2021高考英语一轮优练题Unit2Robots（含解析）新人教版选修7

Unit 2 Robots
李仕才
(选修7Unit 2)
【短文语法填空】
按照短文内容，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。

The classic advertisement，which is 1.likely(like) to be just the name of a company，gives information about finding certain products.This kind of advertising is unlikely to be suitable because of the 2petition(compete) in the market place now.What advertisements need to do is 3.to_attract(attract) the public’s attention.Some advertisements 4.are_made(make) up of pictures or the words of experts to show people how good the products are, 5.while others try to create advertisements people like looking at.So they spend much money 6.applying(apply) modern techniques to the advertisements.Modern advertisements combine the 7.highest(high) standards of design with ideas linked to the products.What’s more，these advertisers look 8.for other ways such as humour as well as unusual ideas to make people forget that someone 9.is_trying(try) to sell them something.There are also some public advertisements 10.which aim to help increase public knowledge and make our society a better place for everyone.
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 unders tand 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 th eir 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 w orked 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
(2021·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 qui ckly 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 th e 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
C
From young kids to fitness lovers，to those looking for a laugh，or to families looking for a free movie night，Atlantic Station prepares some days for them to enjoy this year.
Tot Spot—Each Tuesday morning.Atlantic Station's Central Park transforms into every child's dream playground! From 10：00 am to noon，kids can enjoy games，storytelling, toys，music and some very special things.This event begins on April 5 and lasts through September 27.
Wellness Wednesday—Each Wednesday from 6：30 pm to 7：30 pm，Atlantic Station's Central Park becomes the perfect place to find quietness of the mind and body while instructors lead guests through exercises including yoga and
more.Wellness Wednesday welcomes all ages and skill levels.This event begins on April 6 and lasts through September 28.
Improv in the Park—Whole World Theatre，Atlanta's premier improv group，has once again partnered with Atlantic Station to bring a family­friendly night of comedy to the Central Park on the first Wednesday of each month until September.Bring a blanket，relax under the stars and prepare to laugh until your stomach hurts！The hour­long show begins at 8：00 pm.This event occurs on April 5，May 4，June 1，July 6 and August 3.
Movies in the Central Park—Each Thursday night at dusk，guests are invited to bring chairs，blankets，to­go snacks and picnics to Atlantic Station's Central Park.All outdoor screenings are available，weather permitting，so keep your fingers crossed for no The Wizard of Oz­type storms！Be sure to arrive early to find a good seat.
1．Mothers can take their kids who like listening to stories to ________.
A．Tot Spot
B．Improv in the Park
C．Wellness Wednesday
D．Movies in the Central Park
2．When can you do yoga with an instructor in Atlantic Station's Central Park?
A．On each Tuesday from 6：30 pm to 7：30 pm in August.
B．On each Tuesday morning from 10：00 am to noon in July.
C．At 8：00 pm on April 5, May 4，June 1，July 6 and August 3.
D．On each Wednesday at 7：00 pm in June and July.
3．What can we learn from the text?
A．Atlantic Station sets the days for guests to have fun.
B．Tickets for Movies in Central Park are hard to get.
C．Movies in the Central Park are shown only indoors.
D．Only teenagers are welcome to join in Wellness Wednesday
【解题导语】本文主要介绍了大西洋站几个可让人们放松自己、享受生活和取得乐趣的活动。

1．A 考查细节理解。

按照文中第二段中的“From 10：00 am to noon, kids can enjoy games，storytelling.toys，music and some very special things”可知，从上午10点到中午，在Tot Spot活动中孩子们可以做游戏、讲故事、玩玩具、听音乐等，结合选项可知，想听故事的孩子们可以去参加Tot Spot活动，故A项正确。

2．D 考查细节理解。

按照文章第三段中的“Each Wednesday from 6：30 pm to 7：30 pm，Atlantic Station's Central Park becomes the perfect place to find quietness of the mind and body while instructors lead guests through exercises including yoga and more”和“This event begins...September 28”可知，4月6日到9月28日的每个星期三下午6：30到7：30，大西洋站中央公园成为人们寻求心灵宁静和身体放松的地方，有指导者带领客人做包括瑜伽和其他活动在内的练习。

由此可知，D项符合题意。

3．A 考查推理判断。

按照文章内容，尤其是第一段可知，Atlantic Station为客人安排时间和活动来让他们玩得高兴，故A项符合题意。

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.V irgil 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.
4For 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 p arts 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
(2021·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,请按照下面表格内容,以学生会的名义用英语写一则通知,欢迎同窗们踊跃参加。

温馨提示1.自带午餐和饮用水;
2.4月5日前到学生会报名。

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。

参考辞汇: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7Unit2)
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忙营救迷路的旅行者。

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忙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,无人机之所以在丛林中测试效果不好是因为其在丛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 p roblems faced in the experiments show that there are still some
important issues to be worked out.”可推断,克里斯托弗·拉姆对该研究功效持客观态度。

【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法的机械人。

5.B 细节理解题。

按照第五段的第二句“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,这种机械人的功能就是能够日夜不断地执勤站岗。

6.A细节理解题。

按照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,一些人担忧这种机械人所携带的摄像机缘记录其隐私,其隐私有可能会被泄露。

7.D 主旨大意题。

按照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法的机械人。

Ⅱ.【解题导语】本文是议论文。

健康是人生活着最大的财富。

1.C 按照本空后的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,他就可以创造财富”,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 按照上一句内容可知,人们乃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“可以维持健康的多种方式和做法”。

5.F 本段讲的是人们维持健康的方式,故F项“老是乐观和快乐,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。