Unit 2 课时1 A Viewing and listening & B Speaking（分层作业）英语新教材沪教版五四制八年级下册

Unit2 Great inventions and discoveries 课时1 A Viewing and listening & B Speaking分层作业 核心知识速记 03拓展培优 01基础达标 04思维进阶 02能力提升 ( 一、 核心词汇 discovery n. 发现；发觉 ancient adj. 古代的；古老的 BCE abbr. 公元前 CE abbr. 公元 exploration n. 探索；勘查 wheel n. 轮子；车轮 economy n. 经济 material n. 材料；原料 frequent adj. 频繁的；经常发生的 mention v. 提到；写到；说到 influence v. & n. 影响 convenient adj. 方便的；便利的 invention n. 发明；创造 inventor n. 发明者；发明家 technical adj. 技术的 financial adj. 财政的；金融的 二、核心句型 1. —What do you think is the greatest modern invention? 你认为最伟大的现代发明是什么？ —In my view, the light bulb is the greatest. It has changed our daily habits. 在我看来，电灯是最伟大的。它改变了我们的日常习惯。 2. —Why is the wheel such an important invention? 为什么轮子是如此重要的发明？ —Because it makes people’s work, travel and life much easier. 因为它让人们的工作、出行和生活变得容易多了。 3. —How have great inventions changed our lives? 伟大的发明如何改变了我们的生活？ —They have made communication faster, travel more convenient and work more efficient. 它们让沟通更快捷、出行更便利、工作更高效。 4. —Would you like to invent something in the future? 你未来想发明什么东西吗？ —Yes, I’d like to invent a smart backpack that can charge electronic devices. 是的，我想发明一个能给电子设备充电的智能背包。 ) 一、单词拼写（根据音标或句意完成单词） 1.[dI'skʌvəri] ____________ (n. 发现；发觉) 2.[ˈeɪnʃənt] ____________ (adj. 古代的；古老的) 3.The ____________ (轮子) is one of the most important inventions in history. 4.This new technology has a great ____________ (影响) on our daily life. 5.The Internet makes communication more ____________ (方便的) than before. 6.Edison is a famous ____________ (发明家) who invented the light bulb. 【答案】1. discovery 2. ancient 3. wheel 4. influence 5. convenient 6. inventor 二、短语翻译 1.改变我们的生活 ____________ 2.使…… 变得更容易 ____________ 3.与…… 保持联系 ____________ 4.科学探索 ____________ 5.日常习惯 ____________ 6.一项伟大的发明 ____________ 7.在紧急情况下 ____________ 8.对…… 有影响 ____________ 【答案】1. change our lives 2. make ... much easier 3. keep in touch with 4. scientific exploration 5. daily habits 6. a great invention 7. in an emergency 8. have an influence on 三、根据要求完成句子 1.我认为汽车是最伟大的现代发明之一。（汉译英） I think the car is one of the greatest ________________________. 2.纸的发明帮助传播了知识。（汉译英） The invention of paper helped ________________________. 3.电灯改变了人们的日常习惯，它比蜡烛更安全。（汉译英） The light bulb ________________________ and it is safer than candles. 4.— 你为什么喜欢互联网？（汉译英） — 因为它让我们的学习更简单。 —________________________? —Because it makes our study easier. 5.古代的人们用木头和芦苇制作船只。（汉译英） People in ancient times ________________________ wood and reeds. 【答案】1. modern inventions 2. spread knowledge 3. changes people’s daily habits 4. Why do you like the Internet 5. made ships with 一. 根据情景，在语篇中填入适当的内容 （A） Situation: A student (S) is talking to a physics teacher (P) about the discovery of electricity. S: I know that electricity powers most of our daily tools. (1) ________?(写一般疑问句) P: Yes, electricity is the foundation of modern technology. Life without it would be hard. S: I read that Franklin did experiments on electricity. (2) ________?(对 “in the 18th century” 提问) P: Franklin did famous experiments on electricity in the 18th century to study its nature. S: Can we generate electricity from renewable energy? P: (3) ________.(回答一般疑问句) Solar and wind energy can be used to generate electricity. S: Great! You’ve taught us that electricity (4) ________.(保持 “makes modern life more comfortable” 句意不变) （B） Situation: A student (S) is talking to a biology teacher (B) about the discovery of penicillin. S: I read that penicillin can treat bacterial infections. (1) ________?(写一般疑问句) B: Yes, it’s one of the most important medical discoveries. It has saved millions of lives. S: I noticed the science book introduces Fleming’s discovery. (2) ________?(对 “in 1928” 提问) B: Fleming discovered penicillin in 1928 when he observed mold killing bacteria. S: Can penicillin be used for all infections? B: (3) ________.(回答一般疑问句) It only works on bacterial infections, not viral ones. S: Interesting! You’ve taught us that penicillin (4) ________.(保持 “plays a key role in medical treatment” 句意不变) 二. 用单词的适当形式填空 1.The __________ (discover) of the new species surprised the scientists. 2.We visited some __________ (ancient) temples in the mountains. 3.They are planning another __________ (explore) to the South Pole. 4.The __________ (wheel) on the old cart are made of wood. 5.The country’s __________ (economy) has been growing steadily. 6.We need to buy some building __________ (material) for the house. 7.Fishermen mend their __________ (net) before going out to sea. 8.The two nations have been at __________ (war) for a long time. 9.The exciting movie __________ (excite) all the audience last night. 10.He was absent from school because of __________ (ill). 11.__________ (social) is an important political idea in some countries. 12.It is difficult to break a bad __________ (habit). 13.I can __________ (hard) believe what he said. 14.The room was __________ (total) dark when the lights went out. 15.I will call you on the __________ (telephone) later. My name is Kaspar and I’m a child-sized robot. I can open and close my mouth and eyes and I can 1 show several feelings, such as happiness, sadness and surprise. I was first made by scientists 2 2005. My job is to help children with autism (自闭症) understand feelings and language and know how 3 along with people. It 4 me twenty minutes once a week to talk and play with them. I often speak slowly to them, 5 they can better understand what I am saying. I like being touched by these children. However, if a child hurts 6 , I will hide my face in my hands and cry out, “Ouch! This hurts.” The child will then know it is wrong to hurt others. 7 clever robot I am! I really helped some autism children. I remember 8 eight-year-old girl in the primary school. She didn’t like to be touched by others last year. But she can hug everyone now and make some friends after playing with me for some time. She is 9 than before. As a robot for autism children, I hope 10 more helpful. I believe that scientists will make my wish come true in the future. 1．A．also B．either C．too 2．A．at B．in C．on 3．A．getting B．got C．to get 4．A．takes B．take C．took 5．A．so B．but C．or 6．A．me B．my C．I 7．A．What an B．What a C．How 8．A．an B．a C．the 9．A．happy B．happier C．happiest 10．A．become    ` B．becoming C．to become Choose the words or expressions and complete the passage. (选择最恰当的选项完成短文) It was fantastic to go to the Science Museum to see an exhibition about driverless vehicles (交通工具). Before my visit to the museum, I didn’t know much about vehicles that drive themselves using computer controls. Driverless cars might seem like something from 1 , but they’ve been around longer than we think. I learned that the first of them appeared years ago. It was a car called the Citroen DS19, which appeared back in 1960. It drove itself by 2 a network of cables (电缆) buried underground. Driverless vehicles have developed a lot since then. Newer ones are used for different purposes, like helping farmers by picking crops, or helping scientists by exploring under the ice. The exhibition was organized into three different areas. Each one 3 a different subject. The first was called “Land.” I was able to look at how driverless vehicles were already being used on land, and possible developments that would happen in the future. The issue of 4 is a big one. How can a driverless car make the right choices that a human makes in an emergency situation? Scientists are working on ways to solve this problem. I understood more about how difficult it was when I was playing with the interactive displays (交互式显示屏). Doing this let me see the world through the “eyes” of a driverless car. It’s very 5 to program a computer to make the decisions a human driver usually makes. In the zone called “Water,” driverless vehicles are being used to make maps of the sea floor and to understand how climate change is affecting the oceans. And in the final area, “ 6 ,” I learned about the flying drones (无人机) that are being developed to deliver products, but not just for shoppers. They’re also important for things like medical emergencies. The whole exhibition was incredibly interesting and made for a great day out 1．A．classical dramas B．historical records C．sci-fi novels D．travel magazines 2．A．collecting B．exchanging C．following D．separating 3．A．focused on B．held on C．lived on D．relied on 4．A．honesty B．quality C．reality D．safety 5．A．cheap B．fast C．hard D．simple 6．A．Air B．Care C．Sport D．War Part 1: Read the passage and answer the questions. The car is one of the greatest modern inventions. It was invented in the late 19th century. The first practical car was made by Karl Benz in 1885. Since then, cars have changed a lot. Cars have many advantages. They make travel faster and more convenient. People can drive cars to work, travel or visit friends. In emergencies, cars can take people to hospital quickly. Cars also help connect people in different places. However, cars also have some disadvantages. They produce air pollution, which is bad for the environment. Too many cars on the road can cause traffic jams. Also, car accidents sometimes happen, which may hurt people. Despite the disadvantages, cars are still an important part of our life. Scientists are trying to make electric cars, which are more environmentally friendly. 1.Who made the first practical car? 2.What are the advantages of cars? 3.What disadvantages do cars have? Part 2: Creative Task Suppose you are going to introduce a great invention to your classmates. Please write a short speech (about 60 words) including the following points: What is the invention? When and where was it invented? How has it changed our lives? ( 1 / 6 ) 学科网（北京）股份有限公司 $ Unit2 Great inventions and discoveries 课时1 A Viewing and listening & B Speaking分层作业 核心知识速记 03拓展培优 01基础达标 04思维进阶 02能力提升 ( 一、 核心词汇 discovery n. 发现；发觉 ancient adj. 古代的；古老的 BCE abbr. 公元前 CE abbr. 公元 exploration n. 探索；勘查 wheel n. 轮子；车轮 economy n. 经济 material n. 材料；原料 frequent adj. 频繁的；经常发生的 mention v. 提到；写到；说到 influence v. & n. 影响 convenient adj. 方便的；便利的 invention n. 发明；创造 inventor n. 发明者；发明家 technical adj. 技术的 financial adj. 财政的；金融的 二、核心句型 1. —What do you think is the greatest modern invention? 你认为最伟大的现代发明是什么？ —In my view, the light bulb is the greatest. It has changed our daily habits. 在我看来，电灯是最伟大的。它改变了我们的日常习惯。 2. —Why is the wheel such an important invention? 为什么轮子是如此重要的发明？ —Because it makes people’s work, travel and life much easier. 因为它让人们的工作、出行和生活变得容易多了。 3. —How have great inventions changed our lives? 伟大的发明如何改变了我们的生活？ —They have made communication faster, travel more convenient and work more efficient. 它们让沟通更快捷、出行更便利、工作更高效。 4. —Would you like to invent something in the future? 你未来想发明什么东西吗？ —Yes, I’d like to invent a smart backpack that can charge electronic devices. 是的，我想发明一个能给电子设备充电的智能背包。 ) 一、单词拼写（根据音标或句意完成单词） 1.[dI'skʌvəri] ____________ (n. 发现；发觉) 2.[ˈeɪnʃənt] ____________ (adj. 古代的；古老的) 3.The ____________ (轮子) is one of the most important inventions in history. 4.This new technology has a great ____________ (影响) on our daily life. 5.The Internet makes communication more ____________ (方便的) than before. 6.Edison is a famous ____________ (发明家) who invented the light bulb. 【答案】1. discovery 2. ancient 3. wheel 4. influence 5. convenient 6. inventor 二、短语翻译 1.改变我们的生活 ____________ 2.使…… 变得更容易 ____________ 3.与…… 保持联系 ____________ 4.科学探索 ____________ 5.日常习惯 ____________ 6.一项伟大的发明 ____________ 7.在紧急情况下 ____________ 8.对…… 有影响 ____________ 【答案】1. change our lives 2. make ... much easier 3. keep in touch with 4. scientific exploration 5. daily habits 6. a great invention 7. in an emergency 8. have an influence on 三、根据要求完成句子 1.我认为汽车是最伟大的现代发明之一。（汉译英） I think the car is one of the greatest ________________________. 2.纸的发明帮助传播了知识。（汉译英） The invention of paper helped ________________________. 3.电灯改变了人们的日常习惯，它比蜡烛更安全。（汉译英） The light bulb ________________________ and it is safer than candles. 4.— 你为什么喜欢互联网？（汉译英） — 因为它让我们的学习更简单。 —________________________? —Because it makes our study easier. 5.古代的人们用木头和芦苇制作船只。（汉译英） People in ancient times ________________________ wood and reeds. 【答案】1. modern inventions 2. spread knowledge 3. changes people’s daily habits 4. Why do you like the Internet 5. made ships with 一. 根据情景，在语篇中填入适当的内容 （A） Situation: A student (S) is talking to a physics teacher (P) about the discovery of electricity. S: I know that electricity powers most of our daily tools. (1) ________?(写一般疑问句) P: Yes, electricity is the foundation of modern technology. Life without it would be hard. S: I read that Franklin did experiments on electricity. (2) ________?(对 “in the 18th century” 提问) P: Franklin did famous experiments on electricity in the 18th century to study its nature. S: Can we generate electricity from renewable energy? P: (3) ________.(回答一般疑问句) Solar and wind energy can be used to generate electricity. S: Great! You’ve taught us that electricity (4) ________.(保持 “makes modern life more comfortable” 句意不变) （B） Situation: A student (S) is talking to a biology teacher (B) about the discovery of penicillin. S: I read that penicillin can treat bacterial infections. (1) ________?(写一般疑问句) B: Yes, it’s one of the most important medical discoveries. It has saved millions of lives. S: I noticed the science book introduces Fleming’s discovery. (2) ________?(对 “in 1928” 提问) B: Fleming discovered penicillin in 1928 when he observed mold killing bacteria. S: Can penicillin be used for all infections? B: (3) ________.(回答一般疑问句) It only works on bacterial infections, not viral ones. S: Interesting! You’ve taught us that penicillin (4) ________.(保持 “plays a key role in medical treatment” 句意不变) 【答案】 （A） (1) Does electricity power most of the tools we use in daily life (2) When did Franklin do experiments on electricity (3) Yes, we can (4) makes modern life more convenient and comfortable （B） (1) Is penicillin an important medical discovery that can treat bacterial infections (2) When did Fleming discover penicillin (3) No, we can’t (4) is of great importance in medical treatment 二. 用单词的适当形式填空 1.The __________ (discover) of the new species surprised the scientists. 2.We visited some __________ (ancient) temples in the mountains. 3.They are planning another __________ (explore) to the South Pole. 4.The __________ (wheel) on the old cart are made of wood. 5.The country’s __________ (economy) has been growing steadily. 6.We need to buy some building __________ (material) for the house. 7.Fishermen mend their __________ (net) before going out to sea. 8.The two nations have been at __________ (war) for a long time. 9.The exciting movie __________ (excite) all the audience last night. 10.He was absent from school because of __________ (ill). 11.__________ (social) is an important political idea in some countries. 12.It is difficult to break a bad __________ (habit). 13.I can __________ (hard) believe what he said. 14.The room was __________ (total) dark when the lights went out. 15.I will call you on the __________ (telephone) later. 【答案与解析】 1.discovery（名词，作句子主语，the 后接名词） 2.ancient（形容词，修饰名词 temples，无形式变化） 3.exploration（名词，another 后接单数名词） 4.wheels（名词复数，are 提示主语为复数） 5.economy（名词，作句子主语，has 提示用单数） 6.materials（名词复数，some 后接可数名词复数） 7.nets（名词复数，their 后接复数名词） 8.war（固定搭配 at war，无形式变化） 9.excited（动词过去式，last night 提示用一般过去时） 10.illness（名词，because of 后接名词） 11.Socialism（专有名词，首字母大写，不可数） 12.habit（名词，a 后接单数名词） 13.hardly（副词，修饰动词 believe） 14.totally（副词，修饰形容词 dark） 15.telephone（名词，on the telephone 固定搭配） My name is Kaspar and I’m a child-sized robot. I can open and close my mouth and eyes and I can 1 show several feelings, such as happiness, sadness and surprise. I was first made by scientists 2 2005. My job is to help children with autism (自闭症) understand feelings and language and know how 3 along with people. It 4 me twenty minutes once a week to talk and play with them. I often speak slowly to them, 5 they can better understand what I am saying. I like being touched by these children. However, if a child hurts 6 , I will hide my face in my hands and cry out, “Ouch! This hurts.” The child will then know it is wrong to hurt others. 7 clever robot I am! I really helped some autism children. I remember 8 eight-year-old girl in the primary school. She didn’t like to be touched by others last year. But she can hug everyone now and make some friends after playing with me for some time. She is 9 than before. As a robot for autism children, I hope 10 more helpful. I believe that scientists will make my wish come true in the future. 1．A．also B．either C．too 2．A．at B．in C．on 3．A．getting B．got C．to get 4．A．takes B．take C．took 5．A．so B．but C．or 6．A．me B．my C．I 7．A．What an B．What a C．How 8．A．an B．a C．the 9．A．happy B．happier C．happiest 10．A．become    ` B．becoming C．to become 【答案】 1．A 2．B 3．C 4．A 5．A 6．A 7．B 8．A 9．B 10．C 【导语】本文主要讲述了一个名叫Kaspar的机器人，它被用于帮助自闭症儿童理解情感和语言，并学会如何与人相处。 1．句意：我还可以表达多种情感，比如高兴、悲伤和惊讶。 also也，通常用于肯定句中，放在be动词、情态动词或助动词之后，实义动词之前；either也，用于否定句；too也，用于肯定句中，但通常放在句末，并用逗号隔开。空处所在句是肯定句，且位于情态动词之后，用also。故选A。 2．句意：我最初是由科学家在2005年制作的。 at用于具体时间点；in用于表示某一年；on用于某一天。2005年是某一年，用介词in。故选B。 3．句意：我的工作是帮助自闭症儿童理解情感和语言，知道如何与人相处。 getting动名词；got过去式；to get不定式。how to do sth“如何做某事”。故选C。 4．句意：每周一次，我花二十分钟和他们交谈和玩耍。 takes动词三单；take动词原形；took过去式。根据“once a week”可知，此处描述的是一般的行为习惯，需用一般现在时，主语是It，需用动词三单形式takes。故选A。 5．句意：我经常慢慢地对他们说话，这样他们能更好地理解我说的话。 so所以；but但是；or否则。此处表示前后因果关系，后句是结果，用so表示“因此”。故选A。 6．句意：然而，如果有孩子伤害我，我会把脸藏在手里并喊“哎呀！这很痛。” me宾格；my形容词性物主代词；I主格。空处位于动词hurts之后，应该用宾格来指代自己。故选A。 7．句意：我是多么聪明的机器人啊！ What an后面常跟单数以元音音素开头的名词；What a后面跟单数以辅音音素开头的名词；How常用于修饰形容词。中心词是名词robot，且clever是以辅音音素开头的单数名词，用What a。故选B。 8．句意：我记得有一个小学的八岁女孩。 an用于以元音开头的单数名词前；a用于辅音开头的单数名词前；the特指。空处泛指“一个小学的八岁女孩”，且eight以元音音素开头，用不定冠词an。故选A。 9．句意：她比以前更加快乐。 happy形容词原级；happier形容词比较级；happiest形容词最高级。根据“than before.”可知，空处需用比较级。故选B。 10．句意：作为一个自闭症儿童的机器人，我希望变得更加有用。 become动词原形；becoming现在分词；to become动词不定式。hope to do sth“希望做某事”。故选C。 Choose the words or expressions and complete the passage. (选择最恰当的选项完成短文) It was fantastic to go to the Science Museum to see an exhibition about driverless vehicles (交通工具). Before my visit to the museum, I didn’t know much about vehicles that drive themselves using computer controls. Driverless cars might seem like something from 1 , but they’ve been around longer than we think. I learned that the first of them appeared years ago. It was a car called the Citroen DS19, which appeared back in 1960. It drove itself by 2 a network of cables (电缆) buried underground. Driverless vehicles have developed a lot since then. Newer ones are used for different purposes, like helping farmers by picking crops, or helping scientists by exploring under the ice. The exhibition was organized into three different areas. Each one 3 a different subject. The first was called “Land.” I was able to look at how driverless vehicles were already being used on land, and possible developments that would happen in the future. The issue of 4 is a big one. How can a driverless car make the right choices that a human makes in an emergency situation? Scientists are working on ways to solve this problem. I understood more about how difficult it was when I was playing with the interactive displays (交互式显示屏). Doing this let me see the world through the “eyes” of a driverless car. It’s very 5 to program a computer to make the decisions a human driver usually makes. In the zone called “Water,” driverless vehicles are being used to make maps of the sea floor and to understand how climate change is affecting the oceans. And in the final area, “ 6 ,” I learned about the flying drones (无人机) that are being developed to deliver products, but not just for shoppers. They’re also important for things like medical emergencies. The whole exhibition was incredibly interesting and made for a great day out 1．A．classical dramas B．historical records C．sci-fi novels D．travel magazines 2．A．collecting B．exchanging C．following D．separating 3．A．focused on B．held on C．lived on D．relied on 4．A．honesty B．quality C．reality D．safety 5．A．cheap B．fast C．hard D．simple 6．A．Air B．Care C．Sport D．War 【答案】1．C 2．C 3．A 4．D 5．C 6．A 【导语】本文主要介绍了作者参观科学博物馆中无人驾驶交通工具展览的经历，包括无人驾驶交通工具的发展历史、展览的不同展区主题以及其在陆地、水上和空中的应用等内容。 1．句意：无人驾驶汽车似乎像是来自科幻小说里的东西，但它们的存在时间比我们想象的要长。 classical dramas古典戏剧；historical records历史记录；sci-fi novels科幻小说；travel magazines旅游杂志。根据常识，无人驾驶汽车在过去常被认为是具有未来感的科技产物，符合科幻小说中常见的未来场景设定。故选C。 2．句意：它是一辆名为雪铁龙DS19的汽车，早在1960年就出现了。它通过跟随埋在地下的电缆网络来实现自动驾驶。 collecting收集；exchanging交换；following跟随；separating分开。结合逻辑，无人驾驶汽车需要依据特定路线行驶，following“跟随”电缆网络能合理体现其行驶方式，符合语境。故选C。 3．句意：展览分为三个不同的区域，每个区域都聚焦于一个不同的主题。 focused on聚焦于；held on坚持、不挂断；lived on以……为食、靠……生活；relied on依靠。根据后句“The first was called ‘Land.’”可知，第一个区域有明确主题，说明每个区域的核心是聚焦特定主题。故选A。 4．句意：安全性问题是一个重要问题。在紧急情况下，无人驾驶汽车如何做出和人类一样正确的选择呢？ honesty诚实；quality质量；reality现实；safety安全。根据“How can a driverless car make the right choices that a human makes in an emergency situation?”可知，此处讨论的是无人驾驶汽车的安全问题。故选D。 5．句意：编写程序让计算机做出人类司机通常会做出的决策是非常困难的。 cheap便宜的；fast快速的；hard困难的；simple简单的。根据“I understood more about how difficult it was when I was playing with the interactive displays”可知，此处应强调该过程的困难。故选C。   6．句意：在最后一个名为“空中”的区域，我了解到正在研发的用于配送物品的飞行无人机，它们不仅为购物者服务，在医疗紧急情况等事务中也发挥着重要作用。 Air空中；Care关怀；Sport运动；War战争。根据“flying drones”可知，无人机的活动场景是空中，该区域主题应与空中相关。故选A。 Part 1: Read the passage and answer the questions. The car is one of the greatest modern inventions. It was invented in the late 19th century. The first practical car was made by Karl Benz in 1885. Since then, cars have changed a lot. Cars have many advantages. They make travel faster and more convenient. People can drive cars to work, travel or visit friends. In emergencies, cars can take people to hospital quickly. Cars also help connect people in different places. However, cars also have some disadvantages. They produce air pollution, which is bad for the environment. Too many cars on the road can cause traffic jams. Also, car accidents sometimes happen, which may hurt people. Despite the disadvantages, cars are still an important part of our life. Scientists are trying to make electric cars, which are more environmentally friendly. 1.Who made the first practical car? 2.What are the advantages of cars? 3.What disadvantages do cars have? Part 2: Creative Task Suppose you are going to introduce a great invention to your classmates. Please write a short speech (about 60 words) including the following points: What is the invention? When and where was it invented? How has it changed our lives? 【答案】 Part 1 1.Karl Benz made the first practical car. 2.They make travel faster and more convenient, can take people to hospital quickly in emergencies and help connect people in different places. 3.They produce air pollution, cause traffic jams and sometimes lead to car accidents. Part 2 (Sample answer) My favourite invention is the Internet. It was invented in 1969 in the US. It has changed our lives a lot. We can communicate with others easily, get information quickly and study online. It makes the world smaller and our life more convenient. I can’t imagine life without it! ( 1 / 6 ) 学科网（北京）股份有限公司 $ Unit 2 Great inventions and discoveries 课时1 A Viewing and listening & B Speaking分层作业 参考答案 一、单词拼写（根据音标或句意完成单词） 1. discovery 2. ancient 3. wheel 4. influence 5. convenient 6. inventor 二、短语翻译 1. change our lives 2. make ... much easier 3. keep in touch with 4. scientific exploration 5. daily habits 6. a great invention 7. in an emergency 8. have an influence on 三、根据要求完成句子 1. modern inventions 2. spread knowledge 3. changes people’s daily habits 4. Why do you like the Internet 5. made ships with 一、根据情景，在语篇中填入适当的内容 （A） (1) Does electricity power most of the tools we use in daily life (2) When did Franklin do experiments on electricity (3) Yes, we can (4) makes modern life more convenient and comfortable （B） (1) Is penicillin an important medical discovery that can treat bacterial infections (2) When did Fleming discover penicillin (3) No, we can’t (4) is of great importance in medical treatment 二、用单词的适当形式填空 1.discovery（名词，作句子主语，the 后接名词） 2.ancient（形容词，修饰名词 temples，无形式变化） 3.exploration（名词，another 后接单数名词） 4.wheels（名词复数，are 提示主语为复数） 5.economy（名词，作句子主语，has 提示用单数） 6.materials（名词复数，some 后接可数名词复数） 7.nets（名词复数，their 后接复数名词） 8.war（固定搭配 at war，无形式变化） 9.excited（动词过去式，last night 提示用一般过去时） 10.illness（名词，because of 后接名词） 11.Socialism（专有名词，首字母大写，不可数） 12.habit（名词，a 后接单数名词） 13.hardly（副词，修饰动词 believe） 14.totally（副词，修饰形容词 dark） 15.telephone（名词，on the telephone 固定搭配） （A） 1．A 2．B 3．C 4．A 5．A 6．A 7．B 8．A 9．B 10．C （B） 1．C 2．C 3．A 4．D 5．C 6．A Part 1 1. Karl Benz made the first practical car. 2. They make travel faster and more convenient, can take people to hospital quickly in emergencies and help connect people in different places. 3. They produce air pollution, cause traffic jams and sometimes lead to car accidents. Part 2 (Sample answer) My favourite invention is the Internet. It was invented in 1969 in the US. It has changed our lives a lot. We can communicate with others easily, get information quickly and study online. It makes the world smaller and our life more convenient. I can’t imagine life without it! ( 1 / 6 ) 学科网（北京）股份有限公司 $