拼十年寒窗挑灯苦读不畏难；携双亲期盼背水勇战定夺魁。如果你希望成功，以恒心为良友，以经验为参谋，以小心为兄弟，以希望为哨兵。

选修7Unit 2

李仕才

考点规范练 (选修7　Unit 2)

【短文语法填空】

阅读下面材料，在空白处填入适当的内容(1个单词) 或括号内单词的正确形式。

A 19-year-old girl posing for a photo on the railroad tracks was hit and killed by a train on Saturday afternoon. The girl, __1__ name has yet to be released, was __2__(report) posing for a selfie on a track in a village, Guangdong province. The section of the railway is famous for its beautiful rose blossoms.

Witnesses said that the girl did not realize a train was approaching. There were many visitors __3__(take) photos alongside the tracks, and some people shouted warnings, __4__ no one succeeded in getting the girl’s attention. __5__ employee got off the train to examine the girl and called the police immediately __6__ the accident occurred. __7__(late), she was sent to a nearby hospital by ambulance. According to the nurse on duty that day, the victim showed no sign of life upon her arrival at the hospital.

This is not the first time that a visitor __8__(kill) by a train on that section of the tracks, said one of the villagers. More and more visitors, especially young people, are finding their way onto the train lines, especially those near flowerbeds and spring blossoms. They like to photograph __9__(they) in the scenic spots.

Local police warned people that the new trend of taking selfies while standing on train tracks puts many people’s lives __10__ risk.

【参考答案】

1. whose 2. reportedly 3. taking 4. but 5. An

6. after 7. Later 8. has been killed 9. themselves 10. at

Ⅰ.阅读理解

A

Each year,hikers and mountain bikers get lost or injured in the wilderness.Search and rescue efforts can involve 20 or more people.But a new “smart” drone(无人机) can follow hiking trails(小路) without a pilot’s assistance.This could allow rescuers to search more efficiently.

Scientists outfitted a craft with a single camera.As the drone’s “eye”,the camera pointed forwards.But having an eye wasn’t enough.The drone also needed a “brain” to understand what it was seeing.And that brain would have to recognize what constitutes a trail.Camera images,however,can be very difficult for a computer to interpret,study leader Alessandro Giusti notes.So he and his team used photos of forest trails to train their drone’s neural network(神经网络).

They attached three GoPro cameras to a single headband.One camera pointed straight forward.The other two were directed 30 degrees to the right and left of the centre.A hiker put the package on and then hit the trails in a forested part of Switzerland.Over several weeks,the cameras recorded a total of 8 hours of video covering 7 kilometres of trails.

The researchers then divided the video into individual still images to train the neural network.The network learned to identify what a trail looked like.The team then tested the program with unused images from the video.The computer did a slightly better job than the people had in correctly classifying the images.This meant the drone was ready to navigate the real world on its own.Giusti and his team took their now “smart” device to a forest with trails that had not been used in the drone’s training.It flew along the path,constantly adjusting its direction based on the images coming in through its camera.

The drone didn’t perform as well in real-life as it did in the lab,Giusti admits.That’s because the drone’s camera took lower-quality images than the cameras that had been used to train it.As a result,the images being taken by the drone looked different,he explains.This confused its neural network.

“It’s an exciting use for neural networks,” says Christopher Rasmussen,a computer-vision scientist who was not involved with the study.“However,the problems faced in the experiments show that there are still some important issues to be worked out.”

1.The “smart” drone has been created in order to help 　　　. 

A.find travelers who get lost

B.ensure the safety of travelers

C.deliver necessities to travelers

D.show travelers the way to a place

2.While being tested to classify the images in the lab,the computer 　　　. 

A.did as well as the people

B.did a lot better than the people

C.did much worse than the people

D.did a little better than the people

3.Why didn’t the drone perform well in the forest?

A.The light in the forest was very poor.

B.The trees or bushes covered the trails.

C.The drone couldn’t fly very low there.

D.The pictures taken were of poor quality.

4.What is Christopher Rasmussen’s attitude towards the results of the experiments?

A.Critical.　　　　　　　B.Doubtful.

C.Objective. D.Optimistic.

B

(2016·石家庄调研检测)

Shopping centres,stadiums and universities may soon have a new tool to help fight crime.

A California company called Knightscope says its robots can predict and prevent crime.Knightscope says the goal is to reduce crime by half in areas the robots guard.

William Santana Li is the chief executive officer of Knightscope.He says,“These robot security guards will change the world.Our planet has seven billion people on it.It’s going to quickly get to nine billion people.The security equipment that we have globally is just not going to develop that fast.The company’s Autonomous Data Machines can become the eyes and ears of law enforcement (执行).”

“You want it to be machines plus humans.Let the machines do the heavy and sometimes dangerous work and let the humans do the strategic decision-making work,so it’s always working all together.”

The machines are one and a half meters tall and weigh 136 kilograms.They do not carry weapons but they have day-and-night time video cameras which are able to turn 360 degrees and can also sense chemical and biological weapons.

Some people may become concerned about their privacy,especially in connection with the video recordings.Some people may worry that such recordings will appear on the Internet.Eugene Volokh,a law professor at the University of California,says the machines have to be used in the right way and it will be interesting to see how state laws deal with this kind of video.

William Santana Li says there is a long waiting list for the robots in the US.Workers in the company are working overtime to meet the demands of the market.At least 25 other countries are also interested in these robotic security guards.

5.What can this new tool do for humans?

A.Make strategic decisions.

B.Keep watching day and night.

C.Carry heavy weapons.

D.Stop crime autonomously.

6.Why are people worried?

A.Their privacy may be let out.

B.The robots are very expensive.

C.Robots will replace humans.

D.They will be out of work soon.

7.Which of the following can be the best title of the text?

A.Robots Are Becoming More Popular

B.Robots Contribute a Lot to the World

C.Robots Are in Great Demand Now

D.Security Robots Could Help Cut Crime

【巩固】

What is the first thing you notice when you walk into a shop? The products displayed at the entrance? Or the soft background music?

But have you ever notice the smell? Unless it is bad, the answer is likely to be no. But while a shop’s scent may not be outstanding compared with sights and sounds, it is certainly there. And it is providing to be an increasing powerful tool in encouraging people to purchase.

A brand store has become famous for its distinctive scent which floats through the fairly dark hall and out to the entrance, via scent machines. A smell may be attractive but it may not just be used for freshening air. One sports goods company once reported that when it first introduced scent into its stores, customers’ intension to purchase increased by 80 percent.

When it comes to the best shopping streets in Pairs, scent is just as important to a brand’s success as the quality of its window displays and goods on sale. That is mainly because shopping is a very different experience to what it used to be.

Now the rise of electronic commerce (e-commerce)has opened up famous brands to a wider audience. But while e-shops can use sights and sounds, only bricks-and-mortar shops(实体店)can offer a full experience from the minute customers step through the door to the moment they leave. Another brand store seeks to be much more than a shop, but rather a destination. And scent is just one way to achieve this.

Now, a famous store uses complex man-made smell to make sure that the soft scent of baby powder floats through the kid department, and coconut scent in the swimsuit section. A department store has even opened a new lab, inviting customers on a journey into the store’s windows to smell books, pots and drawers, in search of their perfect scent.

1. According to the passage, what is an increasingly powerful tool in the success of some brand store?

A.Friendly assistant.

B.Unique scents.

C.Soft background music

D.Attractive window display.

2. E-shops are mentioned in the passage to _______ .

A. show the advantages of brick-and-mortar stores

B. urge shop assistants to change their attitude

C. push stores to use sights and sounds

D. introduce the rise of e-commerce

3. Which statement would the writer agree with?

A.Put different shop on the products on display.

B.Ask every shop assistant to wear light perfume.

C.Place fragrant flowers in the shop

D.Expose some coffee bean to air inside a coffee shop.

4. The main purpose of the passage is to ______ .

A. compare and evaluate

B. examine and assess

C. inform and explain

D. argue and discuss

【语篇解读】本文是一篇说明文。文章介绍了采用香味提高销售量的理念。文章讲述了香味对于传统实体店的影响。各大品牌店都加强了味觉对顾客消费欲求的刺激，并根据商品不同调节香味。

1. B【解析】 细节理解题。根据第二段＂But while a shop’s scent may not be outstanding compared with sights and sounds, it is certainly there. And it is providing to be an increasing powerful tool in encouraging people to purchase.＂可知，一些商店的成功中，独特的香味起着重要的作用。故选B。

3. D【解析】推理判断题。根据第三段的句子＂A brand store has become famous for its distinctive scent which floats through the fairly dark hall and out to the entrance, via scent machines. A smell may be attractive but it may not just be used for freshening air.＂可知，作者认为气味在商店的成功方面起着重要的作用，所以他 认为咖啡店应该将咖啡豆暴露于空气中。故选D。

4. C【解析】主旨大意题。这篇文章主要是告诉读者香味对购物心理的影响，所以重在介绍和解释香味对 于实体店的影响。故选C。Ⅱ.七选五阅读

People have different preferences towards available life options.Same is true for the statement “Health is wealth”.What exactly is it?　1　 Or a comprehensive statement that indicates health and wealth are linked to each other? 

People nowadays think the statement means when a person is healthy,he is capable of producing wealth.　2　 As a result,he/she won’t be able to earn income for an independent living.This explanation is partially true but the deep meaning of this claim can be understood by the words of the great ancient Roman poet Virgil:“The greatest wealth is health.”What Mr.Virgil tried to show is that the greatest wealth is health,not money or worldly items.There is nothing more valuable in life than having good health. 

Nowadays people are influenced by wealth improperly that they don’t even bother about their health,the greatest wealth.　3　 A person with poor health is unable to enjoy the pleasures of life.Therefore,we should keep our health in the best way. 

　4　 For example,spending time in a natural environment and drinking enough water.Physical exercise is also necessary as it keeps a person smart and healthy.Eating a balanced diet keeps people away from different illnesses and diseases.It is said that:“Early to bed and early to rise,makes a man healthy,wealthy and wise.”Abandon unhealthy habits because they harm internal parts of our body.　5　 One should always remember,living a healthy life can be the greatest gift of life. 

A.Some people are so poor,and all they have is money.

B.It refers to the abundance of money and worldly items.

C.A simple preference that means health is superior to wealth?

D.They don’t realize that without health there is no real happiness.

E.On the contrary,if one is not healthy,he/she cannot work productively.

F.Always be optimistic and cheerful because:“Laughter is the best medicine.”

G.There are lots of methods and practices through which a person can stay healthy.

Ⅲ.书面表达

(2016·郑州第二次质量预测)

假设你校学生会定于4月10日组织一次高三学生的登山活动,请根据下面表格内容,以学生会的名义用英语写一则通知,欢迎同学们积极参加。

注意:1.词数100左右;

2.可以适当增加细节,以使行文连贯;

3.通知的格式已为你写好,不计入总词数。

参考词汇:邙山Mangshan Mountain;报名sign up;征文比赛essay contest

Notice

Student Union

March 30

考点规范练(选修7　Unit 2)

Ⅰ.【解题导语】本文是说明文。瑞士科学家尝试研究一款无人机来帮助营救迷路的旅行者。

1.A　细节理解题。由第一段中的“...follow hiking trails without a pilot’s assistance.This could allow rescuers to search more efficiently.”可知,科学家研制这款无人机是为了使其帮助救援人员找到迷路的旅行者。

2.D　细节理解题。由第四段中的“The computer did a slightly better job than the people had...”可知,在实验室测试时,电脑比人在照片分类方面做得稍好一些。

3.D　细节理解题。由倒数第二段中的“That’s because the drone’s camera took lower-quality images than the cameras that had been used to train it.”可知,无人机之所以在森林中测试效果不好是因为其在森林中拍的照片质量差,不容易识别。

4.C　推理判断题。由最后一段中的“It’s an exciting use for neural networks...,”及“However,the problems faced in the experiments show that there are still some important issues to be worked out.”可推断,克里斯托弗·拉姆对该研究成果持客观态度。

【解题导语】本文是一篇说明文,主要介绍了一款新型的预防犯罪的机器人。

5.B　细节理解题。根据第五段的第二句“They do not carry weapons but they have day and night time video cameras which are able to turn 360 degrees and can also sense chemical and biological weapons.”可知,这种机器人的功能就是能够日夜不停地执勤站岗。

6.A　细节理解题。根据倒数第二段的第一句“Some people may become concerned about their privacy,especially in connection with the video recordings.”可知,一些人担忧这种机器人所携带的摄像机会记录其隐私,其隐私有可能会被泄露。

7.D　主旨大意题。根据文章第一段并结合全文的整体内容可推知,本文主要介绍了一种新型的预防犯罪的机器人。

Ⅱ.【解题导语】本文是议论文。健康是人生在世最大的财富。

1.C　根据本空后的Or...可推测,本空与下一句是对“健康即财富”的两种不同理解,故C项“仅仅是一种偏爱,意味着健康比财富重要?”符合此处语境。

2.E　本空上一句说“当一个人健康时,他就能创造财富”,那么“相反,当一个人不健康时,他/她就不能有效率地工作”,因此不能挣到可以独立生活的收入。

3.D　根据上一句内容可知,人们甚至不关心自己的健康。D项顺接上句,表示“他们意识不到没有健康就没有真正的幸福”。D项中的They与上一句中的they指代一样,都指people。

4.G　本空后列举的就是人们“可以保持健康的多种方法和做法”。

5.F　本段讲的是人们保持健康的方法,故F项“总是乐观和快乐,因为‘笑是最好的良药’”符合此处语境。

Ⅲ.Notice

In order to encourage Senior Three students to take exercise and relax themselves,we’re going to organize a mountain-climbing activity on April 10.We’re to gather at the school gate and start at 7:20 am by bus and get back at 7 pm.We’ll climb Mangshan Mountain in the morning,on the top of which we’ ll have a picnic at noon.In the afternoon we’ll be divided into groups and have a free time.Remember to take photos and make notes for the photo exhibition or the essay contest to be held later at our school.Besides,take lunch and drinking water with you.If you want to join in,please come to Student Union and sign up before April 5.

Student Union 

March 30 

2019高考英语一轮选练习题Unit2Robots（含解析）新人教版选修7(1)