高中英语人教版(2019)必修第二册Unit 1 Cultural heritage Reading and Thinking课后作业(含答案和解析)

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名称 高中英语人教版(2019)必修第二册Unit 1 Cultural heritage Reading and Thinking课后作业(含答案和解析)
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更新时间 2022-03-28 23:16:51

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Unit1: Cultural heritage Reading and Thinking
一、单句填空
1.When you send a     (digital) signed message you are sending your certificate and public key.
2.In addition to these      (tradition) activities,we have a wider range of choices.
3.The environment will be improved by our      (far) efforts to reduce pollution.
4.Scientists can      (identity) trends for the future,but accurate predictions are almost impossible.
5.It is difficult to make a      (compare) with her previous book because they are completely different.
6.In contrast      my previous impression,the atmosphere here is not tense at all.
7.The     (image) of the moon’s surface were transmitted back to earth and printed out.
8.Last week we visited the British Museum,which attracted tourists from all      the world.
二、阅读理解
It’s possible that your phone’s face-unlock might finally be able to work while you’re wearing a mask. Researchers have found that facial recognition algorithms (算法) are getting better at recognizing faces in masks, according to data published on Tuesday by the National Institute for Standards and Technology (NIST). Using independent testing of more than 150 separate facial recognition algorithms, the news report suggests masks may not be as big a problem for facial recognition systems as initially thought.
When NIST first examined masks’ effect on facial recognition in July 2020, it found that algorithms weren’t great at identifying faces with masks. “Face recognition can make errors, which can implicate people for crimes they haven’t committed,” writes the Electronic Frontier Foundation (EFF). “It is particularly bad at recognizing African Americans and other ethnic minorities, women, and young people.” But the pandemic has given developers plenty of time to focus on the mask problem, and NIST’s data shows that facial recognition algorithms are getting better at working with masked faces. “After the pandemic, some developers have submitted algorithms which show significantly improved accuracy and are now among the most accurate in our test,” the report reads. NIST’s public ranking for facial recognition tests bears out this report. Eight different algorithms now hold false rates below 0.05 percent.
Nevertheless, there remain a number of limitations to the study. NIST researchers did not employ actual images of masked faces. Instead, they applied masks digitally to ensure consistency across the sample. As a result, “We were not able to get a thorough simulation of the endless variations in color, design, shape, texture, and ways masks can be worn,” the report states. The digital mask was a blue surgical mask covering the full width of the face, but testers noted that performance varied considerably depending on how high the mask was placed on the face.
1.What did people use to think of recognizing masked faces with facial recognition systems
A. effective B. impossible C. easy D. unreliable
2.. What does the underlined phrase “bear out” in Paragraph 3 mean
A. make. B. prove. C. deny. D. oppose.
3. What can be learned about the study
A. The way to wear masks may affect recognition accuracy.
B. The design of a mask makes no difference to facial recognition.
C. Facial recognition failure rates were quite low at the beginning.
D. The researchers adopted real surgical masks to ensure the accuracy.
4.Which of the following is a suitable title for the text
A. Limitations of Facial Recognition Software
B. The Challenge of Recognizing Masked Faces
C. The improvement in Facial Recognition Algorithms
D. Different Applications of Facial Recognition Technology
三、七选五
The Eiffel Tower is host to more than 7 million visitors per year,with almost 75 percent of those visitors from countries other than France. 1  Use these tips to learn how to visit the Eiffel Tower.
Purchase your tickets to the Eiffel Tower before your visit. 2 They are elevator access to the top of the tower and elevator access to the first two floors.Tickets purchased online are stamped with an entrance time and you cannot use the ticket before or after your time stamp.If you prefer to take the stairs,you will have to purchase your tickets at the tower because stair only tickets are not available for purchase online.
 3 There are many ways of transportation in Paris or Europe that will get you to the tower.You can choose to take the Metro,a bus,a bike,a boat or a car.
Stop to enjoy the views from the second floor. 4 It also houses the vision well,which is a glass window with a view to ground level.While you are on the second floor,browse in the gift shop for some souvenirs or grab a bite to eat at the Jules Verne Restaurant,which offers French cuisine.
Visit the Eiffel Tower at night. 5 Not only is the reflection on the River Sienne a beautiful sight,but so are all the lights in Paris or Europe.
A.Check the weather before your visit.
B.Decide how you are going to get to the Eiffel Tower.
C.Each hour,every hour,the tower is lit up for 5 minutes.
D.You will get a beautiful view of the Eiffel Tower from there.
E.The Eiffel Tower website offers two types of tickets online.
F.If you would like to pay a visit to the Eiffel Tower,do some planning.
G.This floor offers the panoramic views of Paris and is a popular spot for taking photos.
四、读后续写
阅读下面材料,根据其内容和所给段落开头语续写两段,使之构成一篇完整的短文。
The Meredith family lived in a small community.As the economy was in decline,some people in the town had lost their jobs.Many of their families were struggling to make ends meet.People were trying to help each other meet the challenges.
Mrs.Meredith was a most kind and thoughtful woman.She spent a great deal of time visiting the poor.She knew they had problems,and they needed all kinds of help.When she had time,she would bring food and medicine to them.
One morning she told her children about a family she had visited the day before.There was a man sick in bed,his wife,who took care of him and could not go out to work,and their little boy.The little boy—his name was Bernard—had interested her very much.
“I wish you could see him,”she said to her own children,John,Harry,and Clara.“He is such a help to his mother.He wants very much to earn some money,but I don’t see what he can do.”
After their mother left the room,the children sat thinking about Bernard.“I wish we could help him to earn money,”said Clara.“His family is suffering so much.”
“So do I,”said Harry.“We really should do something to assist them.”
For some moments,John said nothing,but,suddenly,he sprang to his feet and cried,“I have a great idea!I have a solution that we can all help accomplish(完成).”
The other children also jumped up all attention.When John had an idea,it was sure to be a good one.“I tell you what we can do,”said John.“You know that big box of corn Uncle John sent us Well,we can make popcorn(爆米花),and put it into paper bags,and Bernard can take it around to the houses and sell it.”
注意:续写词数应为150左右。
When Mrs. Meredith heard of John’s idea,she thought it was a good one,too.




With everything ready,Bernard started out on his new business.




答案和解析
一、单句填空
1.digitally
2.traditional
3.further
4.identify
5.comparison
6.with/to
7.images
8.over
二、阅读理解
DBAC
三、七选五
1.F 根据下文的“使用这些建议来了解如何参观埃菲尔铁塔”可知,F项“如果你想参观铁塔要做好计划”可引出下文。
2.E 根据“它们是电梯通往塔顶和电梯通往前两层的票”可知,E项“铁塔的网站提供两种票”可引出下文。
3.B 根据下文提到的“You can choose to take the Metro,a bus,a bike,a boat or a car.”可知,此处是介绍去铁塔的方式,所以选B项。
4.G 本部分的小标题是“Stop to enjoy the views from the second floor.”,G项中的“This floor...”可承接上文。
5.C 本部分的小标题是“Visit the Eiffel Tower at night.”,C项“Each hour,every hour,the tower is lit up for 5 minutes.”符合语境。
四、读后续写
When Mrs.Meredith heard of John’s idea,she thought it was a good one,too.Very soon,the children were busy popping the corn,while their mother went out to buy the paper bags.When she came back,she brought Bernard with her.Bernard was very glad to join in the work and said,“So good an idea! I’ll try right now.”They worked together until all the corn they prepared was all popped,the paper bags filled and arranged in the basket.
With everything ready,Bernard started out on his new business.Much sooner than expected,he returned with an empty basket.He had never earned so much money before in his life.For many weeks,the Meredith family continued to offer popcorn to Bernard.People began to watch for the “little popcorn boy”,and every week he had at least fifty cents,a significant income for him and his family,to take home.All of this was thanks to the good idea that John came up with.