Unit 5 课时1 Starting out & Understanding ideas(Reading I) （分层作业）英语新教材外研版八年级下册

**基本信息** 练习围绕Unit 5 "Looking into nature"，采用"核心知识速记+四阶分层"设计，从词汇基础到语篇综合，梯度清晰，适配新授课知识巩固与思维培养。 **分层设计** |层次|知识覆盖|设计特色| |----|----------|----------| |基础达标|词汇短语默写|通过音标提示强化单词拼写，夯实语言能力基础| |能力提升|词形变化与句型应用|结合单元主题语境，训练语法转换与句子表达，提升语言应用能力| |拓展培优|语篇理解（完形/阅读）|以自然现象为情境，培养语篇分析与信息提取能力，渗透文化意识| |思维进阶|综合语篇与任务型阅读|通过七选五和开放问答，训练逻辑推理与问题解决，发展思维品质|

Unit 5 Looking into nature 课时1 Starting out& Understanding ideas(Reading I) 分层作业 核心知识速记 01基础达标 02能力提升 03拓展培优 04思维进阶 词汇 dinosaur /ˈdaɪnəsɔː/n. 恐龙　　　　　　　　　 feather /ˈfeðə/n. 羽毛，翎 feather-covered /ˈfeðə ˌkʌvəd/adj. 羽毛覆盖的　　lizard /ˈlɪzəd/n. 蜥蜴 amber /ˈæmbə/n. 琥珀　　　　　　　　　　　whether /ˈweðə/conj. 是否 (用于表示选择或对某事不确定) northern /ˈnɔːðən/adj. 北部的　　　　　　　　 species /ˈspiːʃiːz/n. 物种 unknown /ˌʌnˈnəʊn/adj. 不知道的，未知的　　 African /ˈæfrɪkən/adj. 非洲的；非洲人的 belief /bɪˈliːf/n. 观点　　　　　　　　　　 fully /ˈfʊli/adv. 完全地；充分地；彻底地 unlock /ˌʌnˈlɒk/v. 揭开 短语 look into 调查 have sth in common有共同之处 run around 四处跑 look for 寻找 hundreds of 数百,成百上千 look like看起来像 thanks to多号,由于 a piece of...一块/片/张...... on earth在地球上 no longer 不再 in the future 将来 over time随着时间的推移 more than 超过,多于 used to do sth过去常常某事 come from来自 the discovery of.........的发现 put effort into努力做...... unlock the secrets of sth揭开某事的秘密 词形变化 northern adj.北部的-north n.北,北方adj.北方的 unknown adj.不知道的，未知的-反义词:known adj.已知的 African adj.非洲的;非洲人的-Africa n.非洲 fully adv.完全地;充分地;彻底地-full adj.满的，完全的 unlock v.揭开- lock v.把......锁起来 belief n. 观点-believe v. 相信，认为 discovery n.发现-discover v. 发现 一、单词默写。 __________ /ˈdaɪnəsɔː/ n. 恐龙　　　 __________ /ˈfeðə/ n. 羽毛，翎 __________ /ˈfeðə ˌkʌvəd/ adj. 羽毛覆盖的　　　__________ /ˈlɪzəd/ n. 蜥蜴 __________ /ˈæmbə/ n. 琥珀　　　 __________ /ˈweðə/ conj. 是否 __________ /ˈnɔːðən/ adj. 北部的　　　 __________ /ˈspiːʃiːz/ n. 物种 __________ /ˌʌnˈnəʊn /adj. 未知的　　　 __________ /ˈæfrɪkən /adj. 非洲的 __________ /bɪˈliːf/ n. 观点　　　 __________ /ˈfʊli/ adv. 完全地 __________ /ˌʌnˈlɒk/ v. 揭开 答案: dinosaur　feather　feather-covered　lizard　amber　whether northern　species　unknown　African　belief　fully unlock 二、词组默写。 __________ 调查　　　 __________ 有共同之处 __________ 四处跑　　　 __________ 寻找 __________ 数百，成百上千　　__________ 看起来像 __________ 多亏，由于　　　 __________ 一块 / 片 / 张...... __________ 在地球上　　　 __________ 不再 __________ 将来　　　 __________ 随着时间的推移 __________ 超过，多于　　　 __________ 过去常常某事 __________ 来自　　　 __________ ......... 的发现 __________ 努力做......　　　 __________ 揭开某事的秘密 答案：look into　have sth in common　run around　look for　hundreds of　look like thanks to　a piece of...　on earth　no longer　in the future　over time more than　used to do sth　come from　the discovery of...　put effort into　unlock the secrets of sth 一、用所给词的正确形式填空。 1．The Greens travelled to the forest ________ (explore) the natural world. 【答案】to explore 【详解】句意：格林一家前往森林去探索自然世界。句中谓语动词是travelled，是句子的核心动作。空格处填入to explore，构成“to+动词原形”结构，在句中作目的状语，用来解释说明“前往森林”这个动作的目的是什么——为了“探索自然世界”。故填to explore。 2．The ________ (believe) that dinosaurs could fly has been proved by new research. 【答案】belief 【详解】句意：恐龙会飞的信念已经被新的研究证实。此处需要名词作句子的主语，believe是动词“相信”，其名词形式是belief，意为“信念、看法”。 3．I have ________ (full) understood the problem, and I can solve it in ten minutes. 【答案】fully 【详解】句意：我已经完全理解了这个问题，并且能在十分钟内解决它。understood是动词，需要副词来修饰，full是形容词，其副词形式为fully，表示“完全地、充分地”。故填fully。 4．This new evidence (证据) could ________ (lock) the secret of the old case. 【答案】unlock 【详解】句意：这个新证据可能解开这起旧案的秘密。句中could是情态动词，情态动词后必须接动词原形；“新证据”的作用通常是“解开”案件的秘密，动词lock的否定式unlock表示“解开”。 5．Suqian, a city with rich culture, is in the ________ (north) part of Jiangsu. 【答案】northern 【详解】句意：宿迁，一个文化底蕴深厚的城市，位于江苏的北部。空格处需填形容词修饰名词“part”作定语。所给单词“north”意为“北方”，是名词，其对应的形容词形式为“northern”。故填northern。 6．Zong Qinghou, the founder (创始人) of Wahaha Group, passed away on 25th February 2024, due to a kind of ________ (known) sickness. 【答案】unknown 【详解】句意：娃哈哈集团创始人宗庆后于2024年2月25日因一种‌未知疾病‌去世。根据提示可知，此处表达“未知的”，know“知道”，此处应改为其形容词unknown“未知的”。故填unknown。 7．Luckily, many traditional art forms like Wuxi Opera are passed on and stay ________ (live). 【答案】alive 【详解】句意：幸运的是，像锡剧这样的许多传统艺术形式被传承下来，保持着活力。 live“活的；现场的”，是形容词。句中stay是系动词，后接表语表示状态，此处需用live的同根形容词alive表示“有活力的；存在的”，用来体现传统艺术形式依然鲜活、得以延续的状态。故填alive。 8．Let’s go to the zoo. There are some new animals from some ________ (Africa) countries. 【答案】African 【详解】句意：我们去动物园吧。有一些来自非洲国家的新动物。括号内提示词为Africa，此处需要形容词修饰名词countries，因此将Africa变为形容词形式African，表示 “非洲的”，故填African。 9．Could you please give me some ________ (piece) of paper? 【答案】pieces 【详解】句意：你能给我几张纸吗？some后接可数名词复数或不可数名词。piece是可数名词，意为“张、片”，在some后需变复数形式pieces，构成固定搭配some pieces of paper。 10．The ________ (discover) of new things makes the world change fast. 【答案】discovery 【详解】句意：新事物的发现让世界变化迅速。根据句子结构，这里需要一个名词作主语。discover是动词，其名词形式是discovery，The discovery of new things表示“新事物的发现”，故填discovery。 二、完成句子 11．琥珀可以告诉我们恐龙是否有羽毛。 Amber ________ tell us ________ dinosaurs had feathers. 【答案】 can whether/if 【详解】原句中“可以”和“是否”为关键词，表示“可以”的词为can，情态动词，陈述客观事实用一般现在时，can无人称变化；whether/if均意为“是否”，宾语从句连接词。 12．多亏了一块琥珀，科学家们现在知道这个观点是错误。 ________ ________ a piece of amber, scientists now know that this idea is wrong. 【答案】 Thanks to 【详解】原句关键词为“多亏了”，固定短语“Thanks to”表示“由于、多亏”。 13．它们还帮助我们理解地球上的生物一直在变化。 They also help us understand that life ________ ________ __________ has always changed. 【答案】 on the earth 【详解】根据中英文对照可知，此处缺少“地球上”，on the earth表示“在地球上”，符合语境。 14．研究表明，他们完全是一种全新的物种。 Research shows that they are ________ ________ ________ ________ . 【答案】 a completely new species 【详解】原句的核心表达是“一种全新的物种”，对应的表达为a completely new species。 15．随着一声愤怒的吼叫，它张开嘴，举起覆盖着美丽羽毛的手臂。 ________ an angry cry, it opens its mouth, ________ ________ beautiful feather-covered arms. 【答案】 With raising its 【详解】原句关键词为“随着” “举起” “它的”，with表示“随着”，raise表示“举起”，its表示“它的”。opens表示时态为一般现在时，句中已有谓语动词，因此raise用非谓语形式，与主语是主动关系，raising符合句意，句首字母需大写。故填With；raising；its。 16．别为他担心了。他不再是小孩子了。 Don’t worry about him. He is ________ ________ a child. 【答案】 no longer 【详解】根据中英文对照可知，此处缺少“不再”。no longer是固定短语，意为“不再”，可直接放在be动词后，符合本题结构。故填no；longer。 17．我表姐大学一毕业就去找工作。 My cousin will ________ ________ a job as soon as she finishes college. 【答案】 look for 【详解】根据中英文对照可知，此处缺“寻找”，此句时态为一般将来时，look for“寻找”符合语境，放于will之后用其动词原形look。故填look for。 18．《超级沟通者：如何解锁连接的秘密语言》是一本好读物。 Supercommunicators: How to ________ ________ ________ Language of Connection is a good read. 【答案】 Unlock the Secret 【详解】根据中英文对照可知，此处缺“解锁……的秘密”，unlock为“解开，解锁”，放于不定式to之后用其动词原形，the secret为“秘密”，符合语境；属于书名，所以其首字母要大写。故填Unlock；the；Secret。 19．我和Peter过去对打乒乓球感兴趣。 Peter and I ________ ________ be interested in playing ping-pong. 【答案】 used to 【详解】根据中英文对照可知，此处缺少“过去常常”。used to do sth“过去常常做某事”，used to没有人称和数的变化。故填used；to。 20．这个机器人移动时能清除其路线上的物体。 This robot can clear things ________ ________ ________ when moving. 【答案】 in its way 【详解】根据中英文对照可知，此处缺少“其路线上”的表达。固定搭配“in one’s way”表示“挡在……的路上、在……的行进路线上”，主语是“This robot”，对应的物主代词是its，“路线” 译为“way”。故填in；its；way。 一、完形填空 Have you ever seen a group of wild geese (大雁) flying south for the winter? On an autumn day, my mother and I took a walk by the lake. As we looked at the 1 , a group of wild geese suddenly appeared. They headed south for the winter in the 2 of a “V”. I was caught by the surprising sight. My mother 3 the secrets of the animal migration (迁徙) for me. One of the most surprising examples is the gray whales which have the 4 yearly trips, covering almost 20,000 kilometres. These whales 5 landmarks near the sea to move to the north or south. When migrating south in winter, they keep the beach on their left. When migrating north in spring, they keep the coast on their   6 . What’s more, my mother explained that the migration of birds 7 the Earth’s magnetic field (磁场). These birds know how to use the magnetic field to 8 when the sun or stars are covered by clouds. Learning about animal migration makes me realise 9 magical the natural world is. It also makes me understand the importance of getting knowledge and understanding the world around us. We should never stop exploring and questioning, because there is always something 10 to discover. The natural world is full of wonders, and we should do our best to enjoy and protect it. 1．A．species B．newspaper C．sky D．writing 2．A．style B．length C．size D．shape 3．A．unlocked B．suggested C．advised D．compared 4．A．darkest B．hardest C．longest D．nearest 5．A．realise B．use C．protect D．benefit 6．A．left B．right C．front D．back 7．A．lives on B．feeds on C．works on D．depends on 8．A．rest B．wait C．travel D．hide 9．A．what B．how C．why D．when 10．A．unknown B．unhappy C．uncommon D．unable 【答案】 1．C 2．D 3．A 4．C 5．B 6．B 7．D 8．C 9．B 10．A 【导语】本文是一篇议论文。作者通过和母亲观察大雁南飞，了解到动物迁徙（如灰鲸和鸟类）的奇妙现象，从而感悟到自然的神奇、知识的重要性以及探索与保护自然的必要性。 1．句意：当我们仰望天空时，一群大雁突然出现了。 species物种；newspaper报纸；sky天空；writing写作。根据“a group of wild geese suddenly appeared”和常识可知，大雁出现在“天空”中。look at the sky“仰望天空”。故选C。 2．句意：它们以“V”字形南飞过冬。 style风格；length长度；size尺寸；shape形状。根据“in the…of a ‘V’”可知，大雁排成“V”字“形”。in the shape of“呈……形状”。故选D。 3．句意：我的母亲为我揭开了动物迁徙的秘密。 unlocked揭开（秘密）；suggested建议；advised建议；compared比较。根据“the secrets of the animal migration for me”可知，母亲“揭开”了秘密。unlock the secrets“揭开秘密”。故选A。 4．句意：最令人惊讶的例子之一是灰鲸，它们有最长的年度旅程，覆盖近两万公里。 darkest最黑暗的；hardest最困难的；longest最长的；nearest最近的。根据“covering almost 20,000 kilometres”可知，这是“最长的”旅程。故选C。 5．句意：这些鲸鱼利用海岸附近的地标来向南或北移动。 realise意识到；use使用；protect保护；benefit受益。根据“landmarks near the sea to move”可知，它们“利用”地标来导航。故选B。 6．句意：当春天向北迁徙时，它们让海岸保持在它们的右边。 left左边；right右边；front前面；back后面。根据“When migrating south in winter, they keep the beach on their left.”可知，向南时左靠岸，那么向北时方向相反，应是右靠岸。故选B。 7．句意：此外，我的母亲解释说，鸟类的迁徙依赖于地球的磁场。 lives on以……为生；feeds on以……为食；works on致力于；depends on依赖于。根据“the migration of birds...the Earth’s magnetic field”可知，鸟类的迁徙“依赖于”地球磁场来导航。故选D。 8．句意：这些鸟知道如何利用磁场来旅行，即使太阳或星星被云层遮盖。 rest休息；wait等待；travel旅行，移动；hide隐藏。根据“when the sun or stars are covered by clouds”可知，磁场帮助它们在无法利用天体时继续“飞行/移动”。故选C。 9．句意：了解动物迁徙让我意识到自然界是多么神奇。 what什么；how多么；why为什么；when何时。根据“…magical the natural world is”可知，这是一个感叹句结构，how + adj. + 主语 + 谓语，表示“多么……”。故选B。 10．句意：我们永远不应该停止探索和质疑，因为总有一些未知的东西等待被发现。 unknown未知的；unhappy不快乐的；uncommon不寻常的；unable不能的。根据“there is always something...to discover”可知，总有“未知的”事物待发现。故选A。 二、阅读理解 A Animals grow old, just like humans. What do you think of older wild animals? Are they important to their groups? A new study has found that protecting older wild animals is very important because they have knowledge to help other members survive (生存). ▲When older birds have baby birds, they are better at providing food and finding a good place to live. This makes it more likely for the babies to survive. Older elephants are good at remembering which animals are friendly and which ones aren’t. They are also better at knowing possible dangers. Grandmother orcas (killer whales) use their knowledge to help their families find food when there’s not much around. Older animals face serious problems in some parts of the world. For example, fishing has caused the number of older fish to fall greatly. In some places, because poaching is common, older animals are at risk more than young ones. The researchers, from Charles Darwin University in Australia, said humans must do more to make sure that enough old animals survive. They’ve asked the International Union for Conservation of Nature to help researchers come up with ways to protect those at risk. They also said that we should try to stop catching too many old fish to protect them. 1．How does the writer lead into the topic? A．By telling a joke. B．By sharing a story. C．By asking questions. D．By giving examples. 2．Which of the following can be put in the blank “ ▲ ” in Paragraph 2? A．Older animals are at risk now and their numbers fall. B．Older animals are better at finding good places to live. C．Older animals can help their members in many ways. D．There are many ways to protect older animals in danger. 3．What does the underlined word “poaching” in Paragraph 3 mean? A．feeding animals B．catching animals C．studying animals D．protecting animals 4．What is the purpose of the passage? A．To show the study of Australian researchers. B．To discuss how animals grow old in the wild. C．To show why old animals need special protection. D．To compare different ways of protecting animals. 【答案】1．C 2．C 3．B 4．C 【导语】本文通过科学研究阐述了年长野生动物在种群生存中的关键作用，揭示其生存危机，并呼吁加强对老年动物的保护。 1．根据“What do you think of older wild animals? Are they important to their groups?”可知，文章开头通过提出“你如何看待年老的野生动物？它们对群体重要吗？”这样的问题来引出下文，所以作者是通过提问开始这篇文章的。 2．根据“When older birds have baby birds, they are better at providing food and finding a good place to live. This makes it more likely for the babies to survive. Older elephants...”可知，空处后文说明年长动物如何提升种群生存率，所以空处应表达“年老的动物可以在很多方面帮助它们的种群”。 3．根据“For example, fishing has caused the number of older fish to fall greatly.”及“...older animals are at risk more than young ones.”可知，捕鱼导致老年鱼数量大幅下降，年老的动物更处于危险中，可推断poaching指“非法捕猎”。 4．根据“A new study has found that protecting older wild animals is very important because they have knowledge to help other members survive (生存).”可知，本文通过科学研究阐述了年长野生动物在种群生存中的关键作用，揭示其生存危机，并呼吁加强对老年动物的保护。 B “What is that?” “It looks like a fossil (化石).” “It looks part-human.” “It can’t be...” The words “animal” and “human” were discussed by the archaeologists (考古学家). “What if it’s neither human nor animal? What if it’s something we haven’t discovered yet?” I said. There was silence. Paul said, “I think you might be right, Jack. It isn’t an animal we know of. It’s not human. What else could it be?” The other scientists headed back to their computers to begin researching. Paul and I continued to look at the fossil closely. It seemed that the creature was smaller than a human, and could stand on two legs. The next morning, I ran to the fossil. The fossil was different! Now it looked like a small bear. “What happened?” I asked. Everyone had a puzzled look on their faces and no one had an answer. When night fell, we set up a rotation (轮班) to make sure two of us were with the fossil at all times. All was quiet for my watch (值班) at midnight. In the morning, I went to the fossil. It had changed again! This time it looked like a sheep. No one had seen or heard anything on their watch. How and why did it keep changing? To this day, no one has found the answer to the changes. 1．What were the archaeologists discussing? A．How old the fossil was. B．What animal’s fossil it was. C．Whether it was a fossil of a human or an animal. D．What if the creature was something they hadn’t discovered. 2．After the other scientists left, Paul and Jack ________. A．continued to talk B．ran a test together C．looked at the fossil closely D．worked on their computers 3．The underlined word “puzzled” means “________” in Chinese. A．尴尬的 B．气愤的 C．难过的 D．疑惑的 4．What situation are the archaeologists facing? A．The fossil went missing. B．The fossil kept changing. C．The fossil was strange in shape. D．The fossil made the scientists dream a lot. 【答案】1．C 2．C 3．D 4．B 【导语】本文主要介绍了考古学家针对一块奇怪的化石进行的讨论以及化石的变化。 1．细节理解题。根据“The words ‘animal’ and ‘human’ were discussed by the archaeologists (考古学家).”可知，考古学家们正在争论它是人类化石还是动物化石。故选C。 2．细节理解题。根据“Paul and I continued to look at the fossil closely.”可知，其他科学家离开后，保罗和杰克仔细观察了化石。故选C。 3．词句猜测题。根据“... and no one had an answer.”可知，没有人有答案，因此此处表示每个人都很疑惑，画线单词puzzled意为“疑惑的”。故选D。 4．细节理解题。根据“How and why did it keep changing? To this day, no one has found the answer to the changes.”可知，考古学家面临着化石一直在变的局面。故选B。 三、七选五 根据短文内容，从选项中选出能填入文中空白处的最佳选项。选项中有两项为多余选项。 Amber is a very special material. It can preserve ancient life for millions of years. 1 In a piece of amber from Africa, scientists found 13 ants. Research shows that these ants came from the Northern Hemisphere. 2 Before this, people thought ants only lived in the north. 3 This shows that life on Earth has changed over time. Amber is like a window on the past. 4 Scientists are still studying amber. They want to find more unknown species and unlock more secrets of nature. 5 A．This discovery fully changed our beliefs about the history of ants. B．It helps us understand the world long ago. C．Amber is only found in Africa. D．It can help us unlock the secrets of nature. E．Now we know ants also lived in Africa millions of years ago. F．Ants are the oldest species on Earth. G．Every new discovery teaches us something new about nature. 【答案】1．D 2．A 3．E 4．B 5．G 【导语】本文是一篇说明文，介绍了琥珀在保存古生物、揭示自然奥秘方面的作用，并通过相关发现展现其科学价值。 1．原文前句提到“Amber is a…millions of years.”，强调琥珀的特殊价值。选项D承接上文，进一步说明琥珀能帮助我们揭开自然的秘密 2．横线前后句指出“In a piece of amber from Africa…people thought ants only lived in the north.”。选项A既总结了这一发现的意义，又与后句“之前人们认为蚂蚁只生活在北方”形成对比。 3．原文后句提到“This shows that life on Earth has changed over time.”，说明这一发现揭示了地球生命的演变。选项E直接点明研究结论，为后句“生命随时间演变”提供了具体例证。 4．原文前句“Amber is like a window on the past.”，将琥珀比作通往过去的窗口。选项B解释了琥珀作为“窗口”的作用是帮助我们了解很久以前的世界。 5．原文前句提到“Scientists are still…more secrets of nature.”，说明科学家仍在持续研究琥珀。选项G总结了研究的意义，与前文“解锁更多自然秘密”的目标相呼应。 四、任务型阅读 阅读下面短文，简略回答问题。 Wang Qiang is a plant scientist. He studies plants in the pan-Himalayan region (泛喜马拉雅地区). Zhang Xinyu, a student, had a talk with Wang. Zhang: Why do you study plants in the pan-Himalayan region? Wang: The Himalayas have very high mountains and very deep valleys (山谷). This makes it a special home for plants. 2/3 of China’s plants grow there, and many grow only in that place. By studying them, we learn about most of China’s plants. Some plants there have cool ways to live in hard places. Snow lotuses cover their leaves like a little greenhouse to stay warm. Purple-blue flowers reflect (反射) sunlight to help protect their DNA．These show us how nature solves problems. Zhang: What is it like to work in the wild? Wang: It’s hard but exciting. Once in Xizang, I tried to collect a small orchid (兰花). Suddenly, a group of local scoliid wasps (土蜂) flew at me. The orchid’s flowers looked like wasp wings, so the insects thought I was hurting their friends. I learned that plants can be very smart. Zhang: Why do you do this work? Wang: Plants are important. Some medicines come from plants and save people’s lives. The Himalayas have 20,000 kinds of plants. I hope to find more to help people. This gives me strength. 1．What makes the Himalayas a special home for plants? ______________________________________________ 2．How do purple-blue flowers look after their DNA? ______________________________________________ 3．What did Wang learn after the scoliid wasps flew at him? ______________________________________________ 4．What gives Wang the strength to do the work? ______________________________________________ 5．What question do you want to ask Wang? (Your question should be different from Zhang’s.) ______________________________________________ 【答案】1．Very high mountains and very deep valleys. 2．They reflect sunlight. / By reflecting sunlight. 3．Plants can be very smart. 4．His hope to find more plants to help people. 5．Where do you live in the pan-Himalayan region? / Does your family support your work? / ...（答案不唯一，合理即可） 【导语】本文以对话形式呈现，学生张新宇采访植物科学家王强，了解他在泛喜马拉雅地区研究植物的原因、野外工作经历以及从事这份工作的初心。 1．根据文中“The Himalayas have very high mountains and very deep valleys. This makes it a special home for plants.”，可直接提取原文信息作答。 2．根据文中“Purple-blue flowers reflect sunlight to help protect their DNA.”，可直接提取原文信息作答。 3．根据文末“I learned that plants can be very smart.”，可直接提取原文信息作答。 4．根据文中“I hope to find more to help people. This gives me strength.”可知，作者希望能做更多事去帮助他人，这给予了他力量，整合原文信息得出答案。 5．开放性回答。参考答案为：Where do you live in the pan-Himalayan region? / Does your family support your work? / ...（答案不唯一，合理即可） 1 / 7 学科网（北京）股份有限公司 $ Unit 5 Looking into nature 课时1 Starting out& Understanding ideas(Reading I) 分层作业 核心知识速记 01基础达标 02能力提升 03拓展培优 04思维进阶 词汇 dinosaur /ˈdaɪnəsɔː/n. 恐龙　　　　　　　　　 feather /ˈfeðə/n. 羽毛，翎 feather-covered /ˈfeðə ˌkʌvəd/adj. 羽毛覆盖的　　lizard /ˈlɪzəd/n. 蜥蜴 amber /ˈæmbə/n. 琥珀　　　　　　　　　　　whether /ˈweðə/conj. 是否 (用于表示选择或对某事不确定) northern /ˈnɔːðən/adj. 北部的　　　　　　　　 species /ˈspiːʃiːz/n. 物种 unknown /ˌʌnˈnəʊn/adj. 不知道的，未知的　　 African /ˈæfrɪkən/adj. 非洲的；非洲人的 belief /bɪˈliːf/n. 观点　　　　　　　　　　 fully /ˈfʊli/adv. 完全地；充分地；彻底地 unlock /ˌʌnˈlɒk/v. 揭开 短语 look into 调查 have sth in common有共同之处 run around 四处跑 look for 寻找 hundreds of 数百,成百上千 look like看起来像 thanks to多号,由于 a piece of...一块/片/张...... on earth在地球上 no longer 不再 in the future 将来 over time随着时间的推移 more than 超过,多于 used to do sth过去常常某事 come from来自 the discovery of.........的发现 put effort into努力做...... unlock the secrets of sth揭开某事的秘密 词形变化 northern adj.北部的-north n.北,北方adj.北方的 unknown adj.不知道的，未知的-反义词:known adj.已知的 African adj.非洲的;非洲人的-Africa n.非洲 fully adv.完全地;充分地;彻底地-full adj.满的，完全的 unlock v.揭开- lock v.把......锁起来 belief n. 观点-believe v. 相信，认为 discovery n.发现-discover v. 发现 一、单词默写。 __________ /ˈdaɪnəsɔː/ n. 恐龙　　　 __________ /ˈfeðə/ n. 羽毛，翎 __________ /ˈfeðə ˌkʌvəd/ adj. 羽毛覆盖的　　　__________ /ˈlɪzəd/ n. 蜥蜴 __________ /ˈæmbə/ n. 琥珀　　　 __________ /ˈweðə/ conj. 是否 __________ /ˈnɔːðən/ adj. 北部的　　　 __________ /ˈspiːʃiːz/ n. 物种 __________ /ˌʌnˈnəʊn /adj. 未知的　　　 __________ /ˈæfrɪkən /adj. 非洲的 __________ /bɪˈliːf/ n. 观点　　　 __________ /ˈfʊli/ adv. 完全地 __________ /ˌʌnˈlɒk/ v. 揭开 二、词组默写。 __________ 调查　　　 __________ 有共同之处 __________ 四处跑　　　 __________ 寻找 __________ 数百，成百上千　　__________ 看起来像 __________ 多亏，由于　　　 __________ 一块 / 片 / 张...... __________ 在地球上　　　 __________ 不再 __________ 将来　　　 __________ 随着时间的推移 __________ 超过，多于　　　 __________ 过去常常某事 __________ 来自　　　 __________ ......... 的发现 __________ 努力做......　　　 __________ 揭开某事的秘密 一、用所给词的正确形式填空。 1．The Greens travelled to the forest ________ (explore) the natural world. 2．The ________ (believe) that dinosaurs could fly has been proved by new research. 3．I have ________ (full) understood the problem, and I can solve it in ten minutes. 4．This new evidence (证据) could ________ (lock) the secret of the old case. 5．Suqian, a city with rich culture, is in the ________ (north) part of Jiangsu. 6．Zong Qinghou, the founder (创始人) of Wahaha Group, passed away on 25th February 2024, due to a kind of ________ (known) sickness. 7．Luckily, many traditional art forms like Wuxi Opera are passed on and stay ________ (live). 8．Let’s go to the zoo. There are some new animals from some ________ (Africa) countries. 9．Could you please give me some ________ (piece) of paper? 10．The ________ (discover) of new things makes the world change fast. 二、完成句子 11．琥珀可以告诉我们恐龙是否有羽毛。 Amber ________ tell us ________ dinosaurs had feathers. 12．多亏了一块琥珀，科学家们现在知道这个观点是错误。 ________ ________ a piece of amber, scientists now know that this idea is wrong. 13．它们还帮助我们理解地球上的生物一直在变化。 They also help us understand that life ________ ________ __________ has always changed. 14．研究表明，他们完全是一种全新的物种。 Research shows that they are ________ ________ ________ ________ . 15．随着一声愤怒的吼叫，它张开嘴，举起覆盖着美丽羽毛的手臂。 ________ an angry cry, it opens its mouth, ________ ________ beautiful feather-covered arms. 16．别为他担心了。他不再是小孩子了。 Don’t worry about him. He is ________ ________ a child. 17．我表姐大学一毕业就去找工作。 My cousin will ________ ________ a job as soon as she finishes college. 18．《超级沟通者：如何解锁连接的秘密语言》是一本好读物。 Supercommunicators: How to ________ ________ ________ Language of Connection is a good read. 19．我和Peter过去对打乒乓球感兴趣。 Peter and I ________ ________ be interested in playing ping-pong. 20．这个机器人移动时能清除其路线上的物体。 This robot can clear things ________ ________ ________ when moving. 一、完形填空 Have you ever seen a group of wild geese (大雁) flying south for the winter? On an autumn day, my mother and I took a walk by the lake. As we looked at the 1 , a group of wild geese suddenly appeared. They headed south for the winter in the 2 of a “V”. I was caught by the surprising sight. My mother 3 the secrets of the animal migration (迁徙) for me. One of the most surprising examples is the gray whales which have the 4 yearly trips, covering almost 20,000 kilometres. These whales 5 landmarks near the sea to move to the north or south. When migrating south in winter, they keep the beach on their left. When migrating north in spring, they keep the coast on their   6 . What’s more, my mother explained that the migration of birds 7 the Earth’s magnetic field (磁场). These birds know how to use the magnetic field to 8 when the sun or stars are covered by clouds. Learning about animal migration makes me realise 9 magical the natural world is. It also makes me understand the importance of getting knowledge and understanding the world around us. We should never stop exploring and questioning, because there is always something 10 to discover. The natural world is full of wonders, and we should do our best to enjoy and protect it. 1．A．species B．newspaper C．sky D．writing 2．A．style B．length C．size D．shape 3．A．unlocked B．suggested C．advised D．compared 4．A．darkest B．hardest C．longest D．nearest 5．A．realise B．use C．protect D．benefit 6．A．left B．right C．front D．back 7．A．lives on B．feeds on C．works on D．depends on 8．A．rest B．wait C．travel D．hide 9．A．what B．how C．why D．when 10．A．unknown B．unhappy C．uncommon D．unable 二、阅读理解 A Animals grow old, just like humans. What do you think of older wild animals? Are they important to their groups? A new study has found that protecting older wild animals is very important because they have knowledge to help other members survive (生存). ▲When older birds have baby birds, they are better at providing food and finding a good place to live. This makes it more likely for the babies to survive. Older elephants are good at remembering which animals are friendly and which ones aren’t. They are also better at knowing possible dangers. Grandmother orcas (killer whales) use their knowledge to help their families find food when there’s not much around. Older animals face serious problems in some parts of the world. For example, fishing has caused the number of older fish to fall greatly. In some places, because poaching is common, older animals are at risk more than young ones. The researchers, from Charles Darwin University in Australia, said humans must do more to make sure that enough old animals survive. They’ve asked the International Union for Conservation of Nature to help researchers come up with ways to protect those at risk. They also said that we should try to stop catching too many old fish to protect them. 1．How does the writer lead into the topic? A．By telling a joke. B．By sharing a story. C．By asking questions. D．By giving examples. 2．Which of the following can be put in the blank “ ▲ ” in Paragraph 2? A．Older animals are at risk now and their numbers fall. B．Older animals are better at finding good places to live. C．Older animals can help their members in many ways. D．There are many ways to protect older animals in danger. 3．What does the underlined word “poaching” in Paragraph 3 mean? A．feeding animals B．catching animals C．studying animals D．protecting animals 4．What is the purpose of the passage? A．To show the study of Australian researchers. B．To discuss how animals grow old in the wild. C．To show why old animals need special protection. D．To compare different ways of protecting animals. B “What is that?” “It looks like a fossil (化石).” “It looks part-human.” “It can’t be...” The words “animal” and “human” were discussed by the archaeologists (考古学家). “What if it’s neither human nor animal? What if it’s something we haven’t discovered yet?” I said. There was silence. Paul said, “I think you might be right, Jack. It isn’t an animal we know of. It’s not human. What else could it be?” The other scientists headed back to their computers to begin researching. Paul and I continued to look at the fossil closely. It seemed that the creature was smaller than a human, and could stand on two legs. The next morning, I ran to the fossil. The fossil was different! Now it looked like a small bear. “What happened?” I asked. Everyone had a puzzled look on their faces and no one had an answer. When night fell, we set up a rotation (轮班) to make sure two of us were with the fossil at all times. All was quiet for my watch (值班) at midnight. In the morning, I went to the fossil. It had changed again! This time it looked like a sheep. No one had seen or heard anything on their watch. How and why did it keep changing? To this day, no one has found the answer to the changes. 1．What were the archaeologists discussing? A．How old the fossil was. B．What animal’s fossil it was. C．Whether it was a fossil of a human or an animal. D．What if the creature was something they hadn’t discovered. 2．After the other scientists left, Paul and Jack ________. A．continued to talk B．ran a test together C．looked at the fossil closely D．worked on their computers 3．The underlined word “puzzled” means “________” in Chinese. A．尴尬的 B．气愤的 C．难过的 D．疑惑的 4．What situation are the archaeologists facing? A．The fossil went missing. B．The fossil kept changing. C．The fossil was strange in shape. D．The fossil made the scientists dream a lot. 三、七选五 根据短文内容，从选项中选出能填入文中空白处的最佳选项。选项中有两项为多余选项。 Amber is a very special material. It can preserve ancient life for millions of years. 1 In a piece of amber from Africa, scientists found 13 ants. Research shows that these ants came from the Northern Hemisphere. 2 Before this, people thought ants only lived in the north. 3 This shows that life on Earth has changed over time. Amber is like a window on the past. 4 Scientists are still studying amber. They want to find more unknown species and unlock more secrets of nature. 5 A．This discovery fully changed our beliefs about the history of ants. B．It helps us understand the world long ago. C．Amber is only found in Africa. D．It can help us unlock the secrets of nature. E．Now we know ants also lived in Africa millions of years ago. F．Ants are the oldest species on Earth. G．Every new discovery teaches us something new about nature. 四、任务型阅读 阅读下面短文，简略回答问题。 Wang Qiang is a plant scientist. He studies plants in the pan-Himalayan region (泛喜马拉雅地区). Zhang Xinyu, a student, had a talk with Wang. Zhang: Why do you study plants in the pan-Himalayan region? Wang: The Himalayas have very high mountains and very deep valleys (山谷). This makes it a special home for plants. 2/3 of China’s plants grow there, and many grow only in that place. By studying them, we learn about most of China’s plants. Some plants there have cool ways to live in hard places. Snow lotuses cover their leaves like a little greenhouse to stay warm. Purple-blue flowers reflect (反射) sunlight to help protect their DNA．These show us how nature solves problems. Zhang: What is it like to work in the wild? Wang: It’s hard but exciting. Once in Xizang, I tried to collect a small orchid (兰花). Suddenly, a group of local scoliid wasps (土蜂) flew at me. The orchid’s flowers looked like wasp wings, so the insects thought I was hurting their friends. I learned that plants can be very smart. Zhang: Why do you do this work? Wang: Plants are important. Some medicines come from plants and save people’s lives. The Himalayas have 20,000 kinds of plants. I hope to find more to help people. This gives me strength. 1．What makes the Himalayas a special home for plants? ______________________________________________ 2．How do purple-blue flowers look after their DNA? ______________________________________________ 3．What did Wang learn after the scoliid wasps flew at him? ______________________________________________ 4．What gives Wang the strength to do the work? ______________________________________________ 5．What question do you want to ask Wang? (Your question should be different from Zhang’s.) ______________________________________________ 1 / 7 学科网（北京）股份有限公司 $