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Unit 4 Our Memory 基础+提优练习题
基础练习
一、用括号内所给词的适当形式填空
1. . Smartphones ________ ( not allow ) in the classroom in my school.
2.My father is too tired. Something should ________ (do)to keep him relaxed.
3.China’s Beijing Library ________ (name) “Public Library of the Year” in 2024.
4. Short texts can be seen everywhere. They are short but provide ______ (use) information.
5. A famous kite story is about the American ______(invent) Benjamin Franklin.
6.The railway station is at a ______(distant) of two kilometres from our school.
7.Do you think the newspapers will disappear ______(complete)?
8.You are not supposed ______(cut) in line in public places.
9. If salt ______ (spread) onto the ice, the freezing temperature will be lower than 0℃.
10.The students didn’t understand the question until it ______(explain) again.
11.Hundreds of factories ______ (encourage) to move away or close between 2005 and 2015.
12. Anyone interested in Dunhuang will have heard of Fan Jinshi. Fan ______ (know) to many as “the Daughter of Dunhuang”.
13.Jasmine grows ______ (wide) in China, mainly in Hengzhou, Guangxi.
14.He learned Chinese ______ (rapid) and began writing about his experiences in Chinese.
15.The hard‑working student ______(praise) by the teacher yesterday because of his excellent grades.
16.If you take up new work or new hobbies, you will become open‑minded, talented and ______(create).
17.He often gives speeches about the history and ______(produce) process of paper‑cutting, shadow puppetry and other traditional crafts.
18. . Metals ________ (melt) so that workers can change them into what they need.
19.We were supposed ________ (leave) school at 8:30, but we left 15 minutes earlier.
20. As we all know, ________ (tour) helps people learn about different cultures and places.
二、从方框中选择合适的单词并用其适当形式填空（有一项多余）
expensive office shape certain suit
1. In the past, fireworks were too ______ for people, so they created Datiehua.
2.—I’m not sure whether my advice is helpful to you.
—It ______ is. Every little bit helps.
3.These shoes are very ______ for the people who love running and jogging.
4.Police ______ believe that rules can stop people from doing something dangerous.
5. As we walked through the park, I noticed all those fallen leaves with different ______ and colors lying on the ground.
tour gain melt complete freeze wheel
6.The sun is hot and the snow on the ground is ______.
7.With the development of ______, there are many visitors in Gansu.
8.The rivers and lakes are ______ because it’s thirty degrees below zero outside.
9.The project ______ on time thanks to the hard work of the whole team.
10.After the invention of ______, travelling became faster and more comfortable.
11.Although I didn’t pass the interview, I ______ lots of experience.
press please workshop suit create
12. Cai Lun learned from past experiences and processed bark and old clothes in the ______.
13. He finally got fibre and ______ it to form paper.
14. This new material was ______ to write on.
15. Later Cai Lun showed his ______ to the emperor.
16. The emperor was very ______ and praised him for his great work.
certain create speed up workshop rapid gradual
17. Director Jokelate spent about five years completing the ________ of Ne Zha 2.
18. Keep working hard and you will ________ make progress in your study.
19. According to a new research, ________ training classes can help improve our memory.
20. As technology develops ________, more and more AI tools will be used in the future.
21. With advanced tools, we have ________ the development of 5G applications in many cities.
三、根据语境，用适当的虚词盲填
1. High‑quality wheels have a big impact ________ a bicycle’s use.
2. That super star was wearing ________ pair of sunglasses and fans didn’t recognize him at first.
3. The high‑speed train can’t go ________ the tunnel because there is a huge tree lying in the way.
4. The file on the computer was successfully connected ________ the laptop after several tries.
5. Most of the knowledge he used in his work was gained ________ years of self‑study and on‑site practice.
6.The stones lying on the narrow road result ________ several accidents.
7.The weight of her daughter ________ birth was just over seven pounds.
8.We are responsible ________ taking care of our classmates and helping those in need.
9.This attractive book *The Stars Beneath Our Feet* is ________ ideal gift for any teenager.
10.Some bronze ware in ancient China was often made in the shape ________ a Chinese dragon.
四、单项选择
1. What’s more, bamboo can be made ____ a kind of material for clothes.
A.into B.in C.by D.from
2. ____ years ago, ideas like flying to another city through the air sounded like dreams.
A.Hundred B.Hundred of C.Hundreds D.Hundreds of
3.The fast food ____ isn’t bad for you, but too much of ____ is not good.
A.it;it B.itself;itself C.it;itself D.itself;it
4 Chinese ____ by more and more people from foreign countries today.
A.speaks B.spoke C.is spoken D.will speak
5.—I hear that Jingdezhen Porcelain(瓷器) ____ in Paris last month.
—Wow! Good news.
A.shows B.has shown C.is shown D.was shown
6. When you feel cold air coming through your window, energy ____.
A.wastes B.is wasted C.wasted D.was wasted
7. The new rule will have a great ____ on people’s daily lives.
A.result B.reason C.effect D.decision
8. This new library provides books for children. It offers different kinds of after‑school activities ____.
A.as well B.for sure C.also D.either
9. The world’s first practical telephone ____ by Alexander Graham Bell in 1876.
A.invented B.was invented C.is invented D.invents
10.—Which of the three books do you want to borrow?
—____. I’ve already read all of them and don’t need any now.
A.None B.Neither C.All D.Either
11. His carelessness in the experiment ____ a big mistake, which made his teacher very disappointed.
A.led to make B.led to making C.led making D.led make
12. The serious traffic jam ____ the heavy rain last night, and it ____ many people being late for work this morning.
A. resulted from; resulted in B. resulted in; resulted from
C. resulted from; led D. led to; resulted from
五、按要求完成下列句子
1. The English teacher divided our class into 8 groups in class. (改为被动语态)
Our class ________ ________ into 8 groups by the English teacher in class.
2. People waste a lot of water every day. (改为被动语态)
A lot of water ________ ________ ________ people every day.
3. I am allowed to play computer games by my father on weekends. (改为一般疑问句)
________ ________ ________ to play computer games by your father on weekends?
4. You should send the car to the service centre before it goes wrong. (改为被动语态)
The car ________ ________ ________ to the service centre by you before it goes wrong.
5. Five students were chosen by the teacher to work as volunteers on the Open Day. (改为主动语态)
________ ________ ________ five students to work as volunteers on the Open Day.
6. The phone is made in China. (对画线部分提问)
________ ________ the phone ________?
7. Tea was brought to Korea during the 6th and 7th centuries. (对画线部分提问)
________ ________ tea brought to Korea?
8. A bridge was built by them over the river last year. (改为主动语态)
They ________ ________ ________ over the river last year.
9. Thomas didn’t throw the old magazines away yesterday. (改为被动语态)
The old magazines ________ ________ away by Thomas yesterday.
六、根据汉语意思完成句子，每空一词
1.我的堂兄安德鲁总是想出新主意或发明新东西。
My cousin Andrew always comes up with new ideas or ________ ________ ________.
2.人工智能将对医学和工程等领域产生重大影响。
AI will ________ ________ ________ ________ ________ areas like medicine and engineering.
3.云南的黑茶，尤其是普洱茶，因茶马古道而闻名。
Yunnan’s dark tea, especially Pu’er, got famous ________ ________ the Ancient Tea Horse Road.
4.这项发明使盲人更容易找到路。
This invention ________ ________ ________ for blind people ________ ________ the way.
5.后来，那对夫妇从城市搬到了村庄。
________ ________, the couple moved from the city to the village.
6.超重很容易导致多种疾病。
Overweight can easily ________ ________ many kinds of diseases.
7.他认为人造二氧化碳直接引起了全球变暖。
He believes that man‑made carbon dioxide is directly ________ ________ global warming.
8..发明大大加快了我们的生活，以至于它们经常让我们感到焦虑。
Inventions have ________ ________ our lives so much that they often leave us feeling stressed.
9.人们相信，阅读不仅有利于我们的自我发展，而且很容易做到。
It is believed that reading is ________ ________ good for our self‑development ________ ________ quite easy to do.
10.中国已经制定了一项帮助国民控制体重的计划。
China ________ ________ ________ to help its people with weight control.
11.那条狗似乎遇到麻烦了，因为它无法移动了。
________ ________ ________ the dog was in trouble because it couldn’t move.
12.因此，人类可以用手完成非常复杂的任务。
________ ________, humans can perform very complex tasks with their hands.
13.随着人们越来越富裕，他们能够买得起像小汽车这样的昂贵商品。
As people got richer, they ________ ________ ________ expensive goods like cars.
14.我们班的许多学生正在试图找到提高他们的英语阅读技能的方法。
Many students in our class ________ ________ ________ ________ ________ their English reading skills.
15.面对困难时，我们应当勇敢一些。(suppose)
________________________________________________________________
提优练习
一、补全对话
根据下面对话中的情境，在每个空白处填入一个适当的语句，使对话恢复完整。
(A and B are in a museum.)
A: Look at this interesting thing. It’s so big and strange. 1.________________________?
B: Oh, it’s a great invention called the ancient waterwheel（水车）.
A: The ancient waterwheel? 2.________________________?
B: I think it was invented in the Han Dynasty.
A: 3.________________________?
B: Guess, please!
A: Was it used for having fun?
B: No. It was used for carrying water from the river.
A: Oh, I see. But how?
B: Let’s ask our teacher. He is a learned man and he may know the answer.
A: OK. 4.________________________?
B: I think it’s amazing.
A: 5.________________________. The Chinese are so great!
二、从方框中选取适当的句子完成对话(有多余项)
A: Hey, Lisa! Have you heard about the “electronic pet” of Wuhan University?
B: 1._______ What is it?
A: It’s a robotic fish and it looks like a real one.
B: Really? 2._______
A: It’s 53 cm long, like a medium‑sized fish. The coolest part is its two special joints (关节) in the head and tail.
B: Can it swim like a real fish?
A: 3._______
B: That sounds amazing! Who invented it?
A: A team of scientists at Wuhan University.
B: What is it used for?
A: 4._______ It can collect information like water conditions and fish activity.
B: Wow! 5._______
A.How big is it?
B.No, I haven’t.
C.That’s cooler than I imagined!
D.I would like to buy one.
E.Yes, it can swim with the help of its joints.
F.It’s used to help protect the Yangtze River.
三、阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。
A
How Technology Helps Emperor Penguins
With the development of science and technology, we have learned a lot about animals. Emperor penguins can grow up to 1.2 meters tall, and they are the 1.____ (large) of all the penguin kinds. In 2022, they were listed as endangered animals because the Antarctic sea ice that they live 2.____ is becoming smaller and smaller. Now scientists are using high technology to follow them and learn more about how 3.____ (protect) them.
One of the 4.____ (way) researchers are able to do this is by looking at pictures taken by satellites above the Earth. Large groups of emperor penguins can be seen from space. When scientists first started using satellites to look at the penguins, there were only 28 groups. So far, scientists 5.____ (discover) 66 groups.
Even using satellites, it is so difficult to count how many penguins live in different groups. Scientists can improve population estimates(估计) by watching the area’s weather 6.____ (careful). Measuring the wind speed and temperature can help predict if the penguins gather closely together or spread apart across the ice. If scientists know 7.____ the weather was like when the pictures were taken, they can estimate how many penguins are pictured.
Scientists can also watch penguins’ movements by giving 8.____ (they) special electronic tags. A scanner 9.____ (carry) by a robot, and it can read information on the tags. The robot also uses AI to recognize the penguins. It moves very slowly so that it doesn’t make the birds stressed.
Daniel, one of the penguin researchers, hopes the technology 10.____ (lead) us to a “golden age of research”. Thanks to technology, we are seeing more things that no one has ever seen before.
B
The telephone is one of the most important 1.________ (invent) in human history. Have you ever wondered 2.________ invented it? Alexander Bell is 3.________ (wide) credited（认为是……的功劳）with the invention of the telephone, but little information is available about the exact date 4.________ it was invented.
The first successful telephone call 5.________ (make) by Alexander Bell. Since then, telephones 6.________ ( develop ) and improved significantly. Nowadays, we use smartphones, which are much more advanced than the original telephones.
Bell’s invention changed the ways of 7.________ (communicate). People no longer had to rely on writing letters and wait for days or weeks to receive a response. Thanks to the telephone, we can communicate immediately, connecting with friends and family no matter where they are in the world.
The telephone has changed 8.________ (we) lives in many ways. It has made business 9.________ (convenience), allowed us to stay in touch with loved ones easily, and provided us 10.________ a means of accessing information at our fingertips.
C
The oilpaper umbrella has a history of over 1,000 years in China. There are 1.________ (hundred) of stories about the invention of the umbrella in China. The most popular one has something to do with Lu Ban. It’s said that once he and his wife visited the West Lake. It started raining suddenly. His wife said, “Let’s have a competition. Before sunrise tomorrow, the one who comes up 2.________ a good way to visit the West Lake even on rainy days will be the winner.” Lu Ban thought it was easy. He collected some tools and materials. Then he spent the whole night 3.________ (build) pavilions (亭子) around the lake. When he 4.________ (complete) his work, he felt quite proud.
The next morning, 5.________ Lu Ban talked about his work happily, his wife held something unusual in her hand. It could 6.________ (open) into a round shape. Lu Ban was surprised. He found that the object, made of silk and bamboo, could be opened and closed easily. It was light, beautiful and 7.________ (suit) for daily use. Lu Ban said, “You win. Your invention can protect us from rain better.” So the umbrella 8.________ (invent).
Later, people began to use paper, which was 9.________ (cheap) than silk. To make the umbrella waterproof, people brushed a kind of oil on the surface. So the oilpaper umbrella appeared. Over time, it became 10.________ (wide) loved not only as a tool but also as a symbol of traditional culture.
四、完形填空
A
Homes Get Smarter
Most of us spend all day at school or work. After a long and busy day, all we want to do is return to a 1____ home. Smart technology can turn any home into a nicer place to live. Smart homes have been for 2____ Scottish company Pico Electronics invented a type of technology called X10 in 1975. With X10, household devices（家用装置）, such as lights and alarms, can communicate 3____ each other by using radio waves.
Of course, 5G networks have made smart homes much 4____ than X10. Perhaps the most widely used smart home technology is the voice‑activated assistant. Google Home and Amazon Alexa 5____ users to interact with nearly any device in their home simply by speaking a few words. This is especially 6____ for children and disabled people as they can do things that would usually be too difficult according to How‑To Geek.
Common household appliances（电器） can become smart as well. According to HowStuffWorks, a smart waste bin can keep track of the things you have 7____ away and place an online order for new items. Smart fridges can create dinner lists 8____ the food inside.
But it’s not only about convenience. Smart homes are also perfect for the 9____. By turning off devices that you are not using, smart homes can lower how much electricity you use. As we know, using less energy 10____ that we use fewer natural resources.
1.A.possible B.comfortable C.believable D.terrible
2.A.sometime B.sometimes C.some times D.some time
3.A.with B.for C.of D.at
4.A.further B.stronger C.higher D.cheaper
5.A.allow B.advise C.invite D.order
6.A.common B.awful C.good D.funny
7.A.risen B.given C.taken D.thrown
8.A.replied to B.based on C.interested in D.filled with
9.A.family B.school C.environment D.government
10.A.seems B.feels C.hopes D.means
B
The story of Thomas Edison and the incandescent light bulb is one of the most famous stories in the history of invention. However, the journey from a bright idea to a practical 1____ is far from easy. Many people suppose that Edison simply one day had a great idea and made it work. But the 2____ was that he and his team tested over 1,600 materials for the filament（灯丝） before finding one that worked well.
Edison was 3____ for leading his team at Menlo Park. He believed that success comes from 1% inspiration and 99% perspiration（汗水）. This strong belief 4____ thousands of experiments, most of which ended in failure. Instead of seeing these as a waste of time, he 5____ them as steps closer to success. He once said, “I have not failed. I’ve just found 10,000 ways that won’t work.”
The 6____ of a long‑lasting, practical light bulb didn’t just happen overnight. It required 7____ thinking and a refusal to give up. When others thought it was 8____, Edison saw a challenge to be overcome. He 9____ improved upon his designs, making each version a little better than the last.
Finally, after countless tests, they found that a carbonized bamboo filament could 10____ for over 1,200 hours. This breakthrough 11____ the way for widespread electric lighting. It changed the 12____ people lived and worked, making nights as productive as days.
Edison’s story teaches us that true 13____ often comes from continuous effort and the courage to face difficulties. Every time we turn on a light, we should remember the incredible journey behind this everyday 14____. It reminds us that even the most brilliant ideas need hard work to become a 15____.
1. A. discovery B. creation C. decision D. suggestion
2. A. dream B. plan C. fact D. opinion
3. A. useful B. thankful C. responsible D. ready
4. A. led to B. looked for C. gave up D. put off
5. A. refused B. accepted C. avoided D. forgot
6. A. price B. size C. invention D. sale
7. A. creative B. traditional C. simple D. strange
8. A. impossible B. necessary C. wonderful D. easy
9. A. suddenly B. carefully C. quickly D. finally
10. A. wait B. last C. stop D. stay
11. A. asked B. paved C. blocked D. cleaned
12. A. reason B. place C. time D. way
13. A. luck B. success C. beauty D. health
14. A. game B. object C. toy D. gift
15. A. memory B. reality C. hobby D. choice
C
With over 220 million people aged 65 or older, our country faces big 1._____ in elderly care. We're developing special robots to help take care of the growing 2._____. These robots can do many useful things like 3._____ the elderly to take medicine, helping them walk 4._____, bringing meals, and 5._____ recognizing their emotions through facial recognition.
The robots come in different 6._____. Some are physical helper robots that look like Metal Suits to help weak elderly people move around. Others are companion（陪伴）robots designed to talk and be with 7._____ elderly people. Companies in Shanghai and Shenzhen are leading the development of these technologies. The government has also created the world's first international 8._____ for such robots to make sure they are safe and reliable.
9._____, there are still several problems that need to be solved. The robots are now too 10._____ for most families, often costing between ¥100,000 and ¥500,000. They also have trouble 11._____ difficult situations and can't fully take the place of human caregivers. Privacy（隐私）is another problem 12._____ the robots collect health information.
Experts believe that with 5G and AI technology, future robots will improve a lot. 13._____ may become cheaper, smarter, and better at understanding human feelings. The government is working on more policies（政策）to 14._____ this technology while protecting people's privacy. Meanwhile, some universities also take part in it.
15._____, these robots provide important help with daily tasks. The development shows how China is using new ways to solve social problems, though many challenges remain before they can be widely used in ordinary families.
1.A. chances B. choices C. challenges D. changes
2. A. price B. population C. problem D. pain
3.A. teaching B. advising C. ordering D. reminding
4.A. safely B. quickly C. quietly D. bravely
5. A. still B. already C. even D. almost
6. A. costs B. sizes C. times D. types
7. A. lonely B. happy C. lazy D. sporty
8. A. study B. service C. standard D. skill
9. A. However B. Therefore C. Instead D. Besides
10. A. old B. expensive C. heavy D. strange
11. A. deal with B. dealing with C. do with D. doing with
12. A. otherwise B. though C. unless D. since
13. A. They B. It C. We D. You
14.A. control B. design C. create D. support
15. A. In fact B. In general C. After all D. Above all
五、阅读理解
A
Scientists from China’s Shanghai Jiao Tong University are developing a robot “guide dog” to help blind people. The robot dog is about the size of an English bulldog but a little wider. It has six legs instead of four. The extra legs make it more stable and help it move faster.
The robot is being tested in Shanghai. With the help of cameras and AI, the robot dog can see, listen and speak with blind people. It can help them during daily trips outside and be a “friend” at home.
Blind people can also use a cane(手杖) to control the robot’s walking and running speed. The robot can even recognize the traffic lights—real guide dogs are unable to do that.
Li Fei and Zhu Sibin are helping test the robot. Li is totally blind and Zhu can only see a little. Zhu often uses a cane to move around. “The robot dog will make it easier to get into public places than with real guide dogs. I am happy to join in the test. It could change our lives in the near future,” Li said.
In China, there are about 17.31 million blind people, but there are only about 400 guide dogs. The new robot is trying to solve this problem. “We believe our robot will act as ‘a pair of eyes’ for blind people,” said Professor Gao Feng, one of the scientists. He thinks there could be a large market for these robot dogs.
1.Why do scientists develop the robot dog?
A.To help blind people.
B.To improve AI technology.
C.To beat the British bulldog.
D.To create a six‑legged machine.
2. What is paragraph 2 mainly about?
A.How the robot dog works.
B.Where the robot dog can go.
C.What the robot dog can do.
D.When the robot dog comes out.
3.How does Li Fei help develop the robot dog?
A.He designs it.
B.He helps test it.
C.He brings it into public places.
D.He controls it with a cane.
4. What is Professor Gao Feng’s opinion about the robot dog?
A.It can treat blindness.
B.It costs a lot of money.
C.It has taken the place of real guide dogs.
D.It will have a large number of customers.
B
Imagine having a simple app that works like: When you need help, just open the app, touch the “notOK” button and a message will be sent to five preselected（预先设定的）people, along with a location to show where you are. The message reads: Hey, I’m not OK. Please call me, text me, or come to find me.
US teenagers, Hannah Lucas, and her brother Charlie, have made an app called notOK. People just need to pay a little money each month to use it.
Hannah was inspired to make the app during a dark time in her life. She developed an illness and she couldn’t go to school anymore. Other kids sometimes bullied(欺凌) her about this. She felt sad and wanted to find an app that would allow her to get help when she wasn’t feeling OK. She asked her brother Charlie to find such an app. When they couldn’t find one, they decided to make one themselves.
They came up with some designs for the app first. Charlie took a programming class in summer and built a website for the app. Hannah also shared her idea in her summer class. Some app developers showed interest and decided to help her. At last, the app came out in the US and Canada in January.
Hannah is happy that her app is helping others.
1.Who will know you’re in need when you touch the “notOK” button?
A.Five people who bullied you.
B.Five people who were preselected.
C.Five people who are the developers.
D.Five people who are your family members.
2. What do the underlined words “text me” in Paragraph 1 probably mean?
A.Send me a report.
B.Send me a letter.
C.Send me a message.
D.Send me a newspaper.
3.What’s the main purpose of creating the app?
A.To bully others. B.To make money.
C.To ask for help. D.To build a website.
4. Which one is the right order of the following statements about the invention of the app?
a.Hannah developed an illness.
b.Charlie took a programming class in summer.
c.The app came out in the US and Canada in January.
d.Hannah and Charlie didn’t find such a useful app.
A.c, d, a, b B.c, d, b, a C.a, d, b, c D.a, d, c, b
5.The best words to describe the app are ______.
A.simple and helpful B.pleasant and dangerous
C.expensive and creative D.interesting and preselected
六、阅读表达
The history of traffic lights dates back to the early 19th century in Britain. London was a busy city with horse‑drawn carriages(马车). They often rushed into people, causing many accidents. At the same time, there was a fashion rule in York—women in red showed that they were married and green for unmarried. This gave people the idea for using red and green as traffic signs later.
On December 10th, 1868, British railway engineer J. P. Knight designed the world’s first traffic light with only red and green. A policeman had to pull a belt to change the lights: red meant “stop”, and green meant “go”. At first, it worked well and reduced accidents. However, this traffic light exploded(爆炸) after 23 days. The light was turned off, but the idea stayed alive.
In 1914, electric traffic lights were first used in America. Red and green still did their jobs, then they were safer and easier to see.
In 1927, a Chinese student named Hu Ruding was studying in the US. He noticed drivers sometimes rushed when the light changed. “What if there’s a middle color to slow people down?” he thought. That’s how the yellow light was born, meaning “get ready to stop”. Around the same time, an American policeman named William Potts created the first three‑color traffic lights for all directions. They made crossroads much safer.
These colors were not chosen by chance. Red is easy to see, like a fire alarm, so it means “danger—stop!” Yellow is a warning, like a sign that says “be careful—slow down!” Green, like a forest, tells us “safe to go!” Together, they form a common language that keeps safe every day.
Great ideas come from everyday things. Whether traffic lights or something else, noticing and thinking “what if” can change the world!
1.When did the world’s first traffic light with only red and green appear?
____________________________________________________
2.Who suggested adding a yellow light to traffic signs?
____________________________________________________
3. What does the underlined word “they” refer to in Paragraph 5?
____________________________________________________
4..What’s the title for the passage?
____________________________________________________
5.According to the writer’s opinion, what should we do?
____________________________________________________
参考答案
基础练习
一、用括号内所给词的适当形式填空
1. aren’t allowed 2. be done 3. was named 4. useful 5. inventor
6. distance 7. completely 8. to cut 9. is spread 10. was explained
11. were encouraged 12. is known 13. widely 14. rapidly 15. was praised
16. creative 17. production 18. are melted 19. to leave 20. tourism
二、从方框中选择合适的单词并用其适当形式填空（有一项多余）
第一组
1. expensive 2. certainly 3. suitable 4. officers 5. shapes
第二组
6. melting 7. tourism 8. frozen 9. was completed 10. wheels 11. gained
第三组
12. workshop 13. pressed 14. suitable 15. creation 16. pleased
第四组
17. creation 18. gradually 19. certain 20. rapidly 21. sped up / speeded up
三、根据语境，用适当的虚词盲填
1. on 2. a 3. through 4. to 5. from
6. in 7. at 8. for 9. an 10. of
四、单项选择
1.A 2.D 3.D 4.C 5.D 6.B
7.C 8.A 9.B 10.A 11.B 12.A
五、按要求完成下列句子
1. was divided 2. is wasted by
3. Are you allowed 4. should be sent
5. The teacher chose 6. Where is; made
7. When was 8. built a bridge
9. weren’t thrown
六、根据汉语意思完成句子，每空一词
1. invents new things 2. have a great influence/effect on
3. because of 4. makes it easier; to find
5. Later on 6. lead to 7. responsible for
8. sped up / speeded up 9. not only; but also
10. has made a plan 11. It seemed that
12. As a result 13. could afford expensive
14. are trying to find ways to improve
15. We are supposed to be brave when facing difficulties.
提优练习
一、补全对话
1. What’s it / this?
2. When was it invented?
3. What was it used for?
4. What do you think of it / How do you like it?
5. I agree (with you) / That’s true.（答案不唯一）
二、从方框中选取适当的句子完成对话(有多余项)
1.B 2.A 3.E 4.F 5.C
三、阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式
A
1. largest 2. on 3. to protect 4. ways 5. have discovered
6. carefully 7. what 8. them 9. is carried 10. will lead
B
1. inventions 2. who 3. widely 4. when 5. was made
6. have been developed 7. communication 8. our 9. convenient 10. with
C
1. hundreds 2. with 3. building 4. completed 5. when/while
6. be opened 7. suitable 8. was invented 9. cheaper 10. widely
四、完形填空
A
1.B 2.D 3.A 4.B 5.A
6.C 7.D 8.B 9.C 10.D
B
1.B 2.C 3.C 4.A 5.B
6.C 7.A 8.A 9.B 10.B
11.B 12.D 13.B 14.B 15.B
C
1.C 2.B 3.D 4.A 5.C
6.D 7.A 8.C 9.A 10.B
11.B 12.D 13.A 14.D 15.B
五、阅读理解
A
1.A 2.C 3.B 4.D
B
1.B 2.C 3.C 4.C 5.A
六、阅读表达
1. On December 10th, 1868.
2. Hu Ruding.
3. Red, yellow and green. / The three colors of traffic lights.
4. The History of Traffic Lights（答案合理即可）
5. We should notice everyday things and think “what if”.
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