1、考点规范练32(选修7Unit 2).阅读理解AEach 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 pilots assistance.This could allow rescuers to search more efficiently.Scient
2、ists outfitted a craft with a single camera.As the drones “eye”,the camera pointed forwards.But having an eye wasnt 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
3、a computer to interpret,study leader Alessandro Giusti notes.So he and his team used photos of forest trails to train their drones 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 l
4、eft 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.T
5、he 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 hi
6、s team took their now “smart” device to a forest with trails that had not been used in the drones training.It flew along the path,constantly adjusting its direction based on the images coming in through its camera.The drone didnt perform as well in real-life as it did in the lab,Giusti admits.Thats
7、because the drones 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.“Its an exciting use for neural networks,” says Christopher Rasmussen,a computer-vision sc
8、ientist 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 lostB.ensure the safety of travelersC.deliver necessities to tr
9、avelersD.show travelers the way to a place2.While being tested to classify the images in the lab,the computer .A.did as well as the peopleB.did a lot better than the peopleC.did much worse than the peopleD.did a little better than the people3.Why didnt the drone perform well in the forest?A.The ligh
10、t in the forest was very poor.B.The trees or bushes covered the trails.C.The drone couldnt fly very low there.D.The pictures taken were of poor quality.4.What is Christopher Rasmussens attitude towards the results of the experiments?A.Critical.B.Doubtful.C.Objective.D.Optimistic.B(2016石家庄调研检测)Shoppi
11、ng 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
12、Knightscope.He says,“These robot security guards will change the world.Our planet has seven billion people on it.Its going to quickly get to nine billion people.The security equipment that we have globally is just not going to develop that fast.The companys Autonomous Data Machines can become the ey
13、es 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 its always working all together.”The machines are one and a half meters tall and weigh 136 kilograms.The
14、y 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 recordin
15、gs 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.
16、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.来源:Zxxk.ComC.Carry heavy weapons.D.Stop crime
17、 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 PopularB.Robots Contribute a Lot to the WorldC.Robo
18、ts Are in Great Demand Now来源:Zxxk.ComD.Security Robots Could Help Cut Crime来源:学科网.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 e
19、ach other?People nowadays think the statement means when a person is healthy,he is capable of producing wealth.2 As a result,he/she wont 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
20、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 dont even bother about
21、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
22、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
23、 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 dont realize that without health there is no real happiness.E.On the contrary,if one is not hea
24、lthy,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.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。目的锻炼身体,放松心情地点邙山内容与要求1.
25、早上7:20在校门口乘公交车出发,下午7:00返回;2.上午登山,中午在山顶野餐,下午分组自由活动;3.拍照、记录,之后参加校摄影展或征文比赛。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;来源:Zxxk.Com3.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 contestNotice来源:Zxxk.ComStudent UnionMarch 30导学号92550071#考点规范练32(选修7Unit 2).【解题导语】本文是说明文。瑞士科
26、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 pilots 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“T
27、hats because the drones 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“Its an exciting use for neural networks.,”及“However,the problems faced in the experiments show that there are still some important issue
28、s 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
29、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。.【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
30、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。.NoticeIn order to encourage Senior Three students to take exercise an
31、d relax themselves,were going to organize a mountain-climbing activity on April 10.Were to gather at the school gate and start at 7:20 am by bus and get back at 7 pm.Well climb Mangshan Mountain in the morning,on the top of which well have a picnic at noon.In the afternoon well 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 UnionMarch 30
