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Unit 5 Power of Ideas 单元测试题 2026-2027学年 人教版
英语九年级上册
（考试时间：100分钟 试卷满分：100分）
注意事项： 1、答题前，请考生先将自己的姓名、准考证号填写清楚，并认真核对条形码上的姓名、准考证号、考室和座位号； 2、必须在答题卡上答题，在草稿纸、试题卷上答题无效； 3、答题时，请考生注意各大题题号后面的答题提示； 4、请勿折叠答题卡，保持字体工整、笔迹清晰、卡面清洁; 5、答题卡上不得使用涂改液、涂改胶和贴纸； 6、本学科试卷中听力材料以中速朗读两遍。
第一部分 听力（共两节，满分20分）
第一节 听下面5段对话。每段对话后有一个小题，从题中所给的A、B、C三个选项中选出最佳选项回答问题。（共5小题，计5分）
1．What are they talking about
A．Books. B．Fruits. C．Tea.
2．Who does the boy admire most
A．An inventor. B．A painter. C．A musician.
3．What was the invention used for
A．Making paper. B．Drinking water. C．Testing the earthquake.
4．How much did the boy pay for his shirt
A． 30. B． 40. C． 45.
5．What does the man think is the most useful invention
A．The high- speed train. B．The mobile phone. C．The 5G technology.
第二节（共15小题；每小题1分，满分15分）
听下面一段对话，回答两个小题。
6．Who are the speakers talking about
A．A famous doctor. B．A famous writer. C．A famous inventor.
7．When was the person born
A．On January 11th, 1837.
B．On February 11th, 1847.
C．On July 11th, 1857.
听下面一段对话，回答以下小题。
8．What does the boy’s sister use the computer for
A．Studying English.
B．Watching TV plays.
C．Playing computer games.
9．How long should the boy’s sister spend on the computer a week
A．Over two hours.
B．Only two hours.
C．Less than two hours.
听下面一段对话，回答以下小题。
10．Why does the boy look unhappy
A．He has to do maths exercises.
B．He has to write a paper.
C．He has to take a history class.
11．What does the girl think of the boy’s work
A．Boring. B．Useful. C．Not too hard.
12．What’s the most important invention for the girl
A．The computer. B．The clock. C．Chocolate.
听下面一段对话，回答三个小 题。
13．What invention does Lucy like most
A．The laptop. B．The headphones. C．The radio.
14．What does Lucy do with them
A．Listening to English and music. B．Cooking food. C．Playing games.
15．What does Lucy think of them
A．They waste too much time. B．They bring us happiness. C．They are too expensive.
听下面一段短文，短文后有五个小题，请根据短文内容，在每小题所给的A、B、C三个选项中选出一个最佳选项。短文读两遍。
16．Where did Han Lin go last weekend
A．A science museum. B．A 3D printing show. C．A book fair.
17．What can a 3D printer print for people in need
A．New cars. B．Computers. C．Arms and legs.
18．What was the most amazing thing
A．It made a big house. B．It cooked food. C．It printed a small heart.
19．What does Han Lin hope
A．He can buy a 3D printer. B．People can use 3D printers to help more patients. C．Schools can teach 3D printing.
20．What is the passage mainly about
A．How to make a 3D printer. B．The price of 3D printers. C．A 3D printing show.
阅读理解（共两节，满分30分）
第一节 （共11小题；每小题2分，满分22分）
A
Robots in Our Lives
Robots are becoming a bigger part of our lives. In factories, robots are used to do heavy and dangerous work. They can work day and night without getting tired. In hospitals, robots are used to help doctors do operations more carefully. Some robots can even talk with people and make them happy. In our homes, robot cleaners can sweep the floor while we are out. Scientists say that in the future, more robots will be used in farming and education. However, robots can never think like humans. They do what they are told. So it is important for us to learn new skills and think creatively. Robots are helpful, but humans are always the most important.
21．Where are robots used to do heavy work
A．In factories. B．In schools. C．In kitchens. D．In hospitals.
22．What can robot cleaners do
A．They can cook food. B．They can sweep the floor.
C．They can drive cars. D．They can sing songs.
23．What does the writer think of robots
A．Robots can think like humans. B．Robots will replace all workers. C．Robots are helpful, but humans are more important. D．Robots are too dangerous to use.
B
Sitting for too long is harmful to our health. Studies show that office workers spend about 75% of their working hours seated. To solve this problem, a British designer, John Smith, invented a standing desk that encourages users to change their posture regularly.
The desk is different from traditional standing desks. It has a special sensor (传感器) that reminds users to sit or stand every 30 minutes. When it is time to change, the desk makes a soft sound and the surface moves up or down slowly. This design prevents users from staying in one position for too long.
Although it is not as comfortable as a normal desk at first, many users say it helps them feel more energetic. “I used to feel tired and sleepy in the afternoon,” said one user. “Now I feel much better.” The desk also has a built-in exercise bike, so users can do light exercise while working.
In conclusion, this innovative desk is a good solution to the problem of sitting too much. It makes people more aware of their health and encourages an active lifestyle.
24．Why did John Smith invent the special desk
A．To help people sit comfortably for long hours.
B．To encourage users to change postures regularly.
C．To replace all traditional desks in the office.
D．To make people work faster.
25．Compared with traditional standing desks, the new desk ________.
A．is heavier B．has a sensor to remind users
C．is cheaper D．is made of wood
26．What does the underlined word “innovative” in the last paragraph mean
A．传统的 B．创新的 C．舒适的 D．昂贵的
27．Which of the following is TRUE about the desk
A．It was invented by a Chinese designer.
B．It can make a loud noise to wake users up.
C．It has a built-in exercise bike.
D．It is very cheap for everyone to buy.
C
① In recent years, 3D printing has become one of the most exciting technological developments. It allows us to create physical objects from digital designs by adding layers of material, such as plastic or metal.
② The possibilities of 3D printing are vast. In medicine, doctors are using 3D printing to create customized prosthetics, dental implants, and even human tissue. In construction, 3D printers can build houses in a fraction of the time it takes traditional methods. In the food industry, chefs are experimenting with 3D-printed chocolate and pasta.
③ However, 3D printing also raises concerns. One issue is the potential for 3D-printed weapons. Another is the impact on traditional manufacturing jobs. If products can be printed at home, factories may become obsolete. There are also environmental concerns—the materials used in 3D printing are not always recyclable.
④ Despite these challenges, experts believe that 3D printing will continue to grow. The key is to regulate its use and develop sustainable materials. With careful management, 3D printing could revolutionize the way we make and consume things.
28．What is 3D printing
A．A way to design digital images. B．A way to create physical objects from digital designs.
C．A way to print on paper. D．A way to build robots.
29．In which field is 3D printing used according to the passage
A．Medicine. B．Education. C．Transportation. D．Agriculture.
30．What is one concern about 3D printing
A．It is too expensive. B．It could be used to make weapons.
C．It is too slow. D．It is difficult to learn.
31．What is the best structure of the text
A．①—②③—④ B．①②—③—④ C．①—②—③④ D．①②③—④
第二节 (共4小题；每小题2分，满分8分)
People often find it hard to make some inventions. So they think only a few people can be inventors! In fact, everyone can be an inventor if they want and are willing to start. 32 To be an inventor, here are some wrong ideas you should avoid.
Wrong idea 1: 33
Well, inventing means creating something new, but the idea could also come from something that is already there. The Wright brothers, for example, got the ideas for building a “flying machine” from watching birds.
Wrong idea 2: Inventors are born, not made.
There are a lot of factors (因素) that make inventions possible. Take Mozart, for example. He was born with a special talent for music. 34 His father was a music teacher, and Mozart practised for hours every day. Thomas Edison said that being an inventor was “99% hard work and 1% inspiration!”. Very successful creators don’t give up when they get something wrong. As one inventor said, “A failure is the right answer to the wrong question!”
Wrong idea 3: Inventors are always old people.
35 Here is an example of young inventors: When Chester Greenwood was 15, he invented earmuffs (耳罩). He hated his ears getting cold in winter, so he made them with fur and wire (金属丝). They are still widely used in cold weather today.
A．But other factors were also important for his creativity.
B．Perhaps this sounds crazy, but it’s true.
C．An invention has to be something totally new.
D．Believe that you can invent something when you are young.
E．Everyone agrees with the idea.
第三部分 语言运用（共两节，满分25分）
第一节 （共10小题；每小题1.5分，满分15分）
Long ago, people wrote on many different materials, such as bones, stones, wood and silk. But these materials were either difficult to use or very expensive.
Cai Lun, an officer in the Eastern Han Dynasty, wanted to 36 this problem. He tried many different 37 , but none of them were good enough. One day, he got an idea. He 38 that bark, some plants and old clothes could be used to make paper.
In his 39 , all the ingredients were mixed and boiled in water. Then the mixture was beaten, cut up and mixed with water 40 . Next, it was poured over a bamboo screen and left to dry. Finally, a piece of paper was 41 .
The paper made by Cai Lun was cheap and easy to produce. It was not only used for writing, but also for 42 things like umbrellas and windows. The invention of paper 43 the world. It first spread to other countries in Asia, and later reached Europe.
Today, paper is still 44 all over the world. Cai Lun’s 45 idea changed our lives in a big way..
36．A．find B．solve C．ask D．meet
37．A．methods B．tools C．books D．papers
38．A．forgot B．doubted C．believed D．refused
39．A．dream B．experiment C．house D．school
40．A．once B．never C．also D．again
41．A．eaten B．made C．drawn D．written
42．A．making B．buying C．cleaning D．selling
43．A．saved B．found C．changed D．showed
44．A．lost B．used C．hidden D．forgotten
45．A．boring B．strange C．dangerous D．clever
第二节 （共10小题；每小题1分，满分10分）
阅读下面短文，在空白处填入 1 个适当单词或括号内单词的正确形式。
Many great ideas change human history. But every great thought starts from small minds. Lin Qiaozhi was 46 outstanding Chinese doctor. In the old days, many women faced great danger when giving birth. Lin Qiaozhi’s idea was 47 (improve) medical care for women. She devoted all her life 48 this goal.
When she was young, she 49 (meet) lots of poor sick women. She kept writing down her 50 (think) in notebooks. Through years of hard work, she solved many difficult medical problems. Her ideas 51 (save) thousands of women’s lives already.
Now her spirit still influences teenagers. Technology 52 (develop) fast these years. More young people get chances to show 53 (they) creative ideas. If you keep 54 (watch) life around you and keep thinking, you may also produce something 55 (amaze). Ideas have real power, and the power lies in everyone.
第四部分 综合技能 （共两节，满分25分）
第一节 （共5小题；每小题2分，满分10分）
In the fairy tale “Cinderella”, the wicked stepmother wants to stop Cinderella from going to the ball. She gives Cinderella an impossible task: to sort a huge pile of mixed grains before midnight. Thanks to some helpful mice and birds, Cinderella finishes in time, and everyone lives happily ever after.
But in real life, sorting tiny things quickly is no fairy tale — it is a serious problem. Every day, factories around the world need to sort millions of tiny objects, from rice grains to medicine pills. Doing it by hand is slow, boring, and often full of mistakes.
This is where an amazing invention called “optical sorting” comes in. Optical sorters use cameras and clever computer programs to look at each object as it passes by at high speed. If something is the wrong colour, shape, or size, a puff of air blows it off the line in just a fraction of a second.
The technology was first developed in the 1970s to sort potatoes. Today, optical sorters are used in food factories, recycling plants, and even in mining. They can sort thousands of objects every minute — far faster and more accurately than any human.
One of the newest uses is in recycling. This means more plastic can be reused instead of being thrown away. Some advanced sorters can even identify different types of plastic that look almost identical to the human eye.
So the next time you throw a plastic bottle into a recycling bin, remember: a wise old fairy tale might say “Bibbidi-Bobbidi-Boo”, but in the real world, it is cameras, computers, and puffs of air that do the real magic.
根据短文内容，回答下列问题。
56．What impossible task does the stepmother give Cinderella
57．Why is sorting tiny objects by hand a problem
58．How do optical sorters identify objects
59．What do sorters use to blow away the wrong objects
60．What can we learn from the passage
第二节（满分15分）
61．My Favourite Invention
学校英文报正在开展“My Favourite Invention”征文活动。请你根据以下提示写一篇短文，介绍你最喜欢的发明。
要点：
1. 你最喜欢的发明是什么；
2. 它的用途；
3. 它为什么重要。
要求：
1. 80-100 词；
2. 至少使用一个被动语态 (如 It was invented.../It is used for...)；
3. 不得出现真实校名和姓名。
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《Unit 5 Power of Ideas 单元测试题 2026-2027学年 人教版 英语九年级上册》参考答案
题号 1 2 3 4 5 6 7 8 9 10
答案 C A C A A C B C C B
题号 11 12 13 14 15 16 17 18 19 20
答案 C C B A B B C C B C
题号 21 22 23 24 25 26 27 28 29 30
答案 A B C B B B C B A B
题号 31 32 33 34 35 36 37 38 39 40
答案 A B C A D B A C B D
题号 41 42 43 44 45
答案 B A C B D
1．C
【原文】W: Who was the first to discover tea as a drink
M: It was Shen Nong.
2．A
【原文】W: Mike, who do you think is the greatest person in American history
M: Thomas Edison. He invented over 1,000 inventions.
3．C
【原文】M: Look! What an interesting invention! Was it used for drinking water
W: No. It was used for testing earthquakes in ancient China.
4．A
【原文】M: Mom, guess how much I paid for this shirt.
W: Oh, I’ve no idea. Forty pounds
M: No, Mom. It was thirty-five pounds, but I got it for thirty. It’s on sale.
W: Sounds good. It’s very pretty.
5．A
【原文】W: What do you think is the most useful invention, the mobile phone or the 5G technology
M: Neither. For me, the high-speed train is the most useful because it allows us to go where we want to go faster.
6．C 7．B
【原文】W: Do you know Thomas Edison
M: Yes. He is a great American inventor.
W: When was he born
M: He was born on February 11th, 1847.
W: You know so much about him.
M: Yes. He had more than 1,000 inventions in his life.
W: Wow, what a great man!
8．C 9．C
【原文】M: Which do you think is the greatest invention, the smart phone, the TV or the computer
W: The computer, of course.
M: Why
W: Because the world is connected by computers.
M: I agree. But my sister often spends too much time playing computer games.
W: That’s too terrible. But every coin has two sides.
M: Quite right. In my view, my sister should spend less than two hours a week on it.
W: I agree with you. Something useful must be done right now.
10．B 11．C 12．C
【原文】W: What’s wrong You look unhappy.
M: Oh, I have to write a paper about the most important invention ever made. It’s for my history class.
W: That’s not too hard.
M: But I have to hand it in tomorrow.
W: Well, what invention are you going to write about
M: The computer, I guess.
W: Maybe you should choose something older like clocks.
M: No, I can’t. I don’t know anything about them.
W: Okay, well, I’m sure you’ll think of something good.
M: Hey, what do you think is the most important invention
W: Me Let me see. Er, chocolate.
13．B 14．A 15．B
【原文】M: Hi, Lucy. What invention do you like the most
W: I like my headphones most. They help me every day.
M: What do you usually do with them
W: With them, I can listen to English and music anywhere. They make my life happy.
M: That sounds nice. But my mum says too much time with them is not good for our ears.
W: Yes, but they bring us much happiness if we know how to use them well.
16．B 17．C 18．C 19．B 20．C
【原文】
Last weekend, Han Lin went to a 3D printing show. He was very excited. He saw lots of amazing things there. A 3D printer can print toys, shoes and even arms and legs for people who need them. It can also print food and houses. The most amazing thing was that a 3D printer printed a small heart! Han Lin said that 3D printers are changing our lives. He hoped that one day people could use them to help more patients.
21．A 22．B 23．C
【导语】本文是一篇说明文，主要介绍了机器人在工厂、医院、家庭等领域的应用，说明了机器人的局限性，并强调了人类的重要性。
【详解】21．根据文中“In factories, robots are used to do heavy and dangerous work.”可知，机器人是在工厂被用来做繁重工作的。
22．根据文中“In our homes, robot cleaners can sweep the floor while we are out.”可知，机器人清洁工的功能是扫地。
23．根据文章最后一句“Robots are helpful, but humans are always the most important.”可知，作者认为机器人虽有帮助，但人类始终是最重要的。
24．B 25．B 26．B 27．C
【导语】本文是一篇说明文，介绍了英国设计师John Smith发明的一款新式智能升降办公桌，说明了它的功能、特点以及对人们健康的益处。
【详解】24．文章第一段提到“a British designer, John Smith, invented a standing desk that encourages users to change their posture regularly.”，说明发明这款桌子是为了鼓励使用者经常变换姿势，因此选B。
25．文章第二段提到“The desk is different from traditional standing desks. It has a special sensor that reminds users to sit or stand every 30 minutes.”，对比传统站立办公桌，新桌子带有提醒用户的传感器，因此选B。
26．全文都在介绍这款带有传感器的新式办公桌，它和传统桌子不一样，属于创新设计，由此推测innovative意为“创新的”，因此选B。
27．文章第三段提到“The desk also has a built in exercise bike, so users can do light exercise while working.”，可知桌子内置健身单车，因此选C。
28．B 29．A 30．B 31．A
【导语】本文主要介绍了3D打印技术的定义、工作原理，列举了其在医疗、建筑等领域的应用，同时也指出了该技术带来的潜在问题，最后展望了未来的发展前景。
【详解】28．根据文章第一段“It allows us to create physical objects from digital designs by adding layers of material, such as plastic or metal.”可知，3D打印是一种通过数字设计创造实体物品的方法。
29．根据文章第二段“In medicine, doctors are using 3D printing to create customized prosthetics, dental implants, and even human tissue.”可知，3D打印技术被应用于医学领域。
30．根据文章第三段“However, 3D printing also raises concerns. One issue is the potential for 3D-printed weapons.”可知，3D打印技术存在的问题之一是可能被用于制造武器。
31．根据文章结构可知，第一段介绍什么是3D打印技术；第二、三段分别介绍3D打印的应用和存在的问题；第四段总结3D打印的发展前景。因此文章结构为“总—分—总”，即①—②③—④。
32．B 33．C 34．A 35．D
【导语】本文是一篇说明文。文章主要讲述了任何人都可以成为发明家，并列举了关于发明家的三个错误观念加以反驳，鼓励人们勇于发明创造。
【详解】32．根据空前“In fact, everyone can be an inventor if they want and are willing to start.”以及空后“To be an inventor, here are some wrong ideas you should avoid.”可知，此处需要一个过渡句，既承接上文看似令人难以置信的观点，又自然引出下文要讨论的错误观念。选项B“Perhaps this sounds crazy, but it’s true.”起到了承上启下的作用，符合语境。
33．根据空后“Well, inventing means creating something new, but the idea could also come from something that is already there.”以及莱特兄弟从观察鸟类中获得制造“飞行器”灵感的例子可知，本段反驳的错误观念是“发明必须是全新的东西”。选项C“An invention has to be something totally new.”准确概括了这一错误观念，适合作为该段小标题。
34．根据空前“He was born with a special talent for music.”以及空后“His father was a music teacher, and Mozart practised for hours every day.”可知，此处需要说明除了天赋之外，后天努力等其他因素也很重要。选项A“But other factors were also important for his creativity.”起到了承上启下的作用，既承接了天赋的提及，又引出了后天努力的因素。
35．根据本段小标题“Inventors are always old people.”以及空后“Here is an example of young inventors: When Chester Greenwood was 15...”可知，本段旨在说明年轻人也能成为发明家。选项D“Believe that you can invent something when you are young.”作为段首句，能够概括本段主旨并引出后文15岁少年的例证。
36．B 37．A 38．C 39．B 40．D 41．B 42．A 43．C 44．B 45．D
【导语】本文是一篇记叙文。文章介绍了东汉蔡伦发明造纸术的背景、过程及步骤，阐述了纸的用途及其对世界和人类生活的巨大影响。
【详解】36．句意：东汉官员蔡伦就想解决这个问题。
根据“this problem”可知，表示解决问题，solve“解决”符合语境。find“发现”，ask“问”，meet“遇见”，不与problem搭配表示解决。
37．句意：他尝试了许多不同的方法，但它们都不够好。
根据前文“想要解决问题”，发明过程中需尝试不同方法，methods“方法”符合语境。tools“工具”，books“书”，papers“纸”，不符合发明尝试的语境。
38．句意：他相信树皮、植物和旧衣服可以用来造纸。
根据“got an idea”可知，有了主意后认为材料可行，believed“相信”符合语境。forgot“忘记”，doubted“怀疑”，refused“拒绝”，与有了主意并去实施的逻辑相反。
39．句意：在他的实验中，所有原料被混合并在水中煮沸。
根据造纸的制作过程，属于科学实验，experiment“实验”符合语境。dream“梦想”，house“房子”，school“学校”，不能准确概括制作过程。
40．句意：然后混合物被捣碎、切碎并再次与水混合。
根据前文已提到“mixed”，此处指工序中的再次混合，again“再次”符合语境。once“一次”，never“从未”，also“也”，不符合工序重复的逻辑。
41．句意：最后，一张纸被制成了。
根据造纸流程，最终结果是纸被制作出来，made“制作”符合语境。eaten“吃”，drawn“画”，written“写”，不符合纸的生产结果。
42．句意：它不仅用于书写，还用于制作雨伞和窗户等物品。
根据“umbrellas and windows”可知，纸是制作这些物品的原料，making“制作”符合语境。buying“买”，cleaning“清洁”，selling“卖”，不符合纸的功能用途。
43．句意：纸的发明改变了世界。
根据后文传播到各国，发明通常改变世界，changed“改变”符合语境。saved“拯救”，found“发现”，showed“展示”，程度或语意不符。
44．句意：今天，纸仍然在世界各地被使用。
根据“Today... still”可知，纸至今仍在广泛应用，used“使用”符合语境。lost“丢失”，hidden“隐藏”，forgotten“忘记”，与事实相反。
45．句意：蔡伦聪明的想法极大地改变了我们的生活。
根据“changed our lives in a big way”可知，这是伟大的发明，源于聪明的想法，clever“聪明的”符合语境。boring“无聊的”，strange“奇怪的”，dangerous“危险的”，为贬义或中性，不符。
46．an 47．to improve 48．to 49．met 50．thoughts 51．have saved 52．is developing 53．their 54．watching 55．amazing
【导语】本文介绍了林巧稚医生的事迹，告诉我们伟大的想法源于点滴思考，每个人都拥有思想的力量。
【详解】46．句意：林巧稚是一位杰出的中国医生。outstanding是以元音音素开头的单词，表示“一位”，要用不定冠词an。
47．句意：林巧稚的想法是改善女性的医疗护理。此处用动词不定式作表语，用来解释说明主语idea的具体内容。
48．句意：她把自己的一生都奉献给了这个目标。固定搭配devote one’s life to…，意为“把一生奉献给……”，to是介词。
49．句意：在她年轻的时候，她遇到过很多贫苦的患病女性。由“When she was young”可知，描述过去发生的动作，动词要用一般过去时。
50．句意：她坚持在笔记本上写下自己的想法。形容词性物主代词her后面接名词，think的名词形式thought，表示多种想法，使用复数thoughts。
51．句意：她的思想已经挽救了成千上万女性的生命。句中already是现在完成时的标志词，主语Her ideas是复数，故用have saved。
52．句意：这些年科技发展十分迅速。these years表示现阶段正在发生变化，用现在进行时，主语Technology为不可数名词，be动词用is。
53．句意：更多年轻人有机会展示他们富有创造性的想法。修饰名词creative ideas，要使用形容词性物主代词their。
54．句意：如果你持续观察你身边的生活并且不断思考。固定搭配keep doing sth.，意为“持续/一直做某事”，后面接动名词。
55．句意：你或许也能创造出一些令人惊叹的东西。修饰不定代词something，要用 ing形式的形容词amazing，表示“令人惊叹的”。
56．To sort a huge pile of mixed grains before midnight. 57．Because doing it by hand is slow, boring, and often full of mistakes. 58．They use cameras and clever computer programs (to look at each object as it passes by). 59．A puff of air. 60．Technology like optical sorting can help us solve difficult sorting problems efficiently and accurately.（答案不唯一，言之有理即可。）
【导语】本文由童话故事《灰姑娘》引入，介绍了光学分选这项技术的工作原理、发展历程以及在食品、采矿、回收利用等领域的应用。
【详解】56．根据第一段“She gives Cinderella an impossible task: to sort a huge pile of mixed grains before midnight.”直接给出任务内容。可直接提取原文信息。
57．根据第二段“Doing it by hand is slow, boring, and often full of mistakes.”说明了手工分拣微小物品存在的问题。可直接提取原文信息。
58．根据第三段“Optical sorters use cameras and clever computer programs to look at each object as it passes by at high speed.”介绍了光学分选机识别物品的方式。可直接提取原文信息。
59．根据第三段“If something is the wrong colour, shape, or size, a puff of air blows it off the line in just a fraction of a second.”给出吹走不合格物品所用的东西。可直接提取原文信息。
60．本题是开放性试题，答案不唯一，观点基于文中事实。文章告诉我们光学分选技术十分强大，在很多领域帮助人们高效、精准地分拣物品，科技能够解决现实中的难题。例：Technology like optical sorting can help us solve difficult sorting problems efficiently and accurately.
61．例文：
My favourite invention is the bicycle. It was invented about 200 years ago and has changed our lives in many ways.
The bike is used for travelling short distances. It is cheap, fast and good for our health. Riding a bike also helps protect the environment because no gas is needed. Every morning, I ride my bike to school. It takes me only ten minutes.
I think the bicycle is one of the most useful inventions in the world. It is not only a way of transport, but also a way to live a healthy life.
【详解】写作步骤
[第一步：审题立意]
确定文体：说明文，以一般现在时和一般过去时为主
明确要点：最喜欢的发明是什么/它的用途/它为什么重要
确定人称：第三人称 (it) 和第一人称 (I)
注意事项：至少使用一个被动语态 (如 It was invented.../It is used for...)；不得出现真实信息；词数80-100
[第二步：构思布局]
三段式结构：
开头段：点明最喜欢的发明，介绍其发明时间或背景
主体段：
第一层：介绍用途
第二层：介绍个人使用体验
结尾段：说明重要性，升华主题
[第三步：要点展开]
要点一：最喜欢的发明
My favourite invention is the bicycle. It was invented about 200 years ago and has changed our lives in many ways./My favourite invention is the smartphone, which was invented in the late 20th century./Among all the inventions, I like the Internet best because it connects the whole world./The air conditioner is my favourite invention because it makes our life more comfortable./I think the camera is the most wonderful invention ever created.等
要点二：用途
The bike is used for travelling short distances. It is cheap, fast and good for our health. Riding a bike also helps protect the environment because no gas is needed./The smartphone is used for calling, texting and surfing the Internet./People use the Internet to search for information and communicate with others./The air conditioner is used for cooling rooms in summer and warming them in winter./The camera is used for taking photos and recording videos./The washing machine is used for washing clothes automatically and it is very easy to use./We can use it to.../It helps us.../ It allows us to...等
要点三：个人体验
Every morning, I ride my bike to school. It takes me only ten minutes./I use my smartphone to look up new words and practice English listening every day./I often use the Internet to do research for my school projects./In summer, I turn on the air conditioner when I do my homework at home./Every weekend, my mother uses the washing machine to wash all our dirty clothes./I took many photos with my camera during our school trip last spring.等
要点四：重要性
I think the bicycle is one of the most useful inventions in the world. It is not only a way of transport, but also a way to live a healthy life./The smartphone is important because it keeps us connected with the world./Without the Internet, our life would be much slower and less convenient./The air conditioner creates a comfortable living environment all year round./The washing machine makes housework much easier and gives us more time to enjoy life./The camera helps us keep beautiful memories forever./I can’t imagine life without it./It has greatly changed the way we live and work.等
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