Unit 5 Section Ⅰ Starting out & Understanding ideas(Word教参)-【学霸笔记·同步精讲】2026-2027学年高中英语必修第一册(外研版)

2026-10-12
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教辅
高智传媒科技中心
进店逛逛

摘要:

本讲义围绕黑脉金斑蝶迁徙研究及意义这一核心知识点,构建“课前图片导入激趣—速读理清主旨与结构—精读细节与批判性思考—语法填空学以致用”的递进式学习支架,系统梳理迁徙原因、导航机制、生存现状及保护措施。 资料以图片导入和结构线索图辅助语言理解,通过“蝴蝶精神”等创造性问题培养思维品质,结合环保主题渗透文化意识中的生态责任。课中助力教师梳理文脉,课后词汇句型练习及语块翻译帮助学生巩固知识,查漏补缺。

内容正文:

Section Ⅰ Starting out & Understanding ideas Part Ⅰ Reading comprehension 第一步 课前导入·激趣启思 Look at the pictures and choose the animals that migrate.  Monarch butterfly, Siberian crane, Atlantic salmon,and some types of killer whales.  第二步 速读课文·理清脉络 1.What’s the main idea of the passage?( D ) A.The reason why the monarch butterfly migrates. B.The process of the monarch butterfly’s migration. C.A study about the monarch butterfly. D.A study on the migration of the monarch butterfly and its significance. 2.Structures and clues 第三步 精读课文·领悟细节 Task 1:Read the passage carefully and choose the best answers. 1.How many reasons for animals’ migration are mentioned in the first paragraph?(  ) A.One.        B.Two. C.Three.  D.Four. 2.Why does the monarch butterfly migrate every autumn?(  ) A.To find a partner. B.To spend the winter. C.To tell the time of day. D.To measure the position of the sun. 3.What might occur to the North American monarch butterfly during its migration on a cloudy day?(  ) A.It may lose its way. B.It can’t see anything. C.It can’t find any food. D.It will feel very cold. 4.What does the word “crash” in paragraph 4 mean?(  ) A.Succeed.  B.Fail. C.Increase.  D.Drop. 5.Which section is this article likely to appear in the newspaper?(  ) A.Sports.  B.Health. C.Hobby.  D.Wildlife. 答案:1-5 CBADD Task 2:Think creatively and critically and answer the questions. 1.What spirit can you learn from the monarch butterflies?  They devote every effort to migration, and their amazing ability to migrate makes us feel surprised.We learn that as long as we persevere, we will succeed.  2.If you were the butterfly, will you overcome all the difficulties to reach a warmer place?  Yes, I will.Although I may suffer a lot when dealing with the difficulties, I will enjoy a brighter future and live a better life.  第四步 课文融通·学以致用   根据课文内容,在空白处填入1个适当的单词或括号内单词的正确形式。   Many animals move from one place 1. to  another at certain times annually, which is called migration.One of the most 2. wonderful  (wonder) migrations in nature is that of the North American monarch butterfly.The mass migration of the monarch is no longer a mystery, according to a team of scientists 3. led  (lead) by a professor who observed their movements.They have found out that the monarch is able to tell the time of day and uses its eyes 4. to measure  (measure) the position of the sun, which allows the butterfly to determine the way to go.   Unfortunately, the population of the monarch 5. has crashed  (crash) in the last few years.6. Sadly  (sad), human activity is the main reason 7. why  the number of monarch butterflies is falling.People are destroying the environment where the butterfly can be found.They cut down trees and use chemicals, 8. killing  (kill) the plants which monarch caterpillars eat.   Fortunately, the research on the monarch’s behaviour has led to people’s greater 9. awareness  (aware) of this creature.People have been working together to make sure that there is enough food for it.If this works, 10. the  number of monarch butterflies may increase once again. The Monarch’s Journey   Many animals move from one place to another① at certain times of the year②.This annual movement③ is called migration④. They migrate to find food, seek a partner⑤, or in search of warmer weather⑥.One of the most wonderful migrations in nature⑦ is that of the North American monarch butterfly.   Every autumn, millions of these beautiful insects⑧ with fine black and orange wings begin a long and difficult journey.Somehow they manage to travel around 4,000 kilometres south⑨ and find their way to California⑩ or Mexico.However,[1]until recently no one knew how they did this.   [2]A team of scientists⑪ led by Professor Eli Shlizerman at the University of Washington has now found the answer.They have found out⑫ that the monarch is able to tell the time of day⑬.It uses its eyes to measure the position of the sun⑭.[3]These two pieces of information⑮ — the time of day and the point where the sun is in the sky — allow the butterfly to determine the way to go⑯.[4]Eventually, it manages to reach the places where it will spend the winter.   【释疑难】 [1]句中how引导宾语从句。   [2]句中led ...Washington为过去分词短语作后置定语。   [3]句中where引导限制性定语从句。   [4]句中where引导限制性定语从句。   [5]The solution to⑰ the mystery of the monarch’s amazing ability comes at a time when it is in serious trouble⑱. Its population has crashed by as much as 90 per cent⑲ in the last few years⑳.Sadly, human activity is the main reason why the number of monarch butterflies㉑ is falling.In many of the places where the butterfly can be found, people are destroying the natural environment㉒.[6]They cut down trees㉓ and use chemicals that kill the plants that monarch caterpillars eat.   The research on the monarch’s behaviour has however led to㉔ a greater awareness of this creature.People have been working together㉕ to record its migration and make sure㉖ that there are enough plants for it to feed on㉗.If this works,there may come a time when the number of monarch butterflies increases once again㉘.[7]The more we know about㉙ this lovely creature, the greater the chance it will survive and keep its place in the natural world㉚ for a long time to come.   【释疑难】 [5]句中when引导限制性定语从句。   [6]句中两个that都引导限制性定语从句,先行词分别为chemicals和plants。第一个that在从句中作主语,第二个that在从句中作宾语。   [7]The more ...,the greater ...为“the+比较级..., the+比较级...”结构。   【赏靓点】 第四段先以“解谜”与“濒危”的反差设定,唤起读者“惊叹其能力却惋惜其处境”的复杂情绪;后续用具体数据强化危机的严峻性,再以Sadly, human activity is the main reason点明祸因,让读者的情感从“惋惜”转向“反思”;接着列举具体破坏行为,将抽象的“人类影响”具象化,加深读者的愧疚感。 语块翻译 ① 从一处迁到另一处  ② 在每年的特定时间  ③ 一年一度的行为  ④ 叫作迁徙  ⑤ 寻找配偶  ⑥ 寻找更温暖的环境  ⑦ 在自然界中  ⑧ 数百万只这种美丽的昆虫  ⑨ 完成约四千米的南行旅程  ⑩ 成功到达加利福尼亚州  ⑪  一支科学家团队  ⑫  发现  ⑬  判断时间  ⑭  测量太阳的位置  ⑮  两条信息  ⑯  让黑脉金斑蝶能够判定前进的方向  ⑰  ……的答案  ⑱  处于极度困境中  ⑲  减少了90%之多  ⑳  在过去的几年里  ㉑  黑脉金斑蝶的数量  ㉒ 破坏自然环境  ㉓  砍伐树木  ㉔ 导致  ㉕ 共同努力  ㉖  确保  ㉗  以……为食  ㉘ 再次  ㉙  了解  ㉚  保持它在自然界的位置  参考译文 黑脉金斑蝶的旅程   许多动物都会在每年的特定时间从一处迁移到另一处。这种一年一度的行为叫作“迁徙”。动物为了觅食、寻找配偶或更温暖的环境而迁徙。自然界最为壮观的迁徙之一就是北美洲黑脉金斑蝶的迁徙。   每年秋天,数百万只这种翅膀橙黑相间的美丽昆虫都会开启漫长且艰辛的旅程。它们总是能够完成约4,000千米的南行旅程,成功到达(美国)加利福尼亚州或墨西哥。然而,直到最近人们才明白它们是如何做到的。   一支由伊莱·史莱泽曼教授领导的来自华盛顿大学的科学家团队现已找到了答案。他们发现,黑脉金斑蝶可以判断时间,并能用眼睛测量太阳的位置。这两条信息——一天中的时刻和太阳在天空中的位置——让黑脉金斑蝶能够判定前进的方向,最终成功抵达过冬的地点。   黑脉金斑蝶这一惊人能力的奥秘被揭开时,这一生物正处于水深火热的生存状态中。其数量在近年内减少了百分之九十之多。不幸的是,人类活动是造成其数量下降的主要原因。在黑脉金斑蝶生存的许多地方,人们正破坏着那里的自然环境。他们砍伐树木,他们所用的化学制剂杀死了黑脉金斑蝶幼虫食用的植物。   不过,对黑脉金斑蝶行为的研究也使得人们对这种生物有了更多的了解。人们已经在共同努力,记录它的迁徙,并确保它有足够的食物。如果这些努力产生效果,黑脉金斑蝶的数量在未来有可能再次回升。我们对这种可爱的生物了解得越多,它在自然界中得以长久生存并保持其位置的可能性就越大。 Part Ⅱ Language points Ⅰ.阅读词汇 1.Atlantic salmon       大西洋 鲑鱼 2.killer whale  虎 鲸  3.the solution to the mystery  解开 谜团 的方法 4.crash to an all-time low   跌 至历史最低点 5.lovely creature  可爱的 生物  Ⅱ.写作词汇 1.animal  charity    动物慈善机构 2. seek  a partner  寻找配偶 3.a respectable  professor   一位值得尊敬的教授 4.the  position  of the sun  太阳的位置 5.as much as 90  per cent   多达90% Ⅲ.多义词汇 ①measure the water depth   测量水深  ②take measures   采取措施  ③measure the cost of risk   估量风险的代价  ④measure five feet tall   量度为五英尺高  Ⅳ.拓展词汇 1. annual  adj.一年一度的,每年的→annually adv.每年 2. migrate  v.移栖,迁徙→migration n.迁徙 3. determine  v.测定,确定→ determined  adj.下定决心的,坚定的→determination n.决心;决定 4. eventually  adv.终于,最终→eventual adj.最终的 5. solution  n.解决,解决办法→ solve  v.解决;解答 6. amazing  adj.惊人的,了不起的→amazed adj.惊奇的,惊讶的→amaze v.使惊奇,使惊愕→amazement n.吃惊;惊奇 7. destroy  v.破坏,毁掉→destruction n.破坏,摧毁→destructive adj.破坏性的,毁灭性的 8. chemical  n.化学品→chemistry n.化学→chemist n.化学家 9. survive  v.活下来,幸存→survivor n.幸存者,生还者→survival n.存活,幸存 10. effect  n.影响,结果→effective adj.有效的,有影响的 【构词法】 形容词+后缀-ly构成副词 ①lucky→luckily(幸运地) ②gentle→gently(温和地) ③true→truly(真正地) Ⅴ.短语互译 1. from one place to another  从一处到另一处 2. in search of   寻找,搜寻 3. millions of   数以百万计的,许多的 4. manage to do   设法做成 5. in trouble   有麻烦,处于困境中 6. as much as   多达 7.in the last few years   在过去几年里  8.the number of ...   ……的数量  9.cut down    削减;砍倒  10.lead to   导致,引起  11.work together   合作;共事,共同工作  12.make sure   确保  13.once again   再一次  14.feed on   以……为食  Ⅵ.句型填空 1.句型公式:that 替代前面提到的同一类事物 教材原句: One of the most wonderful migrations in nature is that  of the North American monarch butterfly. 自然界最为壮观的迁徙之一就是北美洲黑脉金斑蝶的迁徙。 2.句型公式:have been doing sth 表示“一直在做某事” 教材原句:People  have been working together  to record its migration and make sure that there are enough plants for it to feed on. 人们已经在共同努力,记录它的迁徙,并确保它有足够的食物。 3.句型公式:the+比较级...,the+比较级... 教材原句: The more  we know about this lovely creature,  the greater  the chance it will survive ... 我们对这种可爱的生物了解得越多,它存活下来的机会就越大…… 写作词汇集释 1.seek v.寻找,寻求 教材原句 They migrate to find food, seek a partner, or in search of warmer weather. 动物为了觅食、寻找配偶或更温暖的环境而迁徙。 【用法】 seek for        寻找 seek after  追求 seek out  找出;搜出 seek to do sth  设法做某事 【佳句】 I’m writing to seek for the position advertised for environmental protection volunteers in the April 10 Student Daily. (求职信) 我写信是想谋求4月10日《学生日报》上刊登的环保志愿者的职位。 【练透】 单句语法填空 ①The professor sought  to promote  (promote) the students’ interest in his class. ②In the process of seeking  for  beauty, I was totally immersed in the charm of nature. 【写美】 完成句子 ③我写信寻求帮助,因为我在英语学习方面有困难。  I’m writing to seek help  because I’m in trouble with my English learning. 2.measure v.量,测量;衡量 n.措施,方法(常用复数) 教材原句 It uses its eyes to measure the position of the sun.它用眼睛测量太阳的位置。 【用法】 (1)measure ...by ...   用……来衡量…… be measured by/in  用……来衡量/测量 (2)take measures to do sth   采取措施做某事 make sth to sb’s measure 按照某人的尺寸做某物 【佳句】 It is high time that we should take effective measures to call on people to protect ocean creatures.该是我们采取有效措施号召人们保护海洋生物的时候了。 【点津】 measure还可用作连系动词,意为“(尺寸、长短、数量等)量度为”。 As you can see, the room measures 25 feet across. 如你所见,这个房间宽25英尺。 【练透】 单句语法填空 ①We can’t measure a person’s success merely  by  the amount of money they have. ②It seemed as if the suit was made  to  his measure. 【写美】 句式升级 ③A meaningful activity was held last weekend in which we looked for and recorded the history of that bridge which measured more than 200 metres long. →A meaningful activity was held last weekend in which we looked for and recorded the history of that bridge  measuring more than 200 metres long .(动词-ing短语作定语) 3.determine v.测定,确定→determined adj.下定决心的,坚定的→determination n.决心;决定 教材原句 These two pieces of information — the time of day and the point where the sun is in the sky — allow the butterfly to determine the way to go. 这两条信息——一天中的时刻和太阳在天空中的位置——让黑脉金斑蝶能够判定前进的方向。 【用法】 (1)determine to do sth  决定做某事 determine on/upon (doing) sth  决定(做)某事 determine sb to do sth  使某人下定决心做某事 (2)be determined to do sth  决定做某事 (3)with determination  坚决地 【佳句】 No matter what you determine to do, I would side with you. (慰问信) 不管你决定做什么,我都会支持你。 【练透】 单句语法填空 ①She is a famous volleyball coach,a woman with great  determination  (determine). ②I have determined on  traveling  (travel) abroad after graduation to broaden my horizons and seek my fortune. ③His  determined  (determine) look suggested that he wouldn’t change his mind. 【写美】 完成句子 ④我决定要赢得这次英语演讲比赛,所以写信向您征求改善英语发音的建议。 (求助信)  Determined to win the English speech competition , I am writing to seek your advice on improving my English pronunciation.(determined) 4.amazing adj.惊人的,了不起的→amazed adj.惊奇的,惊讶的→amaze vt.使惊愕,使惊奇→amazement n.吃惊,惊奇 教材原句 The solution to the mystery of the monarch’s amazing ability comes at a time when it is in serious trouble. 黑脉金斑蝶这一惊人能力的奥秘被揭开时,这一生物正处于水深火热的生存状态中。 【用法】 (1)It is amazing that ...  令人惊讶的是…… (2)It amazes sb that  ……让某人很惊讶 (3)be amazed at/by/that ...  对……大为吃惊 be amazed to do sth  惊奇地做某事 (4)to one’s amazement  令某人吃惊的是 in amazement  惊奇地 【佳句】 Thanks to your help, I have made amazing progress in English. (感谢信) 多亏了你的帮助,我在英语方面取得了惊人的进步。 【点津】 以-ing结尾的形容词常表示事物的性质或特征,一般用来修饰事或物,意为“令人……的”;以-ed结尾的形容词常用来修饰人,表示人的心理状态,意为“感到……的”,有时也可修饰look/expression(表情),smile,tears等表示某人情感状况的名词。 【练透】 单句语法填空 ①Spring, like an  amazing  (amaze) artist, paints our campus with richer and deeper colors.(明喻) ②Mom was amazed  to find  (find) that under the guidance of their father,the children successfully made the breakfast. ③The audience was  amazed  (amaze) at his show of sportsmanship and cheered and clapped for the cyclists. 【写美】 一句多译 ④让珍妮惊奇的是,一条美丽的真珍珠项链平静地放在盒子里,这让她心跳加速。 → To Jenny’s amazement ,a beautiful real pearl necklace lay peacefully in the box, which set her heart racing.(amazement) → It amazed Jenny that  a beautiful real pearl necklace lay peacefully in the box, which set her heart racing.(it作形式主语) → What amazed Jenny was that  a beautiful real pearl necklace lay peacefully in the box, which set her heart racing.(what引导主语从句) 5.effect n.影响,结果→effective adj.有效的;有影响的 教材原句 Then use the sentences to complete the “cause-effect” flow charts. 然后用句子来完成“因果”流程图。 【用法】 have an effect on/upon  对……产生影响 come into effect  生效 take effect  见效,起作用 in effect  实际上;事实上 side effect  副作用 【佳句】  Learning painting had a great effect on me,as it allowed me to express my emotions in a brand-new way. (2023·全国乙卷) 学习绘画对我产生了很大的影响,因为它让我能够以一种全新的方式表达自己的情感。 【练透】 单句语法填空 ①Besides, working in the garden seems to have a calming effect  on  Jaramillo’s special education students,many of whom have emotional control issues. ②Talking about your feelings with someone you trust is one of the most  effective (effect) ways to reduce stress. ③ In  effect, it was my carelessness that led to the problem. 【写美】 完成句子 ④据报道,新的法律已经生效,现在这里的野生动物的数量在增加。 It is reported that  the new law has come into effect ,and the number of wild animals here is on the increase now. 阅读词汇清障 Ⅰ.一词多义 快速阅读下列句子并选出句中加蓝词汇对应的意思 measure A.v.测量      B.n.措施 C.v.估量,衡量  D.v.量度为 ①When building the bookshelf, he carefully measured the length of the wooden board.   A  ②It is difficult to measure the success of the campaign at this stage.   C  ③We should take effective measures to improve the whales’ living environment.   B  ④The ancient stone bridge measures 50 meters long and 6 meters wide.   D  Ⅱ.熟词生义 根据语境写出加蓝词的词性和含义 1.He was in an awkward position when he forgot to bring his textbook to class.  n.处境  2.My laptop crashed while I was writing my English essay, and I lost all my work.  v.(系统)崩溃  3.I had been with the firm for over twenty years,but when I became aware of its financial difficulties I decided to clear out before the crash came.  n.破产  重点句型解构 ◇句型公式:the+比较级 ...,the+比较级 ... 教材原句 The more we know about this lovely creature, the greater the chance it will survive ... 我们对这种可爱的生物了解得越多,它存活下来的机会就越大…… 【用法】 (1)“the+比较级(+主语+谓语),the+比较级(+主语+谓语)”意为“越……,就越……”。 (2)“the+比较级 ..., the+比较级 ...”结构中,第一个“the+比较级 ...”是表示条件的状语从句,在表示将来意义的情况下,从句用一般现在时表示将来。 (3)“比较级+and+比较级”表示“越来越……”。 【佳句】 The more careful you are,the fewer mistakes you’ll make. 你越细心,犯的错误就会越少。 【写美】 微写作 ①当我走在一条泥土路上的时候,天越黑,我越害怕。 (心理描写) While I was walking on the dirt path,  the darker  it was,  the more frightened  I was. ②起初我以为我明白了老师所说的,但是他解释得越多,我就越迷惑。 (心理描写) At first I thought I understood what my teacher said, but the more he explained,  the more confused I became . 维度一:品句填词 1.The school trip has become an  annual  (一年一度的) event. 2.He  sought  (寻找) a man to help finish the task but failed. 3.The population of this species has  crashed  (暴跌) because of human activities. 4.He is a good doctor in the patients’ eyes and a kind medical  professor  (教授) in his students’ eyes. 5.The new bridge  measuring  (量度为) twice as long as the old one is still under construction. 6.For most people, physics probably remains one of those  mysteries  (奥秘) of life. 7.I joined in a city marathon which was being organized to help raise money for  charity  (慈善机构). 8.I sincerely hope that you will be able to think in my position  and accept my apologies. 9.To achieve harmony between humans and animals, the world must protect these beautiful creatures . 10.The explosion that happened last night completely destroyed  the building. 维度二:词形转换 1.It seems  amazing  (amaze) that we can get information in a minute. 2.We all should raise  awareness  (aware) of the risk of virus transmission. 3.When you don’t agree with each other, you should agree to give up something to find a  solution  (solve). 4.She hoped to get a job on the local newspaper and she  eventually  (eventual) worked for The Times. 5.Any  migration  (migrate) of this type requires careful preparation and planning. 6.Those people trapped in the ruins greatly need fresh food and water for  survival  (survive). 7.We have the  determination  (determine) to win honour for our motherland. 8.They are doing what is necessary to prevent wholesale  destruction  (destroy) of vegetation. 9.He was being very  mysterious  (mystery), and wouldn’t tell me what he was up to. 10.Tests include  measurement  (measure) of height, weight, and blood pressure. 维度三:固定搭配和句式 1.The government will take measures  to help  (help) college graduates to find jobs next year. 2.Hard as it is,the Chinese government is determined  to open  (open) up the new Silk Road. 3.There is a lot of evidence to prove that smoking has a bad effect  on  our lungs. 4.As forests are being  cut down  (砍倒), the habitat of the tiger is becoming smaller and smaller. 5.The more you got along with them,  the better you would feel  (你的感觉就越好). Ⅰ.阅读理解 A   (2026·福建华安一中高一上月考)A new United Nations (UN) report says one-fifth of the world’s migratory animals are at risk of disappearing.Animals that migrate move from one area to another at different times of the year.   The threats (威胁) the animals face include habitat loss, illegal hunting, pollution and natural disasters.Many kinds of migratory animals, including songbirds, sea turtles, whales, sharks and others, move to different environments as the seasons change.   The UN report says about 44 percent of migratory species around the world are decreasing in population.In addition, about one in five of 1,200 species watched by the UN are at risk of becoming endangered, or completely disappearing.   These are species that move around the globe.They move to feed and breed and also need sites to stop along the way.Any habitat loss or other threats during their trips can make the animal populations fall.“Migration is important to some species.If you cut the migration, you’re going to kill the species,” said an expert.   The researchers examined existing data, including information from the International Union for Conservation of Nature’s Red List of Threatened Species.The list identifies wildlife across the world facing threats at present.   The report was presented at a meeting of the UN’s Convention on the Conservation of Migratory Species of Wild Animals in Samarkand, Uzbekistan, Attendees of the gathering are examining suggestions for conservation measures.They are also working to identify new species of concern.Susan Lieberman is vice president of the international policy at the Wildlife Conservation Society, a non-governmental organization.She said,“One country alone cannot save any of these species.” 语篇解读:本文是一篇说明文。联合国报告显示,全球五分之一迁徙动物濒临灭绝,文章介绍了迁徙动物面临的主要威胁,并指出全球应共同努力来保护迁徙动物。 1.What does the UN report mainly show?(  ) A.Most animals are disappearing. B.Migratory species are increasing. C.Migratory animals face some threats. D.Most species face some natural disasters. 解析:C 细节理解题。根据第一、二段首句可知,这份联合国报告主要表明迁徙动物正面临多种生存威胁。 2.What does migration mean to some species according to the expert in paragraph 4?(  ) A.Losing their competitors. B.A matter of life and death. C.A lack of food and movement. D.Destroying their habitats. 解析:B 推理判断题。根据第四段中专家的说法可推知,迁徙对部分物种而言是生死攸关的大事。 3.What can we infer from Susan Lieberman’s words in the last paragraph?(  ) A.It is difficult to identify migratory animals. B.It is impossible to protect migratory animals. C.Rescuing migratory species depends on policies. D.Rescuing migratory species requires global efforts. 解析:D 推理判断题。根据最后一段最后两句可推知,拯救迁徙物种需要全球各国协同合作。 4.Which of the following can be the best title for the text?(  ) A.Human Activities Are Affecting Wildlife B.International Meetings Push Animal Protection C.Some Migratory Animals Are at Risk of Extinction D.Many More Animals Are Regarded as Endangered Species 解析:C 标题归纳题。第一段开篇点明“全球五分之一迁徙动物面临灭绝风险”,下文围绕迁徙动物面临的威胁、种群数量变化及保护需求展开。因此,C项(部分迁徙动物面临灭绝风险)为文章最佳标题。 B   (2026·兴化中学高一上调研)Everyone knows this: Slowly turn up the heat on a frog in a pot of water, and the frog won’t hop out.Unaware of the slight increase in heat, it will stay put until — well, until it dies.When it comes to the effect of rising global temperatures on amphibians (两栖动物), the frog-boiling fable is more than just a metaphor (隐喻).   Climate change is becoming one of the biggest threats to frogs and other amphibians, according to a major study published Wednesday in the journal Nature.Between 2004 and 2022, rising temperatures became the primary reason why more than 100 amphibian species were slipping toward extinction.   The spread of disease among frogs and the destruction of their habitats have long been recognized as reasons why many amphibians are decreasing.But this new study establishes climate change as a major risk for amphibians around the world, too.The soft-skinned animals lack the fur and feathers to help adjust their temperature in this hotter and more drought-stricken world.   Less attention is paid to frogs and other amphibians compared to more well-known groups like birds.But losing amphibians would be disastrous because they often act as a key link in the food web of ecosystems, wolfing insects down and, in turn, being eaten by larger predators (捕食者).“Without those amphibians to fill that role, we will see the breakdown of this food web,” said Neam, who works for an Austin-based environmental group.   Luckily, habitat protection and other conservation measures have been taken to help recover more than five dozen amphibians from Costa Rica to Malaysia.“It’s not all bad news,” said Jennifer Luedtke, an amphibian group leader of the International Union for Conservation of Nature.“But we really must build on this improvement and significantly increase investment in amphibian conservation.” 语篇解读:本文是一篇说明文。研究发现,气候变化导致两栖动物数量减少。文章分析了两栖动物数量减少会带来的影响。 5.How is the topic introduced?(  ) A.By listing facts.  B.By explaining ideas. C.By sharing a story.  D.By raising a question. 解析:C 推理判断题。根据第一段内容可推知,文章通过分享故事引入。 6.What is the main reason for the decrease of amphibians according to the new study?(  ) A.The spread of disease. B.The loss of habitats. C.The rise of temperature. D.The lack of feathers. 解析:C 细节理解题。根据第二段第二句可知,导致两栖动物数量减少的主要原因是温度的升高。 7.What will happen if the number of amphibians decreases?(  ) A.The food chain will be destroyed. B.Wolves will depend more on insects. C.Predators will be the key role of the web. D.The ecosystem will become more diverse. 解析:A 细节理解题。根据倒数第二段内容可知,如果两栖动物的数量减少,食物链将被破坏。 8.How does Luedtke feel about the future of amphibians?(  ) A.Worried.  B.Hopeful. C.Uncertain.  D.Curious. 解析:B 推理判断题。根据最后一段中Jennifer Luedtke所说的话可推知,他对两栖动物的未来充满希望。 Ⅱ.阅读七选五   (2026·北师大东营实验学校高一上期中)A woman who owned a tailless (无尾的) dog asked me, “My dog doesn’t have a tail to move back and forth to tell me whether he is happy or not.9.   I wonder if I am failing to recognize some hidden signals that might actually be a doggy smile.”   The issue is not whether or not dogs feel emotions.Charles Darwin wrote much about animal emotions and singled out dogs as examples.10.   Nobel Prize winner Konrad Lorenz also observed the broad range of emotions in dogs.   All of these researchers concluded that dogs have most of the same emotions that humans do, including fear, anger, sadness, and joy.The question is not whether dogs experience emotions, since that seems to be a scientifically accepted fact.11.   Would this show up as a facial signal, like the smile of a human?   In fact, there is a limitation on the range of facial expressions produced by dogs.This is because dogs have a muzzle (鼻口部) whose construction is different from that of our mouths.All vertebrate animals (脊椎动物), except humans, have muzzles.Aided by powerful muscles, the muzzle is designed for strength rather than flexibility.12.     13.   As a result, the muscles that give strength to the muzzle also limit the control and flexibility of the dog’s mouth area.The reduced flexibility of a dog’s mouth area limits the variety of facial expressions that dogs can make with their mouths. A.My friends say their pet dogs smile obviously. B.Therefore, it can be used as a weapon and a tool. C.Strength and flexibility often work against each other. D.That’s because they feel many of our human emotions. E.This means a dog’s “smile” is not a sign of friendliness. F.I have watched his face a lot, but he never seems to smile. G.Instead, understanding how dogs show emotions like joy is more important. 语篇解读:本文是一篇说明文。文章围绕“无尾狗如何表达情绪”展开,阐述了狗具备和人类相似的多种情绪。 9.F 上句提到作者无法判断狗的情绪,下句提到作者对“狗微笑”的疑惑。F项(我经常观察他的脸,但他似乎从不笑)承上启下,说明作者观察狗脸部的情况。 10.D 上文提到达尔文认为狗和人一样都是有情感的。D项(这是因为它们能感受到我们人类的多种情绪)解释了达尔文以狗为例的原因,D项中的they指代dogs。 11.G 本段首句提到研究人员发现狗和人类一样有着同样的情感,由此推断,空处应是了解狗如何表达情感是很重要的。G项(相反,了解狗如何表达喜悦之类的情绪才更为重要)通过转折引出真正的研究重点:狗如何表达情绪。 12.B 上句提到狗的鼻口部是为了力量而设计的。B项(因此,它可以被当作武器和工具来使用)进一步说明鼻口部“力量感”带来的作用,B项中的Therefore表示因果关系,it指代上句中的muzzle。 13.C 下句提到狗的鼻口部限制了狗的口腔灵活性。C项(力量和灵活性往往是相互制约的)精准概括了二者的对立关系,其中的work against each other对应下文肌肉带来的“力量”与“灵活性受限”的结果,适合作为段落主旨句。 Ⅲ.语法填空   Anna Bondarenko, an Internet influencer 14.       her 20s, had a good time in Tianjin in mid-September.She explored 15.       the northern city has to offer: sitting on the Ferris wheel while experiencing traditional Chinese opera and enjoying local dishes.“It’s really breathtaking to see the city from the Ferris wheel.It’s also fun communicating with the opera artists and trying the makeup,” she says with 16.       (admire).   Bondarenko is addicted 17.       the Chinese landscape.She has travelled to several places around China since she came to study business in Shanghai two years ago.She loves travelling to places like Beijing and Shanghai, as well as 18.      (small) ones like Zhuzhou and Changsha.“Every city has its own vibes,” she says.   As she shares her travels around China on YouTube, a popular social media platform, she finds that her many followers 19.       (attract) to the diversity of the country’s tourism resources.“My followers make 20.       (comment) like how Suzhou, Jiangsu Province, looks amazing,” says Bondarenko.Her family has also been fascinated by China’s history and culture, coming to visit her many times.“My brother has become 21.      (extreme) interested in China and started to learn Mandarin after he visited me in Shanghai several months ago,” she says.   In mid-September, Bondarenko was asked to go to the Global Traveller (Tianjin) Conference.Its goal was to encourage more influencers 22.       (record) and share their travelling experiences in China, thus keeping the popularity of the “China Travel” trend, which is 23.      increasingly popular phrase on YouTube. 语篇解读:本文是一篇说明文。文章介绍了网红Anna Bondarenko在中国旅行并分享这些旅行经历的故事。 14.in 考查介词。in her 20s表示“二十多岁时”。故填in。 15.what/whatever 考查宾语从句。空后为宾语从句,作explored的宾语,表示“……的一切”。故填what/whatever。 16.admiration 考查词形转换。介词with后接名词作宾语,故填admiration。 17.to 考查介词。be addicted to对……上瘾。故填to。 18.smaller 考查形容词比较级。此处与Beijing、 Shanghai作对比,应用比较级形式。故填smaller。 19.are attracted 考查时态和语态。设空处应用一般现在时,主语her many followers与attract之间为被动关系,应用一般现在时的被动语态。故填are attracted。 20.comments 考查名词复数。make后接名词comment作宾语,表示多个“评论”用复数。故填comments。 21.extremely 考查词形转换。设空处修饰形容词interested,应用副词形式。故填extremely。 22.to record 考查非谓语动词。encourage sb to do sth鼓励某人做某事。故填to record。 23.an 考查冠词。此处泛指“一个越来越流行的短语”,且increasingly的发音以元音音素开头,故填an。 1 / 2 学科网(北京)股份有限公司 $

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Unit 5 Section Ⅰ Starting out & Understanding ideas(Word教参)-【学霸笔记·同步精讲】2026-2027学年高中英语必修第一册(外研版)
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Unit 5 Section Ⅰ Starting out & Understanding ideas(Word教参)-【学霸笔记·同步精讲】2026-2027学年高中英语必修第一册(外研版)
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Unit 5 Section Ⅰ Starting out & Understanding ideas(Word教参)-【学霸笔记·同步精讲】2026-2027学年高中英语必修第一册(外研版)
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