Humans have little difficulty recognizing one another.We may not recall a name,but we can usually remember if we've seen a face.And we know that no two faces are exactly alike.Even "identical" twins have slightly different faces.Each human face is truly unique,which makes seeing someone's face a great way to confirm their identity.And now we've invented machines that are able to recognize faces,which they are doing daily for numerous purposes at lightning speed.
Governments,banks,employers,border security and police services are increasingly using facial recognition technology.This allows them to quickly confirm an individual's identity.Systems are becoming so efficient and effective that a wanted criminal can instantly be picked out of a crowd of thousands of people.All that's required is an image in a database to compare with the images of any number of people in a crowd.
Ordinary people,too,are using facial recognition to unlock their phones,their computers and other devices.Such systems are generally quite secure.According to a cellphone company,for example,there is only one chance in a million that a face other than your own could unlock your phone.
Personal facial recognition protection has several benefjye.ais.It is instantaneous (瞬間完成的),and it relieves us of the need to memorize passwords or PINs (Personal Identification Numbers).However,a device will require a password in a rare event where it doesn't,for whatever reason,recognize the user's face.
Technology often makes our lives easier in everyday ways.However,sometimes the same technology is used in ways that we might find disturbing.For some people,it is good,but for other people,it might bring bad and uncomfortable feelings.Is there a disadvantage to the rapid spread of facial recognition technology?There are numerous concerns about the use of facial recognition.Primarily,the concern is that it may threaten privacy (隱私).The installation (安裝) of more and more cameras in public and private places is now a part of everyday life.Those cameras are being linked with huge image databases.This means people can be observed and recognized wherever they go and whatever they do.Cameras on every lamppost (街燈柱) may make public spaces safer,but keeping citizens who obey the law under constant watch is disturbing to many.
When a person wears a mask or a scarf,which covers his face,facial recognition systems are having some difficulty.A mask covers many of the facial data points used by recognition software to confirm a person's identity.In response,facial recognition systems are being trained to use less facial data.That could affect how dependable it is as a method of identity detection.
(1)Why can we identify people by seeing someone's face? CC
A.A human's face is not often covered.
B.A human's face is easy to memorize.
C.A human's face is the only one of its kind.
D.A human's face can show one's feelings.
(2)What does the second paragraph mainly tell us? AA
A.Practical uses of facial recognition technology.
B.Development of facial recognition technology.
C.Different ways to unlock phones and computers.
D.Databases to compare with the images of people.
(3)How should people usually deal with a device if it doesn't recognize the-user's face? DD
A.By restarting it.
B.By having it repaired.
C.By recognizing one's voice.
D.By using a password.
(4)What can we learn from the last two paragraphs? BB
A.Most people believe it is illegal to use facial recognition in public.
B.Using less facial data could influence the accuracy of recognition.
C.Wearing a mask doesn't affect facial recognition at all.
D.The cameras are only linked with personal computers.
【答案】C;A;D;B
【解答】
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發(fā)布:2024/4/20 14:35:0組卷:1引用:3難度:0.5
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Protecting habitats(棲息地)is important for keeping biodiversity.In 2003,over 102,000 habitats covering nearly 19 million square kilometres,or 11.5% of the world's land surface,were under some form of protection.Though this is a great improvement since 1962,when just 1,000 protected habitats were listed,it is still not considered enough to stop the ecocide that is endangering the world's biodiversity.
For a number of environmentalist,protecting the world's 25 biodiversity hotspots(熱點(diǎn)地區(qū))is critical to saving habitats and species.But many hotspots are endangered already,having lost up to three-quarters of their original plants.
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A.Population growth in hotpots.
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A.To persuade readers to buy Roald Dahl's classic books.
B.To entertain readers by the changes of Roald Dahl's books.
C.To recommend the new version of Roald Dahl's classic books.
D.To inform diverse views on the changes of Roald DahI's books.發(fā)布:2025/1/30 8:0:1組卷:5引用:1難度:0.4