必修第一册 Unit 5 Into the Wild 第1课时（Word教师用书）-【创新方案】2025年高考英语一轮总复习（外研版2019）

第1课时——精析重难点·核心词汇的深化学习 Ⅰ.单词拼写 1．The Great Wall is one of the most breathtaking (令人惊叹的) sights in the world. 2．Joanne stood with her hands on the sink, staring (凝视) out of the window. 3．This is a world of diverse sources (来源) of information, from newspapers and books to TV, radio, music and even real people. 4．He sought (寻找) everywhere for materials and finally his efforts paid off. 5．Most of the evidence was destroyed (破坏，毁掉) in the fire, thus making it almost impossible to prove the murderer guilty. 6．We eventually (最终) wound up staying in a little hotel a few miles from town. 7．The story describes the extraordinary encounter (邂逅) between a man and a dolphin. 8．Of the six people injured in the crash, only two survived (幸存)． Ⅱ.单句语法填空 1．Food allergies can result in an enormous variety (vary) of different symptoms. 2．He gave me a determined (determine) look as if to say that he would not change his mind. 3．From seeing the wildlife to witnessing sunrises, the whole experience was amazing (amaze)． 4．It was an extremely cold winter evening and freezing (freeze) fog hung in the air. 5．On her day of discharge, we shared in her delight at her recovery (recover)． 6．I have already taken steps to speed up a solution (solve) to the problem. 7．One of the most effective (effect) ways to reduce stress is to talk about feelings with someone you trust. 8．There has been a mixed reaction (react) to her appointment as a director. Ⅲ.熟词生义(写出黑体部分的词性及汉语意思) 1．It is difficult to measure the success of the campaign at this stage. v．估量 2．My parents always took the position that early nights meant healthy children.n.观点 3．We set out to determine exactly what happened that night.v.查明 4．The police eventually recovered the stolen paintings.v.找回，追回 5．She was taken to hospital suffering from shock.n.休克 Ⅳ.选词填空 cut down， fall off， at a speed of， concentrate on， recover from， after all， in search of， lead to 1．You really shouldn't have reacted to his comment on your work so violently.After_all he meant no harm to you. 2．As far as I know, it was the car accident due to drunk driving that led_to his being killed. 3．If you are trying to acquire a new skill, please concentrate_on gaining some practical experience. 4．I drove my car at_a_speed_of 100km per hour in the highway this afternoon. 5．He was forced to migrate from rural to urban areas in_search_of work. 6．She fully intends to continue her sporting career once she has recovered_from her injuries. 7．They ordered that for every tree cut_down two more be planted. 8．How did it come about that the cellphone fell_off the bridge into the river? Ⅴ.多维表达 1．(完成句子)The reason why_we've_to_grow_trees_is_that they can provide us with fresh air.我们必须种树的原因是它们能供应我们新鲜的空气。 2．(完成句子) You should pay special attention to the beginning of the passage while_you_are_reading. 当你阅读时你要特别注意文章的开头。 3．If you work harder, you will make more progress. →The_harder you work, the_more_progress you will make.(用“the＋比较级，the＋比较级”升级) 4．The house has been pulled down.He lived in the house 10 years ago. →The house where_he_lived_10_years_ago has been pulled down.(用定语从句升级) 1．seek v．(sought, sought)寻找，寻求；试图，设法 |助|表|达|　 (主旨升华句)A man is not old as long as he is seeking something. 只要一个人还有追求，他就不会老。 |精|归|纳|　 seek (for) sth./sb.from ... 从……寻找某物/某人 seek out 找出，找到 seek after 追求；追寻 seek to do sth. 试图做某事 seek one's fortune 寻找发财机会，外出闯荡 |应|用|通|(单句语法填空/完成句子)　 ①Many people spend years seeking for peace of mind, often with little success. ②Different men seek after happiness in different ways and by different methods. ③You should seek advice from your lawyer on this matter. ④She sought to_climb (climb) over the fence, but failed. ⑤They sought (seek) advice on how to project a more positive image of their company at the meeting held the other day. ⑥So, next time you're feeling down, seek_out_your_happiest_friend and let the smiles begin. 所以，下次当你情绪低落的时候，找一个最快乐的朋友一起微笑吧。 2．measure v．量，测量；估量，判定；(尺寸、长短、数量等)量度为n.措施，方法；尺度 |助|表|达|　 (话题写作之环境保护)Now that the natural surroundings are being polluted day after day, immediate measures should be taken to solve the problem.既然自然环境在一天天遭到污染，应立即采取措施解决这个问题。 |辨|析|清| (写出下列句子中measure的汉语意思) ①We must pay attention to these problems and take effective measures to solve them.措施 ②This line measures four times as long as that one.量度为 ③It seemed as if the suit was made to his own measure.尺度 ④It's hard to measure his ability when we haven't seen his work.估量 ⑤Did you measure the distance between the two development zones？测量 |精|归|纳|　 (1)be measured by/in　　　 用……来衡量/计算 measure up (to sth./sb.) 达到(期望)；符合(标准) (2)take measures to do sth. 采取措施做某事 make ...to sb.'s measure 按某人的尺寸做…… beyond measure 非常；极其；无法衡量 名师指津：measure表示“(尺寸、长短、数量等)量度为”时，是系动词，后跟测量的结果，不用于被动语态及进行时态，用作非谓语动词时，用现在分词形式。 |应|用|通|(单句语法填空/句式升级)　 ⑥The job failed to measure up to her expectations. ⑦Education shouldn't be_measured (measure) purely by examination results. ⑧In the old days, my mother always made new clothes to my own measure. ⑨You should take effective measures (measure) to improve your living conditions. ⑩He was shocked to find a huge snake and the huge snake measured over two metres long. →He was shocked to find a huge snake measuring_over_two_metres_long.(非谓语动词作定语) 3．determine v．测定，确定；查明；决定 |助|表|达|　 (深刻说理句)Attitude determines everything, details determine success or failure and habits make life. 态度决定一切，细节决定成败，习惯成就人生。 |精|归|纳|　 (1)determine to do sth.　　 决心做某事(表动作) determine on/upon (doing) sth. 决定(做)某事 (2)determined adj. 坚定的，坚决的 be determined to do sth. 决心做某事(表状态) (3)determination n. 决心 名师指津：be determined to do在句中作状语或定语时，应用determined to do sth.。类似结构还有：faced with, satisfied with, lost in, absorbed in, devoted to, buried in, convinced that ...等。 |应|用|通|(单句语法填空/句式升级)　 ①(2022·新高考Ⅰ卷写作)Today, you're here to show that uniqueness with all your diligence and determination (determine)． ②I have determined on/upon working as a volunteer teacher after graduation. ③He was determined to_build (build) a new life out of the ruins of his career. ④As he was determined to go to university, he studied hard every day. →Determined_to_go_to_university,_he studied hard every day.(分词短语作状语) 4．amazing adj.惊人的，了不起的，令人大为惊奇的 |巧|串|记|　 Faced with the sudden success, I was all struck dumb with amazement. What amazed me more was that I should receive a bunch of fresh flowers from my mother with a note card pinned on it saying “It's really an amazing dance”. 面对突如其来的成功，我惊讶得说不出话来。更让我吃惊的是，我竟然收到了妈妈送给我的一束鲜花，鲜花上还别着一张卡片，上面写着“这真是一场精彩的舞蹈”。 |精|归|纳|　 (1)amazed adj.　　　　　 惊奇的，惊讶的 be amazed at/by 对……感到惊讶 be amazed to do sth. 做某事感到惊讶 (2)amaze v. 使惊奇，使惊讶 It amazes sb.that ...＝ What amazes sb.is that ... 令某人惊讶的是…… (3)amazement n. 惊奇，惊诧，吃惊 to one's amazement 使某人惊奇的是…… in/with amazement 惊讶地；吃惊地 (4)amazingly adv. 令人吃惊地 易混辨析：amazing表示“令人惊奇的”，强调事物的特征；amazed表示“感到惊奇的”，强调人内心的感受。 |应|用|通|　 (1)单句语法填空 ①(2023·新高考Ⅰ卷)Xiao long bao (soup dumplings), those amazing (amaze) constructions of delicate dumpling wrappers encasing hot, tasty soup and sweet, fresh meat, are far and away my favorite Chinese street food. ②Amazed (amaze) at my words, my mom hugged me tightly. ③You will be amazed (amaze) at the progress we have made in such a short time. ④Hearing my words, the girl looked at me in amazement (amaze)． (2)一句多译 令我惊讶的是，他在很短的时间里就适应了异国他乡的生活。 ⑤To_my_amazement,_he adapted to life in a foreign country in a very short time.(amazement) ⑥It_amazed_me_that he adapted to life in a foreign country in a very short time. (it作形式主语) ⑦What_amazed_me_was_that he adapted to life in a foreign country in a very short time. (what引导主语从句) 5．effect n．影响，结果；效果；作用 |助|表|达|　 (话题写作之动物保护)The new law has come into effect, and the number of wild animals here is on the increase now. 新法律已经生效，这里的野生动物的数量现在正在增加。 |精|归|纳|　 (1)side effect　　　　　　　 副作用 come into/take effect 开始生效；开始实施 have an effect on/upon 对……产生影响 bring/carry/put ...into effect 使……生效；实施 in effect 实际上；事实上 cause and effect 因果 (2)effective adj. 有效的，生效的 (3)affect v. 影响；打动 |应|用|通|　 (1)单句语法填空 ①In effect, documentaries about our country are plentiful both at home and abroad. ②We all witnessed the significant results of the effective (effect) measures taken. ③The agreement signed between the two companies last week will come into effect soon. ④It won't be easy to put the changes into effect, so we must spare no effort to do it. ⑤The new law will affect (effect) us all, directly or indirectly. (2)一句多译 这些建议的实施是为了保护青少年的视力。 ⑥These suggestions came_into_effect to protect the eyesight of teenagers.(主动语态) ⑦These suggestions were_put/brought/carried_into_effect to protect the eyesight of teenagers.(被动语态) 6．concentrate v．专注，专心；集中(注意力、思想等)；全神贯注 |助|表|达|　 (续写之心理描写)The noise outside is so loud that I can't concentrate my attention on solving the problem at all. 外面的噪音如此大，以至于我根本没办法专心解决那个问题。 |精|归|纳|　 (1)concentrate one's mind/attention/energy on专心于；集中注意力/精力于 concentrate on/upon (doing) sth. 专心于(做)某事 (2)concentration n. 专注，专心 |应|用|通|　 (1)单句语法填空/完成句子 ①This year the company has concentrated on improving (improve) its efficiency. ②The book requires a great deal of concentration (concentrate)． ③He didn't notice the teacher standing by his side, because all_his_attention_was_concentrated_on_a_book. 他没有注意到老师站在他身边，因为他所有的注意力都集中在一本书上了。 (2)一句多译 你若集中精力学习英语，你就会掌握这门语言。 ④If_you_concentrate_your_energy_on_English,_you will master the language. (条件状语从句) ⑤Concentrating_your_energy_on_English,_you will master the language.(现在分词短语作状语) ⑥With_your_energy_concentrated_on_English,_you will master the language.(with复合结构) ⑦Your_energy_concentrated_on_English,_you will master the language. (独立主格结构) 7．cut down砍倒，削减，裁小 |助|表|达|　 (话题写作之环境保护)The remaining section of woodland has been cut down to ground level，causing a large variety of wildlife to lose their habitats. 林地的剩余部分被砍光了，这让许多种野生动物失去了它们的栖息地。 |精|归|纳|　 cut across/through　 抄近路穿过 cut off 切断(供给)，中断(通话等)； 砍掉；堵塞；使……与外界隔绝 cut in 插嘴，打断(谈话等) cut up 切碎 cut out 裁剪，删去；停止做(使用等) 名师指津：(1)cut down 意为“减少”时可与介词“on”连用，与cut back (on) 意义相近。(2)cut的过去式、过去分词、现在分词形式分别为：cut, cut, cutting。 |应|用|通|(用cut的相关短语填空)　 ①Immediate action should be taken, like stopping cutting_down trees to make the environment better. ②The water supply has been cut_off temporarily because the workers are repairing one of the main pipes. ③While we were watching TV, an announcer cut_in to tell us a piece of the latest news. ④My mother cut some meat up and cooked some meatballs for us. ⑤You could also have cut_out much of the repetition and thus saved many pages. 语境迁移应用(运用本单元知识完成下列语段) 主题语境——保护动物遇险记 I love animals and I would love to call at the animal shelter ①founded (found) in my town regularly to help ②take_measures_(采取措施；measure) to find new owners for the homeless animals. Last weekend, while I was looking for (用本单元词汇替换加黑词汇：③seeking) a solution for little Poppy by photographing her and posting her pictures (用本单元词汇替换加黑词汇： ④images) online, somehow, I passed out. After a while, I felt something awaking me. I slowly opened my eyes and saw a sweet－looking face. Its pink nose was breathing on me, and its big, brown eyes were focusing on (用本单元词汇替换加黑词汇：⑤concentrating_on) me with love. I smiled and said, “Hello, Poppy.” Finding me get well (用本单元词汇替换加黑词汇：⑥recover), Poppy was ⑦amazed (amaze). She wagged with excitement. She barked with joy. The incident had a profound effect ⑧on me and I decided (用本单元词汇替换加黑词汇：⑨determined) to adopt her. ⑩After_all (毕竟) I have survived thanks to her care. [课时作业评价] 主题阅读集群训练 Ⅰ.阅读理解 A (2024·青岛模拟) A six－year－old longing to keep a unicorn (独角兽) in her backyard figured she'd get the hard part out of the way first. Last November, Madeline wrote a letter to the Los Angeles County Department of Animal Care and Control with a straightforward request.“Dear LA County, I would like your approval if I can have a unicorn in my backyard if I can find one.Please send me a letter in response.” Director Mayeda replied two weeks later.The department does in fact license unicorns, she said, under certain conditions.Those include polishing the unicorn's horn at least once a month with a soft cloth, feeding it watermelon at least once a week, covering it with only nontoxic and biodegradable sparkles and giving it regular access to sunlight, moonbeams and rainbows.And, because unicorns are indeed very rare to find, the department is also giving Madeline a toy unicorn to keep her company during her search, as a token of appreciation. “It is always rewarding to hear from young people who thoughtfully consider the requirements of providing a loving home for animals，” Mayeda wrote in the letter.“I like your sense of responsible pet ownership to seek permission in advance to keep a unicorn in Los Angeles County.” Mayeda told the Washington Post that this is the first time the department has received a request for a license for a unicorn or any mythical creature.They were impressed with the first－grader for wanting to ask permission in the first place, and doing her research to work out how to go about that.She and her colleagues deal with a lot of “life－and－death” issues on the job, whether that's seeing cases of animal abuse or animals hurting people or making decisions about having to put down dangerous or sick animals.So Madeline's letter has considerably brightened their spirits, and she is due to visit the department this week to discuss her unicorn license application.Safe to say, she's in for a magical surprise. 语篇解读：本文是一篇新闻报道。文章主要报道了六岁的孩子Madeline写信给动物保护部门，希望获得许可养一只独角兽。 1．Why did Madeline write the letter? A．To apply to visit a unicorn. B．To learn to provide animal care. C．To ask permission to keep a unicorn. D．To figure out how to find a unicorn. 解析：选C　细节理解题。根据第二段内容可知，Madeline写这封信是为了申请饲养一只独角兽。 2．What can we learn from paragraph 3? A．Her application was disapproved. B．Requirements should be met for the license. C．She was presented with a live unicorn. D．Guidance was given for her search. 解析：选B　细节理解题。根据第三段内容可知，要获得许可应满足一些要求。 3．Which of the following best describes Mayeda? A．Imaginative.　　　 B．Sensitive. C．Flexible. D．Convincing. 解析：选B　推理判断题。根据倒数第二段Mayeda写的回信中，她肯定并且赞扬了Madeline的行为可推知，Mayeda很体贴谨慎。 4．Why does the department think the letter “has brightened their spirits”？ A．Because it is the first application letter for a pet. B．Because animal protection is a life－and－death issue. C．Because they are worn out with their daily work. D．Because they are touched with the girl's deeds. 解析：选D　推理判断题。根据最后一段中“They were impressed with ...work out how to go about that.”和“So Madeline's letter has considerably ...a magical surprise.”可知，该部门认为这封信 “振奋了他们的精神” 因为他们被女孩认真的行为感动了。 B (2024·菏泽模拟)When you're bored, you might start playing with a ball or other objects. Such behavior is common in people. Other animals like it too — that's why a dog fetches a stick, or a cat bats at toys. Play is an enjoyable way to pass the time. A new study finds that it's not just mammals that like to play. Bumblebees (大黄蜂) do it too, making them the first insects known to play. In the study, Hiruni Samadi Galpayage Dona, an insect expert, did an experiment using 200 untrained bumblebees to see if they might play. Of those, 45 would be marked with a number when they emerged as adults. A pathway was set up from the bumblebees' nest to a feeding area. One side contained small wooden balls that rolled. The other side had the same number of balls, but they were stuck to the floor. Half balls on each side were colored balls. The rest were left unpainted. For three hours a day over 18 days, Galpayage Dona found bumblebees weren't so interested in the side where the balls didn't move, but they explored the side areas and interacted with the balls. Once they managed to roll a ball, they strongly preferred that side. They returned, climbing on the balls and rolling them around. She also found bumblebees preferred certain colors of balls. “There's something about the mobility that is more interesting for the bumblebees than just colored objects，” Galpayage Dona says. In another experiment, she sometimes left the balls out overnight. “When I came in the next day, I would always find some bumblebees rolling the balls.” As with mammals, the bumblebees who played the most were the younger ones. Their play tapered_off as they got older. The scientists say it's not clear why the bumblebees roll the balls or whether they enjoy it. But the experiment raises important questions about how the insects' minds work and whether they have feelings. 语篇解读：本文是一篇说明文。一项新的研究发现，不仅仅是哺乳动物喜欢玩耍，大黄蜂也喜欢，这使它们成为已知的喜欢玩耍的第一种昆虫。 5．How does the author introduce the topic? A．By describing the fun of play. B．By analyzing reasons for boredom. C．By introducing similar phenomena. D．By presenting animals' cute images. 解析：选C　推理判断题。根据第一段内容可知，作者介绍了人类和一些动物是相似的，都会通过玩耍来消磨时间，以此来引出文章主题——大黄蜂也这样做。由此推知，作者通过介绍相似现象来引出文章主题的。 6．What did the researcher do in the experiment? A．She trained bumblebees to play balls. B．She put small balls along the pathway. C．She set up a pathway in bumblebees' nest. D．She rewarded the bumblebees with rolled balls. 解析：选B　细节理解题。根据第三段中“A pathway was set up ... small wooden balls that rolled.”可知，在实验中，研究者把小球放在小路上。 7．What does the underlined part “tapered off” probably mean in paragraph 5? A．Mattered.　　　　　　　 B．Helped. C．Decreased. D．Emerged. 解析：选C　词义猜测题。根据画线词上文“As with mammals ... younger ones.”和画线词所在句可知，和哺乳动物一样，最喜欢玩耍的是较年轻的大黄蜂，这说明那些岁数大的黄蜂玩得较少。由此推知，随着年龄的增长，大黄蜂玩得次数减少。由此推知，画线短语“tapered off”意为“减少”，与C项意思相近。 8．What can be the best title for the text? A．Bumblebees Prefer Shape to Color B．Balls Are Bumblebees' Favorite Toys C．Playing with Objects Is Animals' Second Nature D．Bumblebees Are the First Insects Known to Play 解析：选D　标题归纳题。通读全文，尤其是第一段中“A new study finds ... first insects known to play.”可知，文章主要讲述了大黄蜂是已知的喜欢玩耍的第一种昆虫。由此可知，D项适合做文章标题。 Ⅱ.阅读七选五 (2024·临沂模拟) Many humans have a mental number line that often puts smaller numbers on the left and bigger numbers on the right — if asked to organize several bunches of grapes by size, you'd likely line them up by increasing number of grapes from left to right.Like many humans, honeybees seem to prefer their numbers ordered from left to right, a new study claims.__9__ Researchers reported their findings October 17 in the Proceedings of the National Academy of Sciences. Martin Giurfa, a biologist, tested 134 honeybees on their number－ordering abilities.First Giurfa had to teach his bee pupils to recognize numbers.Using sugar water, he guided honeybees into a testing bee house built from a repurposed wine box.For each bee, he hung a panel on the back of the box with a certain number of symbols on it — one, three or five.__10__ So they'd learn to associate the number with food.By varying what the symbols looked like between visits, he ensured the bees were learning the number itself and not certain shapes or arrangements. __11__ Giurfa removed the training panel and set up two mirror－image panels, one on the left wall of the box and one on the right.These new panels either had the same number of symbols as the training panel, fewer symbols or more.Which panel did the bees fly to — left or right? “__12__” Giurfa says.Of the bees trained on “one”， 72 percent flew to the “three” panel to the right, but of the bees trained on “five”， 73 percent went to the “three” panel to the left.“That's exactly the concept of the mental number line，” Giurfa says. Though some cognitive (认知的) powers seem to be uniquely human, Giurfa thinks there is danger in dismissing the abilities of animals.“We are different from animals in some aspects，” he says, “but we are very similar in others.__13__” A．Then he fed them the sugar water. B．It depends on the reference number. C．However, not everyone is convinced. D．After 30' trips to the box, it was time for a test. E．It suggests that honeybees have a “mental number line”． F．Giurfa thinks bees and chicks have inborn mental number lines. G．Denying this similarity will not help us understand what we are. 语篇解读：本文是一篇说明文。新的研究称，像许多人一样，蜜蜂也有数字排序能力，而且它们似乎更喜欢从左到右排列数字。 9．选E　由本文首句及空前一句可知，人类的大脑中有“a mental number line”，习惯性把数字从小到大按从左往右的顺序排列，研究表明蜜蜂也和人类一样，由此推测，蜜蜂大脑中也有这样一个“a mental number line”，所以E项符合语境。 10．选A　根据空前“Using sugar water, he guided ...three or five.”及空后“So they'd learn to associate the number with food.”可知，空前讲的是Giurfa在板子上写上数字教蜜蜂认识数字，空后说明蜜蜂学会把数字和食物联系起来，由此推测，空处应该是描述喂食物，结合前面“Using sugar water”可知，A项符合语境。 11．选D　根据上一段末句可知，实验过程中训练蜜蜂多次，结合下文“Giurfa removed ...the bees fly to — left or right？”对蜜蜂进行测试，由此可知，D项承上启下，符合语境，其中trips呼应上文中的visits。 12．选B　根据下文“Of the bees trained ...the ‘three’ panel to the left.”可知，蜜蜂会飞到哪块板上，是以它们训练时的数字为参数的。由此可知，B项契合下文。 13．选G　根据上文“Though some cognitive(认知的) powers ...we are very similar in others.”可知，Giurfa认为，科学证明有些动物的认知能力和人类很相似，这不容忽视，不应该否认，由此可知，G项“否认动物和人类的相似性对我们没有好处”符合语境，其中this similarity呼应上一句中的“we are very similar in others”， Denying(否认)与上文dismissing(驳回，不考虑)意思相近。 Ⅲ.完形填空 (2024·深圳调研)Natalie and Callie, both 13 years old, started raising monarch butterflies (黑脉金斑蝶)for fun in 2020.But after realizing monarch butterflies were an endangered species, their__14__soon turned into a serious mission. They learned that the population of monarch butterflies had __15__ since the early 1990s, due to habitat __16__ and widespread use of chemicals, which made the milkweeds monarch butterflies __17__ for their main diet dangerous to eat. So the girls teamed up with a national nonprofit group to plant a native garden __18__ for the monarch butterflies.The garden grew organic milkweeds that __19__ and kept the butterflies.To help __20__ the locals to sustain the monarch butterfly's population, they created an exhibition about monarch butterflies in the local library.They also wanted to put up an educational sign in town, but it __21__ a lot.To cover the expense, they set up a stand at the Farmers Market to sell their __22__ milkweeds for people to plant.Although the fundraising days were __23__， they finally succeeded in earning enough money with their hard work and people's support. The team has won the Silver Award for their __24__ of taking care of these butterflies, but they are not __25__ with their work.“Our next step is to cut down on the use of __26__ to guarantee a safe environment for the monarch butterflies，” said Natalie.In the award ceremony, their teacher Brian __27__， “I am so proud of them for their constant __28__.” 语篇解读：本文是一篇记叙文。文章讲述了13岁的Natalie和Callie保护黑脉金斑蝶的故事。 14．A.dream　　　　　　 B．hobby C．career D．decision 解析：选B　根据上文中的“started raising monarch butterflies (黑脉金斑蝶) for fun”可知，Natalie 和Callie之前养黑脉金斑蝶只是一种业余爱好(hobby)。 15．A.doubled B．aged C．declined D．exploded 解析：选C　根据上文中的“monarch butterflies were an endangered species”可知，黑脉金斑蝶的数量在下降(declined)。 16．A.management B．assessment C．selection D．destruction 解析：选D　根据语境可知，此处讲的是黑脉金斑蝶数量下降的原因。根据空后的“widespread use of chemicals”和常识可知，黑脉金斑蝶数量下降的原因之一是栖息地遭到了破坏(destruction)。 17．A.relied on B．kept off C．broke down D．gave away 解析：选A　根据空后的“their main diet dangerous to eat”可知，黑脉金斑蝶依赖(relied on)马利筋草作为其主要食物。 18．A.partly B．secretly C．rarely D．specially 解析：选D　根据下文中的“grew organic milkweeds”可知，两个女孩与国家级非营利性团体在当地种了一个专门(specially)针对黑脉金斑蝶的花园。 19．A.attracted B．protected C．monitored D．trapped 解析：选A　上文中讲到了马利筋草是黑脉金斑蝶的主要食物。再结合上文中的“grew organic milkweeds”可知，她们在花园里种植了有机马利筋草。有机的马利筋草可以吸引(attracted)黑脉金斑蝶。故选A项。 20．A.employ B．educate C．force D．limit 解析：选B　根据语境和常识可知，她们在当地图书馆举办展览是为了教育(educate)当地人维持黑脉金斑蝶的数量。 21．A.meant B．cost C．changed D．hurt 解析：选B　根据下文中的“To cover the expense” 和“the fundraising”可知，在镇里搭建教育标牌花费(cost)较大。 22．A.dry B．medical C．healthy D．wild 解析：选C　此处呼应上文中的“organic milkweeds”，因此这些马利筋草是健康的(healthy)。 23．A.pleasing B．light C．long D．disappointing 解析：选C　根据下文中的“they finally succeeded in earning enough money”可以推断，筹款活动尽管花费的时间有点儿长(long)，但效果还不错。 24．A.project B．concept C．schedule D．assignment 解析：选A　根据语境和上文中的“a serious mission”可知，此处指的是她们保护黑脉金斑蝶的项目(project)。 25．A.concerned B．connected C．finished D．occupied 解析：选C　根据下文中的“Our next step is to cut down on the use”可知，她们保护黑脉金斑蝶的行动并没有结束(finished)。 26．A.chemicals B．time C．funds D．energy 解析：选A　根据上文中的“widespread use of chemicals”和下文中的“guarantee a safe environment for the monarch butterflies”可知，她们的下一步是要减少化学品(chemicals)的使用，以确保黑脉金斑蝶的环境安全。 27．A.quoted B．continued C．replied D．commented 解析：选D　根据下文中的“I am so proud of them for their constant________ ”可知，这是老师对她们的评论(commented)。 28．A.donations B．support C．patience D．efforts 解析：选D　根据全文可知，Natalie和Callie一直在为保护黑脉金斑蝶而努力(efforts)，老师也为此而感到骄傲。 学科网（北京）股份有限公司 $$