2021届高考英语(浙江专用)二轮评估验收仿真模拟卷(10)

高考仿真模拟卷(十)
(时间：120分钟，满分：150分)
选择题部分
第一部分听力(共两节，满分30分)
第一节(共5小题；每小题1.5分，满分7.5分)
听下面5段对话。

每段对话后有一个小题，从题中所给的A、B、C三个选项中选出最佳选项。

听完每段对话后，你都有10秒钟的时间来回答有关小题和阅读下一小题。

每段对话仅读一遍。

1．What will the man do tonight?
A．Have a drink. B．Write a paper.
C．Watch a film.
2．Where are the speakers?
A．In a library. B．In a garden.
C．In a bookstore.
3．What are the speakers talking about?
A．A dog. B．A lecture.
C．A professor.
4．How do the speakers go to work?
A．By bus. B．By taxi.
C．By bike.
5．What does the woman look like?
A．She’s slim. B．She wears glasses.
C．She has short hair.
第二节(共15小题；每小题1.5分，满分22.5分)
听下面5段对话或独白。

每段对话或独白后有几个小题，从题中所给的A、B、C三个选项中选出最佳选项。

听每段对话或独白前，你将有时间阅读各个小题，每小题5秒钟；听完后，各小题将给出5秒钟的作答时间。

每段对话或独白读两遍。

听第6段材料，回答第6、7题。

6．What puzzles the woman most?
A．How to use chopsticks.
B．How to eat from the same plate.
C．How to behave properly at table.
7．What’s the man’s adivce to the woman?
A．Learning table manners. B．Keeping a good appetite.
C．Bringing her own chopsticks.
听第7段材料，回答第8、9题。

8．What is the woman?
A．A junior student. B．A school librarian. C．A university teacher.
9．Which building is the tallest?
A．The gym. B．The library. C．The dining hall.
听第8段材料，回答第10至12题。

10．What is the probable relationship between the speakers? A．Classmates. B．Neighbors. C．Colleagues.
11．How does the man sound in the conversation?
A．Curious. B．Grateful. C．Humorous.
12．What will the man probably do next?
A．Watch videos. B．Do the research. C．Explore the Mars.
听第9段材料，回答第13至16题。

13．Why does the man call the woman?
A．To rent a new flat.
B．To tell some problems.
C．To deliver a new television.
14．When will the tap be repaired?
A．This afternoon. B．Tomorrow morning. C．At the weekend.
15．Where did the student know about the flat?
A．On the TV. B．In the store. C．On the Internet.
16．What does the woman ask the student to do?
A．Order a new TV online.
B．Send her the TV receipt.
C．Get someone to fix the old TV.
听第10段材料，回答第17至20题。

17．Who is the speaker probably talking to?
A．Film fans. B．New students.
C．College graduates.
18．Where does the speaker come from?
A．Britain. B．China.
C．Germany.
19．What made the speaker feel better?
A．Respecting everyone.
B．Going out to eat food.
C．Teaming up with classmates.
20．What is the speaker’s treasure?
A．Close friends. B．Awesome work.
C．Excellent skills.
第二部分阅读理解(共两节，满分35分)
第一节(共10小题；每小题2.5分，满分25分)
阅读下列短文，从每题所给的A、B、C和D四个选项中，选出最佳选项。

A
When Jessica came in as a baby in 2010 she could not stand. Both wings were broken. I took her to the vet’s office to give her a chance at life.
Six weeks later, she still couldn’t stand. It got to the point where an awful decision had to be made if she couldn’t stand in a week. It looked like death was winning. She was going to be put_down that Friday. I didn’t want to go to the center. But I went anyway, and when I walked in everyone was smiling widely. I went immediately back to her cage; and there she was, standing on her own, a big beautiful eagle. I was just about in tears.
We knew she could never fly, so the director asked me to use the glove to train her. I got her be used to the glove, and we started doing education programs for schools. Miracle Pets even did a show about us.
In the spring of 2016, I was diagnosed with cancer. I had been in stage 3, which was not good. When I felt good enough, I would take Jessica out for walks. Jessica would also come to me in my dreams and help me fight the cancer time and time again.
Fast forward to November 2016, I went in for my last checkup. I was told that if the cancer was not all gone, my last choice was a stem cell transplant. I went in on Monday, and I was told all the cancer was gone!
The first thing I did was take the big girl out for a walk. I hadn’t said a word to Jessica, but somehow she knew. She stared into my eyes and wrapped me with her wings. We just stood there like that. That was a magic moment. We have been soul mates ever since she came in.
21．What does the underlined phrase “put down”in Paragraph 2 probably mean?
A．Set free.B．Killed painlessly.
C．Taken home. D．Buried underground.
22．What happened after the author was diagnosed with cancer?
A．Jessica tried her best to cheer up the author.
B．The author was too weak to care about Jessica.
C．The author gained spiritual support from Jessica.
D．Jessica continued to do education programs for schools.
23．Which is the best title of the text?
A．Jessica and Me B．A Magic Moment
C．A Brave Soldier D．My Soul Mate
B
Have you ever wondered when dogs first became “man’s best friend”and the world’s favourite pet? If you have, then you’re not alone. When and where dogs first began living side by side with humans are questions that have stirred hot debate among scientists. There are a few hard facts that all agree on. These include that dogs were once wolves and they were the first animal to be domesticated(驯养) by humans. They came into human lives about 15, 000 years ago, before the dawn of agriculture.
Beyond that, there i s little agreement. The earliest bones found that are unquestionable dogs’ and not wolves’ date from 14, 000 years ago. However, 30, 000­year­old skulls have been discovered in France and Belgium that are not pure wolves’and some scientists think could be dogs’．
With such puzzling evidence, many scientists are now turning to DNA to find out when and where dogs were first domesticated. In one research project, tens of thousands of blood samples have been taken from street dogs around the world. The plan is to compare them with those of wolves. It’s even possible to analyse DNA from ancient bones. Tiny pieces of the 30, 000­year­old skulls mentioned earlier are currently being studied, and another DNA study has already shown that ancient dogs preserved in the Alaskan ice fields evolved from Asian wolves, not American ones.
Indeed, the ancient DNA may turn out to be more informative than the DNA of living dogs. Because dogs have accompanied humans around the world for thousands of years, their current distribution may tell us very little of their origins. This is why different groups of scientists believe that dogs variously originated in eastern Asia, Mongolia, Siberia, Europe or Africa.
But why were the animals domesticated in the first place? The most recent theory is that dogs domesticated themselves, initially living in and around our ancient villages to eat any food thrown out. Today, this is a way of life still shared by three quarters of a billion unowned dogs worldwide.
24．Which is the only statement generally agreed on by scientists studying dogs?
A．Dogs originally were used as farm animals.
B．Dogs evolved from wolves found in Europe.
C．Dogs helped the development of agriculture.
D．Dogs were the first animal to be kept as pets.
25．Why does the writer first mention the 30, 000­year­old animals’skulls?
A．To show that dogs were much larger in the past.
B．To prove that dogs developed from Asian wolves.
C．To suggest that dogs may have evolved much earlier.
D．To argue that dogs were first kept in France and Belgium.
26．Why did dogs start living with humans?
A．Because they were attracted by food.
B．Because they were trapped by humans.
C．Because they couldn’t survive in the wild.
D．Because they were trained to protect villages.
C
Classifying things is critical for our daily lives. For example, we have to detect spam mail(垃圾邮件), false political news. When we use AI, such tasks are based on “classification tech nology” in machine learning—having the computer learn, using the boundary separating positive and negative data. For example, “positive”data would be photos including a happy face, and “negative”data photos that include a sad face. Once a classification boundary is learned, the computer can determine whether certain data are positive or negative.
However, the difficulty with this technology is that it requires both positive and negative data for the learning process, and negative data are not available in many cases. For instance, when a retailer(零售商) is trying to predict who will make a purchase, they can easily find data on customers who have purchased from them(positive data), but it is basically impossible to obtain data on customers who have never purchased from them(negative data), since they do not have access to their competitors’data.
According to lead author Takashi Ishida from RIKEN AIP, “Previous classification methods could not cope with the situation where negative data were not available, but we have made it possible for computers to learn with only positive data, as long as we have a confidence score for our positive data, constructed from information such as buying intention or the active rate of app users. Using our new_method,_we can let computers learn a classifier only from positive data equipped with confidence.”
According to Ishida, “This discovery could expand the range of applications where classification technology can be used. Even in fields where machine learning has been actively used, our classification technology could be used in new situations where only positive data can be
gathered due to data regulation or business constraints(限制). In the near future, we hope to put our technology to use in various research fields, such as natural language processing, computer vision, robotics, and bioinformatics.”
27．How can the computer distinguish the positive data from the negative data?
A．By learning the classification boundary.
B．By updating the data collected regularly.
C．By separating happy faces and sad ones.
D．By introducing classification technology.
28．Why is the example mentioned in Paragraph 2?
A．To prove how important the positive data are.
B．To confirm that data on customers are complete.
C．To argue that retailers get their competitors’data.
D．To explain why negative data are hard to acquire.
29．What do the underlined words “new method”in Paragraph 3 refer to?
A．Analyzing buying intention.
B．Building a confidence score.
C．Assessing the active rate of app users.
D．Equipping the computer with confidence.
30．What can be a suitable title for the text?
A．The History of Classification Technology
B．Smarter AI: Machine Learning Without Negative Data
C．Bigger Data: Computers Assisting Language Processing
D．The Comparison Between Positive Data and Negative Data
第二节(共5小题；每小题2分，满分10分)
根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。

选项中有两项为多余选项。

It is known to us all that thinking is a good thing. However, some people don’t do it enough, while some people overthink everything. If you’re an overthinker, it can be exhausting running through all the possibilities of everything. It’s not good that the what­ifs run your life and you are trapped. 31.________
Here are some signs that you are an overthinker, even if you don’t feel you are.
·32.________
Why didn’t the girl look at me？And why did Peter look away so fast？What does it all mean？！When you’re an overthinker, you tend to find meaning in the world around you. It’s helpful
to remind yourself that things mean the meaning you give them.
·You think more than you do.
Sometimes you think so much that you don’t end up doing anything. You weigh the choices, decide which is the best, and compare it with a new choice. You end up doing nothing. 33.________ ·You find it difficult to let things go.
When you’ve invested a lot of time and energy into something, it can be hard to let it go when it isn’t working. 34.________The more you think about something, the more it can eat away at you.
·You want to get everything right.
You might be a perfectionist. You always do your best. But when you don’t get everything right, you seriously blame yourself. By recognizing that this can be a strength as well as a weakness, you should know that you simply can’t get everything right, despite your best efforts.
35．________ Remind yourself that you can balance your level of overthinking with more doing. You can even teach someone else who underthinks!
A．You may continue thinking about it even when you believe you have already let it go.
B．You assume that others know what you’re thinking about.
C．Remember that, instead of just thinking, it’s equally important to act.
D．You’re proud of the act that you’re always thinking.
E．You look for meaning in everything.
F．It’s even worse when you’re unaware that you are just like this.
G．Can any of the above signs be found on you?
第三部分语言运用(共两节，满分45分)
第一节(共20小题；每小题1.5分，满分30分)
阅读下面短文，从短文后各题所给的A、B、C和D四个选项中，选出可以填入空白处的最佳选项。

Spelling was sort of my super power. I wasn’t math or science guy, but I could chew and __36__ books.
“Your word is onomatopoeia，”said the announcer. On the stage of “School Bee”，my brain __37__ to the spelling bees ahead: first the county championship, then the state, and finally the national spelling bee. I glanced back at Alexa, who wanted another chance at __38__. If I missed this word, she’d be __39__ in the game. But that wouldn’t happen. Chin up, shoulders back, I __40__ my throat, “O­n­o­m­a­t­o­p­o­e­i­a.”I made it.
The trophy( 奖杯) was presented to me. I shouted onstage, “I am the alpha­best”. Surprisingly, my sister, Deandra, rolled her eyes. “You’re a __41__ winner.”Deandra made a __42__ face. “She tried to shake your hand but you __43__．”
I didn’t __44__ at all. “Anyway, I won the school bee.”“Don’t be proud. You’ll soon be facing the __45__ of the best in the county bee.”
“Will they __46__ me? I am the alpha-best with no efforts at all.”After six rounds, the number of students __47__ from more than 100 to just seven and I was one out of the seven. If I had been given words like aerospace or conical, I’d make __48__ already. Unfortunately, I __49__ with the word maestro at last. I stood __50__ for the longest moment.
The final winner acted the exact __51__ of mine. He accepted his trophy with a small bow, and then shook hands with the runner­up(亚军). I got to know Deandra’s words __52__．
I apologized to Alexa, “I’m sorry I was so __53__ when I won.”“How was the county bee？” Alexa asked. “A __54__．”“If you need a study partner for next time, I’m happy to help.”“Really? Let’s __55__ on it, partner.”“Better late than never.”Alexa said, shaking my hand.,36.A.prefer B．acquire
C．write D．digest
37．A.flashed back B．fast-forwarded
C．paid attention D．got
38．A.winning B．announcing
C．listening D．missing
39．A.back B．off
C．out D．away
40．A.dried B．cleared
C．closed D．choked
41．A.terrible B．fair
C．great D．real
42．A.happy B．sour
C．cheerful D．painful
43．A.ignored B．agreed
C．accepted D．doubted
44．A.answer B．care
C．regret D．decline
45．A.poorest B．easiest
C．best D．luckiest
46．A.admire B．pass
C．influence D．match
47．A.jumped B．rose
C．decreased D．spread
48．A.concerns B．efforts
C．progress D．history
49．A.changed B．fell
C．crashed D．relieved
50．A.by B．around
C．frozen D．tall
51．A.role B．way
C．opposite D．behavior
52．A.took place B．made sense
C．came out D．caught up
53．A.ashamed B．shocked
C．cautious D．impolite
54．A.disaster B．deal
C．success D．dream
55．A.rely B．rest
C．base D．shake
非选择题部分
第三部分语言运用(共两节，满分45分)
第二节(共10小题；每小题1.5分，满分15分)
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。

Pollution takes away all the beauty of the beaches of Hawaii. I hate to go to the beaches on
56.____________(sun) weekends and see rubbish bags lying on the sand, cigarette butts(烟头)
57.____________ (bury) in the sand, and soda cans floating in the ocean.
One thing that really annoys me is that I see 58.____________(tour) who visit Hawaii leave their rubbish on the beaches. I was always taught after drinking soda to throw the can into the place 59.____________ it should stay—the trash can.Another thing that annoys me is that some people walk right by rubbish 60.____________ pretend that it’s not there.
The dogs or the fish are not to blame 61.____________ it. It’s our fault and we must blame 62.____________ (we)．Everyone has to do his or her part 63.____________(solve) this problem. It can’t be difficult to do the job. There are a lot of things that we can do. First of all, we can help pick up rubbish along the beaches. We could also form organizations that help clean up our beaches. More 64.____________ (important), we need to start now before the beaches 65.____________(damage) beyond repair.
第四部分写作(共两节，满分40分)
第一节应用文写作(满分15分)
假定你是李华，你家乡的剪纸艺术负有盛名，你写了一篇英文宣传稿，想请外籍老师Bob 帮助润色。

请根据提示，用英语给Bob写一封求助信。

内容包括：
1．求助事由；
2．求助内容；
3．表达感激。

注意：1.词数80左右；
2．可以适当增加细节，以使行文连贯。

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第二节概要写作(满分25分)
阅读下面短文，根据其内容写一篇60词左右的内容概要。

A new study warns that about thirty percent of the world’s people may not have enough water by 2025.
A private American organization called Population Action International(PAI) did the new study.It says more than three hundred and thirty-five million people lack enough water now.The people live in twenty-eight countries.Most of the countries are in Africa or the Middle East.
PAI researcher Robert Engelman says by the year 2025，about three thousand million people are short of water.At least eighteen more countries are expected to have serious water problems.The demand for water keeps increasing.Yet the amount of water on Earth stays the same.
Mr.Engelman says the population in countries that lack water is growing faster than in other parts of the world.He says population growth in these countries will continue to increase.
The report says that lack of water in the future may result in several problems.It may increase health ck of water often means drinking waters not safe.Mr.Engelman says there are problems all over the world because of diseases，like cholera that are carried in water.
Lack of water may also lead to more international conflict.Countries may have to fight for water in the future.Some countries now get sixty percent of their fresh water from other
countries.This is true of Egypt，the Netherlands，Cambodia，Syria，Sudan，and Iraq.And the report says lack of water would affect the ability to improve their economies.This is because new industries often need large amounts of water when they are beginning.
The Population Action International study gives several solutions to the water problem.One way，it says，is to find ways to use water for more than one purpose.Another way is to teach people to be careful not to waste water.A third way is to use less water for agriculture.
The report also says long­term solutions to the water problem must include controls on population growth.It says countries cannot provide clean water unless they slow population growth by limiting the number of children people have.
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高考仿真模拟卷(十)
选择题部分
第一部分听力
1－5.BCBAC6－10.CAABA11－15.CBBAC16－20.BCBCA
听力材料
(Text 1)
W: Hey, let’s go out to have a drink first and see the movie The Wandering Earth tonight!
M: Count me out. I have to finish my term paper.①
(Text 2)
M: Excuse me, have you got a coloring book called The Secret Garden?
W: You’re late. We’ve just sold out the last one.②
(Text 3)
W: Hi, Andy. Ha ve you attended Professor Smith’s lecture yesterday？③ It was really a hit.
M: Of course! I enjoyed it except his dog mentioned in the last part.
(Text 4)
W: Gosh, another stop. It seems the taxis ahead of us have to stop every two minutes. It’s no quicker than our bus.④
M: That’s true. During rush hours, riding a bike to work is the best choice.
(Text 5)
M: Hey, Mary. A small world! You’ve changed your hairstyle. You used to be slim and have long hair. And where are your glasses?
W: Oh, they were terrible. I can’t believe you still remember them！⑤
(Text 6)
M: Have you ever been invited to a Chinese feast?
W: Sure. Having been here for two years, I’m accustomed to using chopsticks and eating out of the same plate. However, the biggest confusion for me is how to behave properly at a Chinese dinner table.⑥
M: Yes. Some practices are truly different here. Hey, your chopsticks! You shouldn’t stick
them into your food!
W: Anything strange about that?
M: It’s very unlucky and might make all the people present unhappy.
W: Oh, sorry! There’s a long story even with a mere pair of chopsticks.
M: You’d better attend a course on table manners or others may lose their appetite.⑦
(Text 7)
W: Good morning. I’m Alice, a junior here and today I will show you around my university.⑧
M: You’re so kind. What’s the building over there?
W: That’s the dining hall where you can have a lot of choices. To the left is a large gym. Many students often do sports there after class.
M: Is there a swimming pool in the gym?
W: Yes. A large one, but it is only available in summer. And the tallest building behind the gym is our library，⑨ housing more than 1，000，000 books.
M: I do envy you and I hope I can be admitted to your school one day.
W: I believe you can make it.
(Text 8)
W: Rob, did you finish your part of the research over the weekend?
M: It was still on the top of my to-do list.
W: I bet you spent the whole weekend watching videos on the website and shopping.
M: What? That’s unfair and untrue, Jane. Apart from watching videos and shopping, I even explored the Mars, of course in my dream！⑪
W: Rob! Be serious! If I’d known you weren’t going to do it, I’d have asked our science teacher for another partner.○10
M: I do feel sorry for that. I shouldn’t spend much t ime on the screen rather than urgent things.
W: The deadline is coming. Turn off your digital products and get down to your tasks, Rob.
M: Sounds great.⑫
(Text 9)
M: Good morning, I’m one of the students who rented your flat.
W: Oh, yes. Everything all right?
M: Not exactly. I’m afraid there are a couple of problems.⑬
W: Sorry to hear that. Anything wrong?
M: The water tap is out of work for several days. I wonder if you could send someone to repair it.
W: No problem. I’ll get someone to have a look at th e weekend.
M: Could he come around a bit sooner? I don’t think we can manage until the weekend.
W: I see. I’ll send someone over this afternoon then.⑭
M: There’s also the matter of the TV. We all assumed there would be one in the flat, because that’s what we read from the advertisement online.⑮
W: Sorry about that. I got rid of the old TV, but forgot to order a new one. I’ll deliver one to you tomorrow morning.
M: Actually we bought one in the store. But could you pay us back?
W: Just tell me how much you paid for it and send the receipt to me.⑯
M: OK. 260 pounds.
(Text 10)
W: Good morning, everyone! I can’t believe we’re finally graduating from American Film Institute.⑰Thank you so much Mr. Gladstein for pronouncing my name right. It is hard to pronounce for non-native speakers.
Part of the reason I’m here is because I received assistance from my Chinese fellows.⑱We make up 20 percent of the university population, which is the same percentage of us Chinese people in the world. Jokes aside, the class are from all over the world such as Germany and Britain.
When I first arrived here two years ago, I respected everyone, everything—the talented schoolmates, the grand buildings. In the first year, I w as in constant social anxiety. I didn’t know how to make friends. And I would always miss home and felt lonely.
However, I felt much better after the first teamwork with my classmates.⑲With so much work to do, it was super easy to make friends like this. “Hey, I’m starving! Do you want to go out and eat some food？”“Sure.” We encouraged each other to improve our skills and create
awesome work. But seriously, this couldn’t have happened without the effort of my dear friends. Y ou must be the treasure sent to my life.⑳
Now it is time for us to get out here, and show the world how excellent we are! Thank you very much!
第二部分阅读理解
第一节
【解题导语】本文是一篇记叙文。

一只名为Jessica的鹰出生时无法站立，双翅折断，医生对此也无能为力，不料后来它竟然能够站立了。

6年后，“我”患了癌症，Jessica陪“我”度过了那段人生中的艰难时期——我们从初次见面时就已成了知己。

21．B解析：词义猜测题。

根据第二段第二、三句“It got to the point where an awful decision had to be made if she couldn’t stand in a week. It looked like death was winning.”可知，如果她一个星期后站不起来，那就到了不得不做一个很坏的决定的地步了。

看来死神就要赢了。

结合该句“She was going to be put down that Friday.”可知，那个星期五，她将被杀死。

故B 项“无痛苦地被杀死”符合语境，故B项正确。

22．C解析：细节理解题。

根据第四段第三、四句“When I fe lt good enough, I would take Jessica out for walks. Jessica would also come to me in my dreams and help me fight the cancer time and time again.”可知，当“我”感觉足够好的时候，“我”会带Jessica出去散步，Jessica也会出现在“我”的梦中，一次又一次地帮助“我”与癌症作斗争。

据此可知，当作者被诊断患癌症后，作者从Jessica那里得到了精神支持，故C项正确。

其他三项文章中都没有提及。

23．A解析：标题归纳题。

通读全文可知，本文主要讲述了一只名为Jessica的鹰和“我”的故事，故A项最适合作为本文标题。

【解题导语】本文是一篇说明文。

研究发现，狗是从狼驯养而来的，早在大约一万五千年之前狗就进入了我们的生活。

科学家通过分析DNA去查证狗最初是在何时何地被驯养的。

24．D解析：细节理解题。

根据第一段中的“There are a few hard facts that all agree on.These include that...the first animal to be domesticated(驯养) by humans.”可知，狗是第一种被人类驯养成宠物的动物，故D项正确。

25．C解析：推理判断题。

根据第二段第三句“However，30, 000-year-old skulls have been discovered in France and Belgium that are not pure wolves’ and some scientists think could be dogs’．”可知，在法国和比利时已经发现了三万年前的头骨，它们不完全是狼的，科学家认为有一些可能是狗的。

而第二段第二句表示最早发现的狗骨头是14 000 年前的，据此可推知，
该处提及三万年前的头骨旨在说明狗的进化历史更早，故C项正确。

26．A解析：推理判断题。

根据尾段第二句“The most recent theory is that dogs domesticated themselves, initially living in and around our ancient villages to eat any food thrown out.”可知，最近的一种说法是，狗是自己驯养自己的，最初生活在我们古老的村庄里或周围，吃人们扔掉的食物。

据此可推知，狗和人生活在一起的原因是它们被食物所吸引，故A项正确。

【解题导语】分类对我们的日常生活至关重要。

然而在分类技术机器学习过程中，分类既需要积极的数据，也需要消极的数据，而消极的数据在很多情况下是很难获得的。

现在科学家能用分类技术使机器只识别积极的数据。

27．A解析：细节理解题。

根据第一段最后一句“Once a classification boundary is learned, the computer can determine whether certain data are positive or negative.”可知，一旦学习了分类边界，计算机就可以确定某些数据是积极的还是消极的，由此可知，计算机是通过学习分类边界来区分积极的数据和消极的数据的。

28．D解析：细节理解题。

根据文章的第二段，尤其是第一句“However, the difficulty with this technology is that it requires both positive and negative data for the learning process, and negative data are not available in many cases.”可知，在学习过程中，它既需要积极的数据，也需要消极的数据，而消极的数据在很多情况下是很难获得的，进而后面举例说明解释了为什么消极的数据很难获得。

29．B解析：词义猜测题。

根据文章的第三段，尤其是画线词组前一句中的“but we have made it possible for computers to learn with only positive data, as long as we have a confidence score for our positive data, constructed from information such as buying intention or the active rate of app users”可推知，画线词组所在句表示使用这种建立信心指数的新方法，我们就可以让电脑只用积极的数据来学习，故画线词组是指建立信心指数。

30．B解析：标题归纳题。

通读全文可知，分类对我们的日常生活至关重要。

然而在分类技术机器学习过程中，分类既需要积极的数据，也需要消极的数据，而消极的数据在很多情况下是很难获得的。

现在科学家能用分类技术使机器只识别积极的数据。

第二节
【解题导语】本文主要对过度思虑的一些迹象进行了简要的说明。

31．F解析：根据上文中的“It’s not good that the what­ifs run your life and you are trapped.”可知，空处应是说明更深一层的坏处，所以选F项。

32．E解析：根据文章结构及空处所在的位置可知，空处为本段的小标题，且根据本段。