Unit 6 When was it invented？单元话题阅读理解专练(含答案+解析)-2025-2026学年九年级英语（人教版）

Unit 6 When was it invented
单元话题阅读理解专练
一、阅读理解
The first chocolate was eaten by people in South America hundreds of years ago. In those days, the people did not really eat chocolate. They used the cocoa bean（可可豆） to make a chocolate drink and they enjoyed it very much. Many years later, the cocoa bean was brought to other countries and people came to love the taste of chocolate.
In 1824, John Cadbury opened a small shop in Britain. One of the things he sold was chocolate drink. In 1831, he opened a factory to make chocolate drink. He wanted to encourage people to drink chocolate instead of other drinks. A few years later, a man called Joseph Fry found a way to make chocolate bars（条状巧克力）, and so far the first time people had the chance to eat chocolate instead of only drinking it. But at that time chocolate was very expensive and only the rich people could buy it. Later, more and more chocolate bars were produced and sold, and it became cheaper.
However, at first only plain chocolate（a kind of chocolate without milk and with very little sugar）was produced. Milk chocolate came later and this was made by adding milk to the chocolate. The first milk chocolate bar was made in Cadbury's factory in 1897.The most famous chocolate, Cadbury's Milk Bar, was made in 1905.It has been the most popular chocolate in Britain and around the world for over 100 years. The Cadbury factory is still in Britain and the chocolate produced there is eaten all over the world. Every year, thousands of visitors visit the factory in order to see how chocolate is made.
（1）Hundreds of years ago, people first began to drink chocolate in .
A．South America B．South Africa C．Britain D．Australia
（2）John Cadbury opened a factory to make chocolate drink in .
A．1824 B．1831 C．1897 D．1905
（3）People had the chance to eat chocolate instead of drinking it for the first time .
A．when chocolate was cheaper
B．when more and more chocolate was produced
C．when John Cadbury started to make chocolate drink
D．when Joseph Fry found a way to make chocolate bars
（4）At first, not many people bought chocolate .
A．because it was very expensive
B．because people didn't like the taste
C．because they wanted to have other drinks
D．because there was no chocolate sold in the shops
2．阅读理解
The biggest secret about invention is that anybody can do it! Perhaps this sounds crazy, but it's true. Maybe you have the wrong idea about invention, so read on to discover the truth.
Wrong idea 1: An invention has to be something completely new.
Invention means creating something "new", but the idea could come from something that already exists (存在) . The Wright brothers, for example, got the idea of 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 invention possible. Take Mozart for example. He was born with a talent for musical composition. But other factors were also important for his creativity. His father was a music teacher, and Mozart practiced for hours every day, from the time he was four years old. 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.
Don't believe that you can't invent anything when you are young. Here are two examples of young inventors: Louis Braille went blind when he was a child. When he was fifteen, he invented a system of reading and writing for blind people that is still used in most countries today.
As a young man, George Nissen was watching some artists performing in a show. He watched how they fell into the safety net and then jumped back up again. This gave him an idea, and he invented the trampoline (蹦床).
（1）_____________got the idea of building a "flying machine" from watching birds.
A．Mozart B．George Nissen
C．Louis Braille D．The Wright brothers
（2）The underlined word "inspiration" probably means "_____________" in Chinese.
A．态度 B．品质 C．灵感 D．能量
（3）The writer wants to tell us _____________in Wrong idea 2.
A．Mozart is a talented musician
B．successful creators keep working hard
C．not to give up the wrong question
D．many successful examples
（4）Which of the following is the writer's opinion
A．Anybody can do inventing.
B．Inventors are born，not made.
C．Inventors are always old people.
D．An invention has to be something completely ne.
（5）The best title for the passage would be "_____________".
A．How to perform in a show B．Be a composer
C．How to help blind people D．Be an inventor
3．阅读理解
Hover Camera
Wang Mengqiu, the inventor of Hover Camera, was born in Hangzhou in 1982. He once studied at Stanford University in the United States. He became famous overnight (一夜成名)because of the invention.
Forget selfie sticks(自拍杆)! Compared with other cameras, Hover Camera has many advantages.
*It can fly and stay in midair, track your face and even follow you to make sure it gets the perfect picture.
*It can be controlled by using a smartphone.
*It records movements with a 13MP camera and takes 4K video.
*It is the best choice for weddings, sports games and holidays.
Mr. Wang also said, "The main design consideration is easy and safe to take for the users. It's .very light and small. It can be folded(折叠) in two, so it can be easily put into a bag. When the power is low, it can land on the ground safely on its own. "
It's reported that the company has raised $ 25 million to produce it. Hover Camera can be bought now. The price is $ 599.
（1）Hover Camera can.
A．swim in the water B．fly in midair
C．change its weight D．be used as a phone
（2）The underlined word "track" means "___________".
A．pull B．follow C．push D．show
（3）According to the passage, why is Hover Camera easy and safe to take
A．Because it's light and small.
B．Because it can be folded in three.
C．Because it doesn't need power.
D．Because only a smartphone can make it land.
（4）Which is NOT mentioned in the passage
A．How can we control Hover Camera B．When can we buy Hover Camera
C．How much is Hover Camera D．How popular will Hover Camera be
4．阅读理解
Who invented toys It's hard to believe millions, maybe billions of people have invented toys. Most of these people are kids. Kids invent toys from all kinds of materials, such as stones, sticks, paper, even clothes. And these toys are in different shapes; round, square, and so on.
Sometimes adults invent toys, too, but in many cases (在许多情况下) , they don't actually invent the toy but take a toy that has been invented somewhere before and make it popular. Take the yo-yo for example. Yo-yos have been around for thousands of years. We know this because yo-yos have been found in ancient graves (坟墓) in some countries. This is how we know that stone yo-yos were used back in ancient Greece. In the 1800s, they became very popular as children's toys, first in England and then in the United States. Then people got tired of them for a while until Donald Duncan went into the yo-yo business. He hired"yo-yo men" to demonstrate (示范) and sell yo-yos door to door. This way, yo-yos got popular little by little. Today the name Duncan still goes with yo-yos, one of the most popular toys around the world.
Another example is teddy bears. Teddy bears, one of the most popular toys, were named after a president of the United States, although he didn't invent them. President Teddy Roosevelt was a hunter (猎人) . He was good at hunting and on one of his hunting trips he had met a bear. That led to editorial (社论) cartoons showing pictures of President Roosevelt and a cute little bear. Somehow that led to cute, sewed (缝制的) bears for little kids to play with.
（1）According to the passage，most toys were invented by ___________.
A．mistake B．accident C．children D．adults
（2）The underlined word "hired" probably means "___________" in Chinese.
A．支持 B．反对 C．雇佣 D．销售
（3）From the second paragraph we can know yo-yos___________.
A．were popular first in the United States
B．were taken to England from America
C．were always popular in the United States
D．were popular again because of Duncan
（4）Teddy Roosevelt ___________.
A．was a president of the United States
B．invented teddy bears
C．was a cartoon editor
D．took photos of a bear
（5）Which of the following is WRONG
A．Yo-yos were not popular in the United States for a while.
B．Yo-yos were popular in England.
C．Teddy Bear was a president's name.
D．Children can invent toys with almost all kinds of things.
5．阅读理解
Mip Mip, a playful robot, was developed by a Canadian toy maker named Wowwee. It stands 19 cm tall. You can control it simply with your gestures or a smartphone. Mip can run, balance and dance on two wheels. It can also bring a bottle of water.
Android Wear Google is developing a smart watch called Android Wear. The watch uses a touch screen and voice control. Simply say "OK, Google" to ask whatever you want to know. For example, say "OK, Google. Where's the nearest toy store " Your watch will tell you the answer on Google Maps.
Le Pen Do you like listening to music while doing homework If you do, you will like Le Pen. With a music player planted inside, Le Pen plays music when you write on paper. The music stops when you stop writing. So if you want to enjoy more of your favorite songs, keep on writing.
One Wheel In the near future you may find a new way to escape traffic: a self- balancing skateboard called One Wheel. It can go as fast as 19 km an hour. On a single charge, it can take you as far as 7～10 km.
（1）If you want to enjoy music while writing, you can choose___________.
A． B．
C． D．
（2）According to the passage, Android Wear can_________.
A．go as fast as 19 km an hour
B．run, balance, dance and even serve you
C．tell you how to get to some places
D．play music while you are writing on paper
（3）What's the best title for the passage
A．Four new cool inventions B．How to use Le Pen
C．Four useful robots D．The smart watches
6．阅读理解
The Internet company Google is testing its newest high-tech equipment, Google Glass. Most of the technologies for Google Glass are already used on smart phones. Google has taken those same technologies and added them to eyeglasses frames（眼镜架）. The company describes the glasses as wearable computers that would change the way people see others and the world.
Google Glass is a tiny computer which has a tiny video screen and a camera that connect wirelessly（无线地） to the Internet through WIFI, a smart phone, or a table computer. You can make and receive calls, send and receive texts, take pictures, record video or surf the web. You can operate（操作） Google Glass using your voice.
Professor Marcia Dawkins is one of the people who have been a chance to test out Google Glass. She said, "I thought this is something I am sure to need for my classroom and hopefully for my personal life, too."
Through the glass, Professor Marcia Dawkins has been recording video while biking. She also has been able to talk to her sister in Thailand, and she plans to use the device to teach a public speaking class.
（1）Google Glass would change the way people see the world as .
A．a smart phone B．sunglasses C．a computer D．a TV set
（2）We can do lots of things with Google Glass EXCEPT _______.
A．making calls B．recording video
C．biking D．teaching
（3）What does Professor Marcia Dawkins think of Google Glass
A．Helpful. B．Useless. C．Expensive. D．Boring.
（4）How can we make Google Glass work
A．By using our ears. B．By using our eyes.
C．By using our noses. D．By using our mouths.
7．阅读理解
I'm sure you look into the mirror several times a day. In fact, we can't live without mirrors. Today mirrors are everywhere A from your room to your father's car. They are helpful in many ways. The mirror has a long history. But do you know who invented it and when it was invented
People started using mirrors a long time ago. The first mirrors used were natural mirrors such as reflection in water. The first man-made mirrors were made out of the rock. Later, people used different metals such as bronze（青铜） to make mirrors. Throughout history, different types of mirrors have been used in many different cultures at the same time.
The first glass mirror was invented by a German named Justus Von Liebig in 1835.He used a silvering（镀银） technique to produce the glass mirror. Today aluminum is the main metal used for mirror.
Today, mirrors come in various shapes and sizes. They are used for different reasons. We usually start our days by looking into the mirror in the bathroom. We also use them often during the day to keep ourselves tidy.
Mirrors are important for cars too. If cars don't have mirrors, it's impossible to drive. This is because drivers can't see other cars coming. Of course, that would lead to many car accidents. It is said that breaking a mirror causes seven years of bad luck. So, look after your mirrors well.
（1）The first paragraph mainly tells us ________.
A．the development of mirrors B．the shapes of mirrors
C．the mirror is useful to us D．the mirror is bad for us
（2）What were the first man-made mirrors made out of
A．Glass. B．Bronze. C．Rock. D．Stone.
（3）Who invented the first glass mirror
A．A Frenchman called Justus. B．A German called Justus.
C．A Japanese called Justus. D．The passage doesn't tell us.
（4）Which is the RIGHT order according to the history of mirrors
A．natural-rock-bronze-glass B．rock-bronze-glass-natural
C．bronze-rock glass-natural D．natural-bronze-rock-glass
8．阅读理解
We all know that many inventions have changed our life a lot. They play important roles in our daily life. Here are some interesting inventions.
Morpher
Some people refuse to wear helmets（头盔）because they're thick and heavy. Morpher is a bike helmet made of plastic. It is just as strong as traditional helmets, but it can be folded（折叠）almost completely flat, making it easier to carry. Morpher may be avaiable for sale in stores in the near future.
HyperAdapt
Have you ever seen the movie Back to the Future Maybe everyone wants the pair of shoes in the movie that can tighten or loosen by themselves. Now, thanks to the Shoe Factory, the dream is realized. When you push a button on the shoe, HyperAdapt can tighten or loosen around the feet.
Flyte
Flyte is a light bulb that can float（漂浮） and turn. Flyte has been popular with most people since it came out in January. The company also introduced a lot of similar products, including a planter, Lyfe, which came out in June.
Little Printer
It looks lovely and is called Little Printer. This machine can print news headlines（摘要）, riddles and other things on a roll（卷） of paper. If you want to make your own little newspaper, don't forget to use it.
（1）What's the main use of the Little Printer
A．To protect our heads more safely.
B．To tighten or loosen by themselves around the feet.
C．To float and turn in the water.
D．To print news headlines, riddles and other things.
（2）What kind of invention can float according to the passage
A．Morpher. B．Little Printer.
C．Flyte. D．HyperAdapt.
（3）Which of the following is WRONG according to the passage
A．Maybe everyone wants the pair of shoes in the movie Back to the Future.
B．You can make your own little newspaper with the Little Printer.
C．Flyte has been popular with most people since it came out in February.
D．Morpher can be folded almost completely flat, making it easier to carry.
9．阅读理解
Many people thought a computer wasn't supposed to be able to beat a top master at the ancient Chinese game, Weiqi, for at least another 10 years. But AlphaGo, an artificially intelligent system (人工智能系统) designed by Google, made it. It easily beat Lee Sedol last year, one of the best players in the world. It challenged the world's top players to show how much progress it had made over the past few years.
In late May, 2017, AlphaGo appeared in China and played against 19-year-old Ke Jie in Wuzhen, China. He is No. 1 player now in the world. However, the result wasn't out of people's expectation. He lost the match. Though Ke Jie tried his best and he once saw the victory just a step away, he lost his best chance when he became excited.
At the press conference (新闻发布会) after the match, Ke Jie was interviewed by the reporters. He said he had realized how powerful AlphaGo was, and it was getting perfect. When a Chinese reporter asked him in English, the reporter spoke so fast that the interpreter (口译员) couldn't catch him. Ke Jie got kind of angry and told him that it was unnecessary for two Chinese to speak in English. The reporter apologized to him and offered to ask him for a coffee.
The cat and mouse game is over, but the challenge between man and robots will still go on.
（1）Which was the most probable date when Ke Jie played against AlphaGo
A．May 5. B．May 23. C．May 18. D．May Day.
（2）Why did Ke jie get angry at the press conference
A．Because he lost the game.
B．Because the reporter couldn't catch the interpreter.
C．Because the reporter asked him in English.
D．Because the reporter wasn't able to speak Chinese well.
（3）According to the passage, which of the following statements is TRUE
A．People thought a computer could beat humans many years ago.
B．Ke Jie was expected to lose the match.
C．Ke Jie asked the reporter for a coffee.
D．AlphaGo had great trouble winning the game last year.
（4）AlphaGo is ______.
A．Ke Jie B．Lee Sedol
C．a Weiqi match D．an artificially intelligent system
10．阅读理解
Bike-sharing has swept across China, with an increasing number of people choosing bike riding instead of driving. The bike that the service company provides has GPS or Bluetooth on it, and those bikes can be easily unlocked with a smartphone and left anywhere in public. Bike-sharing allows people to borrow a bike from one place and return it at another place easily.
In some cities, we can see more and more people riding this kind of sharing-bikes. It's very convenient to use the bikes if you have a smartphone. First, you have to download such an app on your smartphone. Then what you need to do is find a nearest hike through the app, scan the QR code on the bike or connect your phone with the bike over a Bluetooth wireless connection. You will find the bike can be unlocked itself. Then you can enjoy your trip. What's more, the greatest advantage of hike- sharing is that you can easily find one and never worry about where to park it. The cost of riding depends on the time that you spend. Normally, every hour you ride, you need to pay one yuan. It doesn't cost so much, does it
At the same time, some people park the hikes in their own homes. Besides, some people don't value the bikes. Now service companies are trying to solve the problems like being stolen.
Technology and science have changed our social lifestyles. We have to say bike- sharing brings us more convenience without doubt. And we also hope that people can not only enjoy it but also put it to good use.
（1）From the first paragraph, we know ______.
A．bike-sharing is invented in China
B．sharing-bikes are used by some people
C．most people in cities don t drive
D．sharing-bikes can be borrowed anywhere
（2）II you want to use a sharing-bike, you must _________ first.
A．have a smartphone and download an app
B．download an app and pay for the trip
C．unlock the bike and download an app
D．find a nearest bike and borrow it from anyone
（3）Which of the following is NOT mentioned in this passage
A．Bike-sharing is very cheap.
B．Sharing-bikes may be stolen.
C．Sharing-bikes are easy to unlock.
D．Bike-sharing is a kind of green transport.
（4）The passage probably comes from a ________.
A．science textbook B．tourist guide
C．website news report D．restaurant menu
答案解析部分
1．（1）A
（2）B
（3）D
（4）A
文章大意：主要介绍了巧克力的事情。
（1）细节理解题。根据文中语句“he first chocolate was eaten by people in South America hundreds of years ago.”可知，开始吃巧克力是在南美，故选A。
（2）细节理解题。根据文中语句“In 1831, he opened a factory to make chocolate drink.”可知，在1831年开的工厂做巧克力饮品，故选B。
（3）细节理解题。根据文中语句A few years later, a man called Joseph Fry found a way to make chocolate bars（条状巧克力）, and so far the first time people had the chance to eat chocolate instead of only drinking it. 可知，当Joseph发现制作条状巧克力的时候，人们不再和巧克力饮品，故选D。
（4）细节理解题。根据文中语句“But at that time chocolate was very expensive and only the rich people could buy it. Later,”可知，不是很多人买巧克力，因为巧克力很贵，故选A。
考查阅读理解。本文涉及细节题，细节题要注意从文中寻找答案。
2．（1）D
（2）C
（3）B
（4）A
（5）D
文章大意：本文介绍了几种关于发明的错误的观点。
（1）细节理解题。根据文中 The Wright brothers, for example, got the idea of building a "flying machine" from watching birds. 例如，莱特兄弟从观察鸟类中获得了制造“飞行机器”的想法。 可知，故选D。
（2）词句猜测题。根据前文对莫扎特的介绍 He was born with a talent for musical composition. But other factors were also important for his creativity. His father was a music teacher, and Mozart practiced for hours every day, from the time he was four years old. 他生来就有作曲的天赋。但其他因素对他的创造力也很重要。莫扎特的父亲是一名音乐教师，从四岁开始，他每天都要练习好几个小时。 可知，此处指爱迪生说成为一个发明家需要“99%的努力和1%的灵感” ，所以inspiration是灵感的意思，故选C。
（3）推理判断题。根据本段中对莫扎特的介绍和爱迪生说的成为一个发明家需要“99%的努力和1%的灵感” 可推知，作者想告诉我们成功的创造者会一直努力工作，故选B。
（4）推理判断题。根据文中所列的关于发明的第三个错误观点 Inventors are always old people. 发明家总是老年人。 和本段所述 Don't believe that you can't invent anything when you are young. 不要认为你年轻的时候什么也发明不了。 可推知，作者的观点是认为“ 任何人都可以发明。 ”，故选A。
（5）细节理解题。根据本文内容所述，本文介绍了几种关于发明的错误的观点，由此可得知，本文是告诉我们怎样成为一名发明家，故选D。
考查阅读理解。首先通读全文，了解文章大意，然后分析问题和选项，从文中找到依据，最后得出正确答案。
3．（1）B
（2）B
（3）A
（4）D
本文介绍了一种可以飞到半空中并悬浮在那的相机。
（1）细节题。 根据文中列举的好处中的第一条 It can fly and stay in mid-air，可知它可以飞到半空中并悬浮在那，故选B。
（2）词义猜测题。 根据文中列举的好处中的第一条track your face and even follow you to make sure it gets the perfect picture，追随着你的脸，甚至会跟随你，以确保它得到了完美的照片，故可知track词义与follow相近，故选B。
（3）细节题。 根据倒数第三段Mr. Wang also said，"The main design consideration is easy and safe to take for the users. It's very light and small．王先生说："这个主要的考虑是使用者携带它的时候很容易也很安全，很轻而且小巧 ，故选A。
（4）细节题。 A选项：根据文中列举的好处中的第二条It can be controlled by using a smartphone，它能被智能手机所控制，故排除A．B选项：根据倒数第二段Hover Camera can be bought later this year它可以在年底购买，故排除B,C选项：根据倒数第一段But a spokesman says the company hopes to sell it for less than $600，可知价格也有被提到 ，故选D。
考查阅读理解。本文涉及细节题，词义猜测题，细节题要注意从文中寻找答案；推断题需要联系上下文，推断出需要的信息。
4．（1）C
（2）C
（3）D
（4）A
（5）C
文章大意：本文主要以溜溜球和泰迪熊两个玩具为例，说明玩具的流行情况。
（1）细节理解题。根据文中第一段 It's hard to believe millions, maybe billions of people have invented toys. Most of these people are kids.很难相信数以百万甚至数十亿的人发明了玩具。这些人大部分是孩子。 可知，故选C。
（2）词句猜测题。根据后面的目的状语从句 to demonstrate (示范) and sell yo-yos door to door. 示范和 挨家挨户地推销溜溜球。 可知，此处指的是 Donald Duncan 雇佣 “溜溜球人” ，所以hired是“雇佣”的意思，故选C。
（3）细节理解题。根据文中第二段 Then people got tired of them for a while until Donald Duncan went into the yo-yo business. He hired "yo-yo men" to demonstrate (示范) and sell yo-yos door to door. This way, yo-yos got popular little by little. 有一段时间人们对它感到厌倦，直到唐纳德·邓肯(Donald Duncan)进入溜溜球行业。他雇了“溜溜球人”来演示和挨家挨户地兜售溜溜球。就这样，溜溜球逐渐流行起来。 可知，故选D。
（4）细节理解题。根据文中最后一段 Teddy bears, one of the most popular toys, were named after a president of the United States, although he didn't invent them.President Teddy Roosevelt was a hunter (猎人) . 泰迪熊是最受欢迎的玩具之一，它是以美国总统的名字命名的，尽管它们并不是美国总统发明的。 泰迪·罗斯福总统是个猎人。可知，故选C。
（5）细节理解题。根据文中最后一段 Teddy bears, one of the most popular toys, were named after a president of the United States, although he didn't invent them.President Teddy Roosevelt was a hunter (猎人) . 泰迪熊是最受欢迎的玩具之一，它是以美国总统的名字命名的，尽管它们并不是美国总统发明的。 泰迪·罗斯福总统是个猎人。可知，C项所述“泰迪熊是一位总统的名字。”是错误的，故选C。
考查阅读理解。首先通读全文，了解文章大意，然后分析问题和选项，从文中找到依据，最后得出正确答案。
5．（1）D
（2）C
（3）A
本文介绍了四项新的发明都很酷。
（1）推理题。根据Le Pen plays music when you write on paper. The music stops when you stop writing当你在纸上写字时，勒庞会演奏音乐。当你停止写作时，音乐就停止了可知， 如果你想边写作边欣赏音乐，你可以选择，故选D。
（2）细节题。根据 Where's the nearest toy store " Your watch will tell you the answer on Google Maps. 最近的玩具店在哪里？你的手表会在谷歌地图上告诉你答案 可知， Android Wear可以告诉你怎么去一些地方 ，故选C。
（3）主旨题。根据本文介绍了四项新的发明都很酷可知，标题应是 Four new cool inventions，四项都很酷的新的发明 ，故选A。
考查阅读理解。本文涉及细节题、推断题，和主旨题，细节题要注意从文中寻找答案；推断题需要联系上下文，推断出需要的信息，主旨题需要通读全文，了解大意之后找出中心思想。
6．（1）C
（2）C
（3）A
（4）D
文章大意：文章介绍了一种新兴产品谷歌眼镜的功能，也引发各种的讨论，有人赞同它给人们带来的便利，也有人对人们的隐私担忧。
（1）细节题。The company describes the glasses as wearable computers that would change the way people see others and the world.可知，眼镜像一个电脑一样，将会改变人们看世界的方式，故选C。
（2）细节题。根据You can make and receive calls, send and receive texts, take pictures, record video or surf the web. 和 she plans to use the device to teach a public speaking class.可知，可以用眼镜打电话，记录录像，教人说话，所以除了C选项骑车以外眼镜都可以做到，故选C。
（3）细节题。根据I thought this is something I am sure to need for my classroom and hopefully for my personal life, too.可知，他认为眼镜 对生活是有帮助的，故选A。
（4）细节题。根据 You can operate（操作） Google Glass using your voice.可知，可以用声音操控眼镜，声音是从嘴里发出来的，所以用嘴巴可以使眼镜工作，故选D。
考查阅读理解。首先读懂文章，接着根据问题寻找答案。本文涉及细节题，细节题要注意从文中寻找答案。
7．（1）C
（2）C
（3）B
（4）A
文章大意：主要介绍镜子的历史。
（1）主旨大意题。通读第一段可知，主要说了镜子的重要性，故选C。
（2）细节题。根据The first man-made mirrors were made out of the rock. 可知，第一个人工制作的镜子是由石头构成的，故选C。
（3）细节题。根据 The first glass mirror was invented by a German named Justus Von Liebig in 1835.可知，第一个发明镜子的人是德国人 Justus Von Liebig，故选B。
（4）细节题。根据The first mirrors used were natural mirrors such as reflection in water. The first man-made mirrors were made out of the rock. Later, people used different metals such as bronze（青铜） to make mirrors. Throughout history, different types of mirrors have been used in many different cultures at the same time.可知，镜子的发展史是自然事物水就是镜子，接下来是人造石头镜子，然后是青铜镜子，最后是玻璃镜子，故选A。
考查阅读理解。本文涉及细节题和主旨题，细节题要注意从文中寻找答案；主旨题需要通读全文，了解大意之后找出中心思想。
8．（1）D
（2）C
（3）C
文章大意：文章主要介绍一些有意思的发明。
（1）细节题。根据This machine can print news headlines（摘要）, riddles and other things on a roll（卷） of paper. 可知，小打印机可以打印新闻摘要等，故选D。
（2）细节题。根据 Flyte is a light bulb that can float（漂浮） and turn. 可知，Flyte可以漂浮，故选C。
（3）推理判断题。根据Flyte has been popular with most people since it came out in January. 可知，Flyte是在一月份被完成的，不是二月份，所以C选项错误，故选C。
考查阅读理解。本文涉及细节题和推断题，细节题要注意从文中寻找答案；推断题需要联系上下文，推断出需要的信息。
9．（1）B
（2）C
（3）B
（4）D
文章详细地介绍了在中国选手柯洁和alphago之间的比赛，详细的说了比赛后的一些事情和人工智能取得的发展。
（1）细节题。答案定位在第二段第一句In the late of May, 2017, AlphaGo appeared in China and played against 19-year-old Ke Jie in Wuzhen，可知在2017年5月末，故选B。
（2）细节题。答案定位在第三段第二行句子When a Chinese reporter asked him in English，the reporter spoke so fast that the interpreter（口译员） couldn't catch him. Ke Jie got kind of angry. 当一位中国记者用英语问他时，记者说得太快了，翻译无法理解他，柯洁有些生气，可知因为记者用英语问他，故选C。
（3）推理题。答案定位在第二段第一行句子He is No. 1 player now in the world. However，the result wasn't out of people's expectation. He lost the matches. 他现在是世界上排名第一的选手，但是，结果不出乎人们的预料，他输了比赛，可知柯洁正如人们所预料的那样输掉了比赛，故选B。
（4）细节题。答案定位在第一段第一行句子But AlphaGo，an artificially intelligent system（人工智能系统） designed by Google，可知AlphaGo是一个人工智能系统，故选D。
考查阅读理解。本文涉及细节题、推断题，细节题要注意从文中寻找答案；推断题需要联系上下文，推断出需要的信息。
10．（1）B
（2）A
（3）D
（4）C
本文是讲述了共享单车在中国越来越受欢迎。如果想使用共享单车，必须要有一个智能手机并下载一个应用程序。它使用起来非常方便，而且价格也很便宜。但是现在有的人不爱惜自行车，到处乱放，还有自行车被偷盗现象，服务公司正试图解决这个问题。毫无疑问自行车共享给我们的出行带来了更多的便利，我们要很好地利用它。
（1）推理题。根据 Bike-sharing allows people to borrow a bike from one place and return it at another place easily自行车共享让人们可以很容易地从一个地方借自行车，然后在另一个地方归还，可知一些人使用共享自行车，故选B。
（2）细节题。根据文中句子“It's very convenient to use the bikes if you have a smart phone. First, you have to download such an APP on your smart phone.”（如果你有智能手机，使用自行车非常方便。首先，你必须在智能手机上下载这样的应用程序。）可知，如果你想使用共享单车，你必须先有一个智能手机并下载一个应用程序，故选A。
（3）细节题。根据文中句子“The bike that the service company provides has GPS or Bluetooth on it. And those bikes can be easily unlocked with a smart phone and left anywhere in public.”可知，共享单车很容易解锁；根据“Now service companies are trying to solve the problem like being stolen.”可知，共享自行车可能会被盗；根据“The cost of riding depends on the time that you spend. Normally, every hour you ride, you need to pay one yuan. It doesn't cost so much, does it ”可知，使用共享单车比较便宜；Bike-sharing is a kind of green transport ，自行车共享是一种绿色交通工具，文章没有提及，故选D。
（4）推理题。A 科学教科 ，B旅游指南，C网站新闻报道，D餐馆菜单，根据本文是讲述了共享单车在中国越来越受欢迎。如果想使用共享单车，必须要有一个智能手机并下载一个应用程序，可知短文来自网站新闻报道，故选C。
考查阅读理解。本文涉及细节题、推断题，细节题要注意从文中寻找答案；推断题需要联系上下文，推断出需要的信息。