示 “北极熊的”，所以用 “whose”，选 C。 18.答案：C 解析：这是一个混合虚拟语气的句子，“ten years ago” 表明从句是与过去事实相反的假设，要用 “had done” 结构，所以选 C。 19.答案：B 解析：“______ by a renowned filmmaker” 作定语修饰 “The documentary”，“documentary” 与 “produce” 之间是被动关系，所以用过去分词 “produced”，选 B。 20.答案：A 解析：“So severe ______ the pollution” 是 so...that... 结构的倒装句，正常语序是 “The pollution is so severe”，句子描述的是现在的情况，所以用一般现在时，“pollution” 是不可数名词，be 动词用 “is”，选 A。 三、词汇填空题 21.答案：invasion 解析：句意为 “入侵物种的______经常扰乱当地生态系统平衡”，根据首字母和语境可知，此处应填 “invasion”，表示 “入侵”。 22.答案：restore 解析：“环保主义者正在努力______大熊猫退化的栖息地”，结合首字母和语境，“restore” 符合，意为 “恢复”。 23.答案：population 解析：“据估计，野生东北豹的______不到 100 只”，表示物种的数量用 “population”。 24.答案：melting 解析：“气候变化导致北极冰的______，威胁到北极熊的栖息地”，“melting” 表示 “融化”，符合语境。 25.答案：illegal 解析：“中国政府制定了严格的法律来打击______野生动物贸易”，“illegal” 表示 “非法的”，符合语义。 26.答案：conservation 解析：“野生动物______的概念包括平衡人类需求与生态保护”，“conservation” 表示 “保护”，是固定搭配。 27.答案：migration 解析：“帝王蝶每年的______跨越数千公里”，“migration” 表示 “迁徙”。 28.答案：habitat fragmentation 解析：“由于道路建设导致的______危及许多森林物种”，“habitat fragmentation” 表示 “栖息地破碎化”。 29.答案：illegal 解析：“科学家使用 DNA 检测来识别______野生动物产品”，“illegal” 表示 “非法的”。 30.答案：ecosystem services 解析：“蜜蜂提供的______包括授粉和食物生产”，“ecosystem services” 表示 “生态系统服务”。 四、语法段落填空 31.答案：faces 解析：句子描述的是客观事实，主语 “The Siberian tiger” 是单数，所以谓语动词用第三人称单数形式 “faces”。 32.答案：has shrunk 解析：“Over the past century” 是现在完成时的标志，“its range” 是单数，所以用 “has shrunk”，表示在过去的一个世纪里，其活动范围已经缩小了。 33.答案：have studied 解析：“for decades” 表示一段时间，常用于现在完成时，主语 “Researchers” 是复数，所以用 “have studied”，表示研究人员已经研究这个物种几十年了。 34.答案：have been hampered 解析：“conservation efforts” 与 “hamper” 之间是被动关系，且动作从过去持续到现在，所以用现在完成时的被动语态 “have been hampered”。 35.答案：was launched 解析：“a joint project” 与 “launch” 之间是被动关系，且事情发生在 2010 年，是过去的事情，所以用一般过去时的被动语态 “was launched”。 36.答案：has risen 解析：“Since then” 是现在完成时的标志，“the number of wild Siberian tigers” 作主语，谓语动词用单数形式，所以用 “has risen”，表示从那时起，野生东北虎的数量已经略有上升。 37.答案：is classified 解析：“the species” 与 “classify” 之间是被动关系，句子描述的是客观情况，所以用一般现在时的被动语态 “is classified”。 38.答案：continue 解析：“if” 引导的条件状语从句中，用一般现在时表将来，主语 “current trends” 是复数，所以 “continue” 用原形。 39.答案：To protect 解析：此处用动词不定式 “To protect” 作目的状语，表示为了保护这些雄伟的动物。 40.答案：strengthen 解析：“must” 是情态动词，后接动词原形，所以填 “strengthen”。 五、阅读理解 A 篇 41. 答案：B 解析：根据文中 “The primary threat to vaquitas is illegal gillnet fishing for totoaba” 可知，小头鼠海豚濒危的主要原因是非法刺网捕鱼，选 B。 42. 答案：B 解析：由 “a fish whose swim bladder is highly valued in traditional Chinese medicine” 可知，捕捞托托巴鱼是为了它的鱼鳔，选 B。 43. 答案：B 解析：文中提到 “Gillnets, which are nearly invisible underwater, accidentally entangle and drown vaquitas”，说明刺网在水下几乎看不见，所以对小头鼠海豚危险，选 B。 44. 答案：C 解析：根据 “Vaquitas are sensitive to stress, and previous attempts to relocate them have resulted in deaths” 可知，圈养繁殖提议有争议是因为小头鼠海豚可能因压力死亡，选 C。 45. 答案：C 解析：从 “Time is running out for the vaquita. Unless immediate and effective measures are taken, this species could vanish within years” 等语句可看出，作者语气急迫，选 C。 B 篇 46. 答案：B 解析：由 “Zoos have long been debated for their role in wildlife protection. While critics argue that captivity is unnatural” 可知，关于动物园的主要争论是圈养的伦理问题，选 B。 47. 答案：B 解析：根据 “the Arabian oryx was extinct in the wild by 1972 but has been reintroduced thanks to zoo breeding” 可知，阿拉伯羚羊被重新引入是因为动物园繁殖项目成功，选 B。 48. 答案：B 解析：文中提到 “Zoos also serve as research hubs, allowing scientists to study animal behavior, physiology, and reproduction”，说明动物园通过提供可控环境支持科学研究，选 B。 49. 答案：B 解析：从 “To be effective, zoos must balance animal welfare with conservation goals” 可知，现代动物园面临的挑战是平衡动物福利与保护目标，选 B。 50. 答案：C 解析：作者既提到了动物园在保护野生动物方面的积极作用，也指出了存在的问题，态度是中立且观点平衡的，选 C。 六、完形填空 51.答案：C 解析：“物种的灭绝______生态系统并威胁人类福祉”，“strengthens” 加强；“stabilizes” 稳定；“disrupts” 扰乱；“improves” 改善。灭绝会扰乱生态系统，选 C。 52.答案：A 解析：蜜蜂数量下降是令人担忧的例子，“worrying” 令人担忧的；“inspiring” 鼓舞人心的；“exciting” 令人兴奋的；“promising” 有前途的。选 A。 53.答案：B 解析：蜜蜂在授粉中起关键作用，“minor” 次要的；“crucial” 关键的；“simple” 简单的；“avoidable” 可避免的。选 B。 54.答案：D 解析：栖息地丧失、农药和气候变化使蜜蜂数量减少，“increased” 增加；“supported” 支持；“boosted” 促进；“reduced” 减少。选 D。 55.答案：A 解析：没有蜜蜂，许多作物会歉收，导致食物短缺，“leading to” 导致；“resulting from” 由…… 引起；“depending on” 取决于；“dealing with” 处理。选 A。 56.答案：B 解析：为解决问题，要减少农药使用，“increasing” 增加；“reducing” 减少；“studying” 研究；“promoting” 促进。选 B。 57.答案：C 解析：海洋生物面临严重威胁，“minimal” 最小的；“negligible” 可忽略的；“severe” 严重的；“temporary” 暂时的。选 C。 58.答案：B 解析：近年来珊瑚礁退化加速，“growth” 生长；“degradation” 退化；“protection” 保护；“research” 研究。选 B。 59.答案：B 解析：科学家正在实施珊瑚修复项目，“canceling” 取消；“implementing” 实施；“opposing” 反对；“delaying” 推迟。选 B。 60.答案：B 解析：保护不仅仅是拯救稀有物种，更是为了维持生态平衡，“destroying” 破坏；“maintaining” 维持；“ignoring” 忽视；“challenging” 挑战。选 B。 61.答案：A 解析：每个生物都对生命之网有贡献，“contributes” 贡献；“objects” 反对；“appeals” 呼吁；“reacts” 反应。选 A。 62.答案：B 解析：因此，教育和政策改变至关重要，“However” 然而；“Therefore” 因此；“Otherwise” 否则；“Meanwhile” 同时。选 B。 63.答案：C 解析：学校必须教授生物多样性的重要性，“problem” 问题；“definition” 定义；“importance” 重要性；“history” 历史。选 C。 64.答案：A 解析：政府必须制定更严格的法律，“stricter” 更严格的；“weaker” 更弱的；“older” 更老的；“simpler” 更简单的。选 A。 65.答案：B 解析：没有集体行动，野生动物保护仍是艰巨任务，“Through” 通过；“Without” 没有；“For” 为了；“With” 有。选 B。 七、书面表达参考范文 The Role of Zoos in Wildlife Protection​ People have different ideas about whether zoos help protect wild animals.​ Some think zoos are useful. They keep endangered animals safe and help them breed. Also, zoos teach visitors about wildlife, so people learn to care for animals.​ However, others disagree. They say zoos are not the animals’ natural homes. Animals may feel stressed and unhealthy in small cages. Some zoos just want to make money.​ In my view, zoos can be good if they focus on animal welfare. They should give animals more space and freedom. Then, zoos can truly help protect wildlife. 1 学科网（北京）股份有限公司 $$ Unit 5 Wild animals 提升测试卷 一、词汇选择题（每小题 1 分，共 10 分） 1.The issue facing polar bears is the rapid ___ of Arctic sea ice due to climate change. A. minor B. urgent C. trivial D. temporary 2.Conservationists are working to ________ the effects of habitat loss through reforestation projects. A. worsen B. reduce C. ignore D. observe 3.The ________ snow leopard has adapted to survive in the harsh mountainous regions of Central Asia. A. thriving B. at-risk C. common D. domesticated 4.The ________ of elephants for ivory remains a pressing threat to their survival. A. protection B. hunting C. breeding D. studying 5.Scientists use telemetry technology to ________ the migration patterns of humpback whales. A. record B. disrupt C. follow D. alter 6.The ecosystem balance is threatened when a ________ species like the gray wolf is removed. A. minor B. crucial C. ordinary D. weak 7.The ________ of wolves to Yellowstone National Park has led to a cascading effect on vegetation. A. removal B. release C. study D. protection 8.Plastic pollution in oceans poses a ________ risk to marine life, such as sea turtles and dolphins. A. minor B. deadly C. temporary D. natural 9.The ________ of the rainforest is being eroded by deforestation and industrial activities. A. variety of life B. plant growth C. water system D. climate pattern 10.The ________ of international organizations aims to coordinate global wildlife protection efforts. A. conflict B. group C. competition D. dispute 二、语法选择题（每小题 1 分，共 10 分） 11.Had the government not implemented strict anti-poaching laws, the rhino population ______ extinct by now. A. would go B. would have gone C. went D. had gone 12.The research team, ______ main focus is on endangered primates, has discovered a new species. A. which B. whose C. that D. whom 13.It is imperative that we ______ immediate action to combat the illegal wildlife trade. A. take B. took C. will take D. have taken 14.______ by human activities, the coral reefs are bleaching at an alarming rate. A. Affected B. Affecting C. To affect D. Having affected 15.The conference on wildlife conservation, ______ last month, highlighted the need for international cooperation. A. holding B. held C. to hold D. having held 16.Not until the habitat loss crisis worsened ______ the government take strict protective measures. A. did B. does C. has D. had 17.The polar bear, ______ survival depends on sea ice, is facing an uncertain future. A. who B. whom C. whose D. which 18.If we ______ more resources to wildlife protection ten years ago, the situation would be better now. A. invest B. invested C. had invested D. would invest 19.The documentary, ______ by a renowned filmmaker, reveals the plight of endangered species. A. producing B. produced C. to produce D. having produced 20.So severe ______ the pollution that many species are struggling to survive. A. is B. are C. was D. were 三、词汇填空题（每小题 1 分，共 10 分） 21.The i______ of invasive species often disrupts the local ecosystem balance. 22.Conservationists are working to r______ degraded habitats for giant pandas. 23.The v______ of the Amur leopard is estimated to be fewer than 100 in the wild. 24.Climate change is causing the m______ of Arctic ice, threatening polar bear habitats. 25.The Chinese government has established strict laws to combat i______ wildlife trade. 26.The concept of wildlife c______ involves balancing human needs with ecological protection. 27.The ______ (迁徙) of monarch butterflies spans thousands of kilometers each year. 28.The ______ (栖息地破碎化) due to road construction endangers many forest species. 29.Scientists use DNA testing to identify ______ (非法的) wildlife products. 30.The ______ (生态系统服务) provided by bees include pollination and food production. 四、语法段落填空（每小题 1 分，共 10 分） The Siberian tiger, also known as the Amur tiger, (31)______ (face) critical threats from habitat loss and poaching. Over the past century, its range (32)______ (shrink) by more than 90% due to deforestation. Researchers (33)______ (study) the species for decades, but conservation efforts (34)______ (hamper) by limited funding. In 2010, a joint project (35)______ (launch) to restore tiger habitats and combat poaching. Since then, the number of wild Siberian tigers (36)______ (rise) slightly, but the species still (37)______ (classify) as endangered. Scientists believe that if current trends (38)______ (continue), the tiger population could double by 2030. (39)______ (protect) these majestic animals, governments and NGOs must (40)______ (strengthen) collaboration and enforce stricter laws. 五、阅读理解（共 10 小题，每小题 2 分） A The Plight of the Vaquita: World's Rarest Marine Mammal The vaquita, a small porpoise native to the Gulf of California, is on the brink of extinction. With fewer than 10 individuals remaining, it is the most endangered marine mammal in the world. The primary threat to vaquitas is illegal gillnet fishing for totoaba, a fish whose swim bladder is highly valued in traditional Chinese medicine. Gillnets, which are nearly invisible underwater, accidentally entangle and drown vaquitas. Despite a ban on gillnet fishing in the vaquita's habitat, illegal fishing continues due to the high demand for totoaba products. The Mexican government has implemented patrols and removed thousands of illegal nets, but enforcement remains challenging. Conservationists have proposed capturing the remaining vaquitas for a captive breeding program, but this strategy is controversial. Vaquitas are sensitive to stress, and previous attempts to relocate them have resulted in deaths. Alternatively, some suggest using advanced sonar technology to detect and disrupt illegal fishing activities. Time is running out for the vaquita. Unless immediate and effective measures are taken, this species could vanish within years, becoming yet another victim of human greed and environmental neglect. 41. What is the main cause of the vaquita's endangerment? A. Climate change. B. Illegal gillnet fishing. C. Pollution. D. Natural predators. 42. Why is the totoaba fish hunted? A. For its meat. B. For its swim bladder. C. For its skin. D. For scientific research. 43. What makes gillnets dangerous to vaquitas? A. They are brightly colored. B. They are invisible underwater C. They emit harmful chemicals. D. They block migration routes. 44. Why is the captive breeding proposal controversial? A. Vaquitas are too aggressive. B. It is too expensive. C. Vaquitas may die from stress. D. There is no suitable habitat. 45. What is the author's tone in the passage? A. Hopeful. B. Indifferent. C. Urgent. D. Optimistic. B The Role of Zoos in Wildlife Conservation Zoos have long been debated for their role in wildlife protection. While critics argue that captivity is unnatural, modern zoos are increasingly focused on conservation, research, and education. Many zoos participate in captive breeding programs for endangered species like the California condor and black rhinoceros. These programs have helped prevent extinction, with some species being reintroduced to the wild. For example, the Arabian oryx was extinct in the wild by 1972 but has been reintroduced thanks to zoo breeding. Zoos also serve as research hubs, allowing scientists to study animal behavior, physiology, and reproduction. This research informs wild conservation efforts, such as improving habitat management or combating diseases. Additionally, zoos educate the public, fostering empathy and support for wildlife protection. However, challenges remain. Some zoos still prioritize entertainment over conservation, and captive animals may suffer from stress or health issues. To be effective, zoos must balance animal welfare with conservation goals, collaborating closely with wild reserves and research institutions. 46. What is the main debate about zoos? A. Their role in education. B. The ethics of captivity. C. Their funding sources. D. The quality of research. 47. Why was the Arabian oryx reintroduced? A. It adapted well to captivity. B. Zoo breeding programs succeeded. C. Its habitat was restored. D. Hunting was banned. 48. How do zoos support scientific research? A. By capturing wild animals. B. By providing controlled environments. C. By funding expeditions. D. By selling animal products. 49. What is a challenge for modern zoos? A. Lack of public interest. B. Balancing welfare and conservation. C. Inadequate funding. D. Resistance from researchers. 50. What is the author's attitude towards zoos? A. Completely supportive. B. Totally critical. C. Neutral with balanced views. D. Unclear. 六、完形填空（共 15 小题，每小题 1 分） Wildlife conservation is a global challenge that requires collaborative efforts. The extinction of species ______ (51) ecosystems and threatens human well-being. One of the most ______ (52) examples is the decline of bees, which play a ______ (53) role in pollination. Habitat loss, pesticides, and climate change have ______ (54) bee populations worldwide. Without bees, many crops would fail, ______ (55) food shortages. To address this, individuals and governments are creating "bee-friendly" gardens and ______ (56) pesticide use. Marine life also faces ______ (57) threats from overfishing and plastic pollution. The ______ (58) of coral reefs, often called the "rainforests of the sea," has accelerated in recent decades. Scientists are ______ (59) coral restoration projects, but the scale of the problem is enormous. Conservation is not just about saving rare species; it's about ______ (60) ecological balance. Every organism, from tiny insects to large mammals, ______ (61) to the web of life. ______ (62) , education and policy changes are crucial. Schools must teach the ______ (63) of biodiversity, and governments must enact ______ (64) laws against habitat destruction. ______ (65) collective action, wildlife conservation remains a daunting task, but together, we can secure a sustainable future. 51. A. strengthens B. stabilizes C. disrupts D. improves 52. A. worrying B. inspiring C. exciting D. promising 53. A. minor B. crucial C. simple D. avoidable 54. A. increased B. supported C. boosted D. reduced 55. A. leading to B. resulting from C. depending on D. dealing with 56. A. increasing B. reducing C. studying D. promoting 57. A. minimal B. negligible C. severe D. temporary 58. A. growth B. degradation C. protection D. research 59. A. canceling B. implementing C. opposing D. delaying 60. A. destroying B. maintaining C. ignoring D. challenging 61. A. contributes B. objects C. appeals D. reacts 62. A. However B. Therefore C. Otherwise D. Meanwhile 63. A. problem B. definition C. importance D. history 64. A. stricter B. weaker C. older D. simpler 65. A. Through B. Without C. For D. With 七、书面表达（20 分） 写一篇关于动物园是否在野生动物保护中发挥积极作用的议论文。包括: 1.支持动物园保护动物的论据。 2.反对动物园保护动物的争论。 3.你平衡的观点和理由。 至少写80个单词。 1 学科网（北京）股份有限公司 $$