高三英语摸底考试试题.doc

英语试卷

本试卷分第Ⅰ卷(选择题)和第Ⅱ卷(非选择题)。第Ⅰ卷1至10页，第Ⅱ卷11至12页。考试结束，将本试卷和答题卡一并交回。

第Ⅰ卷

注意事项：

1.答第Ⅰ卷前，考生务必将自己的姓名、准考证号填写在答题卡上。

2.选出每小题答案后，用铅笔把答题卡上对应题目的答案标号涂黑。如需改动，用橡皮擦干净后，再选涂其他答案标号。不能答在本试卷上，否则无效。

第一部分听力(共两节，满分30分)

做题时，先将答案标在试卷上。录音内容结束后，你将有两分钟的时间将试卷上的答案转涂到答题卡上。

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，并标在试卷的相应位置。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。

例：How much is the shirt?

A. 19.15.

B. 9.15.

C. 9.18.

答案是B。

1. What is the woman willing to do?

A. Visit a gallery.

B. Go shopping.

C. Visit a zoo.

2. When will the man meet Dr. Carter?

A. At 7:30 am.

B. At 8:00 am.

C. At 8:15 am.

3. What are the speakers mainly talking about?

A. Preparations for college.

B. Housing fees.

C. Meal plans.

4. Where does this conversation probably take place?

A. In a classroom.

B. In a library.

C. In a bookstore.

5. What's the probable relationship between the speakers?

A. Teacher and student.

B. Doctor and patient.

C. Mother and son. 第二节(共15小题；每小题1.5分，满分22.5分)

请听下面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，并标在试卷的相应位置。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至7题。

6. What made Jack sad?

A. Failing in the exam.

B. Staying at home alone.

C. Losing contact with Alice.

7. What will the woman do next?

A. Take Jack out.

B. Give Jack a call.

C. Stay with Jack.

听第7段材料，回答第8至9题。

8. What's the advantage of working in a restaurant over a bar?

A. Improving English.

B. Meeting different people.

C. Earning some tips.

9. How long can the woman work in the UK?

A. 3 months.

B. 6 months.

C. 9 months.

听第8段材料，回答第10至12题。

10. What is the man doing?

A. Speaking at a conference.

B. Conducting a job interview.

C. Hosting a radio program.

11. What is the first step for Abigal to realize her dream?

A. Working out a specific plan.

B. Earning private pilot's license.

C. Running

a marathon.

12. Who will Abigal talk about next?

A. Her mother.

B. Her teacher.

C. Her sister.

听第9段材料，回答第13至16题。

13. What is the woman's attitude toward the man's description?

A. Understanding.

B. Doubtful.

C. Ambiguous.

14. Why does the woman speak of a study?

A. To persuade the man.

B. To support her findings.

C. To reduce the man's anxiety.

15. What does Clay Marsh probably do?

A. He is an athlete.

B. He is a coach.

C. He is a teacher.

16. What exercise will the man take tomorrow?

A. Boxing.

B. Walking.

C. Weightlifting.

听第10段独白，回答第17至20题。

17. What caused Mary to do the experiment?

A. A piece of news.

B. A truck accident.

C. Some project data.

18. Where did Mary do the experiment?

A. In a school.

B. On the road.

C. In a field.

19. Which sound frequency could send the deer away?

A. 25,000 hertz.

B. 20,000 hertz.

C. 14,000 hertz.

20. What is the purpose of Mary's experiment?

A. To provide a shelter for the deer.

B. To test the hearing of the deer.

C. To protect the deer from danger.

第二部分阅读理解(共两节，满分40分)

第一节(共15小题；每小题2分，满分30分)

阅读下列短文，从每题所给的四个选项(A、B、C和D)中，选出最佳选项，并在答题卡上将该项涂黑。

A

Here are opportunities for international student volunteers. You can apply your academic training to overall development programs in service. Group service options are explained here.

21. Which program will you choose if you are good at crafts?

A. Elder Assistance.

B. Early Childhood Education.

C. Health Care.

D. Teach English.

22. What can a volunteer do in Health Care?

A. Assist doctors in sorting out medicines.

B. Read stories to children aged one to five.

C. Participate in students' cultural activities.

D. Accompany the elders to the grocery store.

23. When can you volunteer at the elder care center?

A. On September 3.

B. On September 20.

C. On August 24.

D. On August 28.

B

Desiree was only four when she lost her Dad. Instead of gradually adjusting to his death, Desiree refused to accept it and even wanted to die so as to be with her father. Concerned about her daughter, Rhonda turned to her mother, Trish Moore, for help.

November 8 of 1993 would have been Ken's 29th birthday. So Trish advised Desiree to send her father a card. Desiree's eyes lit up as she dictated a letter, "Happy birthday, Daddy. I love you and miss you. I hope you get this and can write to me on my birthday." Trish wrote the message and their address on a small piece of paper and tied it to the end of the string on a balloon with a drawing of the Little Mermaid(美人鱼).Finally, Desiree released the balloon.

On November 12 in eastern Canada, Wade MacKinnon was duck-hunting. Suddenly something in the bushes caught his eye. Curious, he approached to find a silver balloon. The letter finished with a mailing address in Live Oak, California. The balloon traveled 3,000 miles. What a coincidence! A Little Mermaid balloon landed at Mermaid Lake. To help Desiree, the MacKinnons wrote her a letter with a birthday card and an adaptation of The Little Mermaid.

The MacKinnons' package arrived later on Desiree's birthday. The letter read, "Happy birthday from your daddy. You must be wondering who we are. Well, it all started There are no stores in heaven, so your daddy picked us to do the shopping. We know your daddy loves you very much and wants you to be happy and not sad. Lots of love, the MacKinnons. "

Tears in eyes, Desiree said, "I knew Daddy would find a way not to forget me." Next, Trish began to read the Little Mermaid to her, in which the mermaid was finally carried away by angels. "The mermaid goes to heaven just like Daddy!” Desiree said with delight. She understood then her father was with her always.

24. Why did Rhonda ask her mother for help?

A. Her husband passed away too young.

B. She wanted to free Desiree from sorrow.

C. Desiree kept her distance from her father.

D. She had no time to read books to Desiree.

25. What do we know about the balloon?

A. It travelled a long distance for several days.

B. It was decorated with some silver strings.

C. It landed just at the MacKinnons' house.

D. It was tied with the book the Little Mermaid.

26. Which of the following best describes the MacKinnons?

A. Demanding.

B. Humorous.

C. Caring.

D. Generous.

27. What is the best title for the text?

A. A Fantastic Adventure of a Balloon

B. A New Story of the Little Mermaid

C. A Heartbreaking Experience of a Girl

D. A Magic Response from "Heaven"

C

We have heard some interesting ways that 5G wireless technology might change our lives in the, future.

5G short for the 5th generation mobile communication technology, promises Internet speeds between 50 to 100 times faster than current 4G systems. While 5G is set to be used in some limited areas of America this year, much of the world is not expected to receive widely available service until 2023.

One project in Britain, however, is already testing this superfast technology on an unlikely group of Internet users-cows. The project was developed by American technology company Cisco Systems. It also receives money from the British government Cisco says the program seeks to explore the future of 5G connectivity in rural areas around the world.

Testing areas were set up at farms in. three rural areas of England. The cows are equipped with 5G-connected devices(装置)that link up to a robotic milking system, which uses sensors and machine learning to fully automate the process. System designers say technology takes over after a cow feels ready to be milked and walks toward an automatic gate. The device is designed to recognize each individual cow. It then positions equipment to the right body position for milking. During the process, machines release food for the cow as a reward.

Other 5G technology tools include automated brushes that turn on when the cow

rubs up against them. Sensors also control the amount of light to the cows' living areas depending on the weather. And, an automatic feeding system makes sure the animals always get enough to eat.

Duncan Forbes, head of the project, told Reuters that the project shows the farm's cow operations can be greatly improved with 5G technology and that the experiment provides strong evidence that 5G technology can be widely used in the future, not just on farms in Britain, but in rural communities across the world.

28. What is the purpose of Cisco Systems' program?

A. To win financial support from British government.

B. To test the effects of 5G technology on animals.

C. To promote its technological development in Britain.

D. To expand the future use of 5G in rural communities.

29. What does the underlined word "It's in Paragraph 3 refer to?

A. The project.

B. The company.

C. The technology.

D. The group.

30. What can we learn about 5G according to the text?

A. It is no worse than 4G in terms of speed.

B. It is already widely available in the world.

C. It enables cows to control their own milking.

D. It is based on sensors and machine learning.

31. In which section of a newspaper may this text appear?

A. Entertainment.

B. Lifestyle.

C. Education.

D. Technology.

D

Does the amount of cash in a lost wallet influence how likely a person is to return it? Classical economic theories suggest that the greater the appeal, the less likely we are to be honest-but a new study turns the idea on its head, finding altruism(利他主义)，and a powerful hate for viewing oneself as a "thief' outweigh the financial attraction.

A team of researchers conducted a huge experiment concerning 355 cities in 40 countries. More than 17,000 identical wallets were dropped off at public places, each containing a grocery list, a key, and three business cards in the local language using

made-up names and an email address. Some had no money while others contained the equivalent(等值)of $13.45.

According to the research, people on average returned 40% of wallets with no money in them but 51 % with money. It also shows extreme differences between countries. But although rates of people's honesty varied greatly from country to country, one thing remained remarkably constant: wallets with money, as opposed to no money, raised reporting rates.

In the US, the UK and Poland, they repeated the experiment with even more money: $94.15, which increased reporting rates by an average of 11 % compared to the smaller amount. They also found that having a key expanded reporting rates by 9.2%.

The findings, which run counter to a fundamental principle of classical economics, suggest honesty, altruism and self-image can sometimes be more influential than economic self-interest.

A purely economic approach to behavior suggests people would keep the wallets with the larger amounts of money due to the increased financial reward, but economics often doesn't account for a person's sense of honesty or self-image, according to behavioral scientists. Altruism also influenced the findings, the researchers say. Since the key is valuable to the owner but not the finder, this pointed toward an altruism concern in addition to the cost of negatively updating one's self image.

32. What does the author intend to do in Paragraph 2?

A. Introduce a new topic for discussion.

B. Add some background information.

C. Describe a widely conducted experiment.

D. Provide the research results for the readers.

33. What's the average reporting rate of a wallet with $94.15 inside?

A. 11%.

B. 20.2%.

C. 51%.

D. 62%.

34.What does the underlined phrase "run counter to" in Paragraph 5 mean?

A. Go against.

B. Account for.

C. Agree with.

D. Focus on.

35. What's the main idea of the text?

A. Classical economic theories have already been out of date.

B. People are more likely to return a lost wallet with more cash.

C. An experiment conducted worldwide proves people's altruism.

D. Rates of people's honesty vary greatly from country to country.

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’s great fun with your favorite four-legged friend outdoors. But unfortunately for humans and pets alike, spending an abundance of time outdoors can have a troublesome, downside: tick (扁虱)bites. "Tick season" actually takes up most of the year. 36 The following safety tips may help you protect your pet from harmful tick bites.

Lessen Your Pet's Exposure to Ticks

37 Usually they are particularly fond of tall grasses and brush. If possible, clear your yard regularly to create a safer environment for your pet to play in. If you think that your pet may be exposed to ticks, speak to your vet to discuss safe, effective products that may be able to prevent the attachment of ticks.

Check Your Pet for Signs of Ticks

Check your pet for ticks daily, especially if he or she has been playing outside or in a wooded or grassy area. 38 Run your hands along your pet's body, feeling for small bumps(肿块)and looking for dark spots. Ticks can be black, brown, and can range in size.

Know How to Safely Remove a Tick from Your Pet

Removing a tick from your pet can be a terrible task but it's important to act quickly if you find evidence of a tick on it, as diseases can be spread from the creatures within a few short hours.

39 Among them using the tick remover is the most commonly used one. 40

A single bite from a disease-carrying tick can spread disease to your unsuspecting pet. Symptoms of diseases include fever, loss of appetite and reduced energy. If your pet shows any of these signs, seek veterinary(兽医的)help as soon as possible. A. Know the Symptoms

B. Ticks can live in all types of environments.

C. Wash away the ticks you've removed in the toilet

D. Areas to check include most parts of the body.

E. And summer months tend to see an increase in bites.

F. After removing a tick from your pet, always clean the wound.

G. There are varieties of removal methods that can be found online.

第三部分英语知识运用(共两节，满分45分)

第一节完形填空(共20小题；每小题1.5分，满分30分)

阅读下面的短文，从短文后各题所给的四个选项(A、B、C和D)中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。

I don't remember the day my mother saved my life. But for her, the 41 of that day is vivid. When she 42 those events, she's thirty five years old again and I am a tiny baby in her arms.

It was early March, but the 43 wind bit like it was the depths of December. My mother 44 the blanket even tighter around me as she hurried to the 45 door.

I was two months old, and that was our third 46 to the doctor that week. Each time

a different face said the same words. "It's 47 . Just a simple cold, ma'am." That day was no different. My mother left, feeling 48 ,convinced there must be something wrong with my breathing. At home, she kept me closer than normal, 49 monitoring my breathing.

When I woke up the next day, fighting for breath, her 50 were around me with quick

sureness, and I was rushed to the 51 . We flew past red 52 . "Breathe, Alana! Breathe!" she cried out. We reached the hospital, and her arms were around me again. "This baby can't 53 !" my mother shouted. Even as doctors 54 me, her arms never let me go.

I have grown up in Mum's arms. Today I'm seventeen, and for most people that means the times for 55 . are over. But when I'm applying for colleges, I 56 at the computer screen for hours. Suddenly, I feel 57 , not knowing what to do. I realize that dependence is not a(n) 58 . Instead, with someone by my side, I am much

stronger than I will ever be 59 . I may not remember the moment my mother saved my life so long ago. 60 . looking back, I see that my mother saves my life every day.

41. A. show B. memory C. imagination D. video

42.A.recalls B. causes C. describes D. reports

43. A. warm B. gentle C. icy D. strong

44. A. pulled B. rolled C. sewed D. wrapped

45. A. clinic B. hotel C. cinema D.museum

46. A. invitation B. service C. visit D. gift

47. A. everything B. nothing C. anything D. something

48. A. excited B. relieved C. frightened D. upset

49. A. constantly B. casually C. exactly D. secretly

50. A. legs B. hands C. eyes D. arms

51. A. car B. kitchen C. garden D. bus

52. A. buttons B. lights C. flowers D. shirts

53. A. sleep B. cry C. move D. breathe

54. A. supported B. greeted C. surrounded D. praised

55. A. love B. dependence C. money D. complaint

56. A. point B. laugh C. stare D. shout

57. A. unsure B. peaceful C. crazy D. energetic

58. A. advantage B. weakness C. pity D. dream

59. A. nervous B. awkward C. alone D. sick

60. A. Otherwise B. Besides C. Therefore D. However

第Ⅱ卷

注意：将答案写在答题卡上。写在本试卷上无效。

第三部分：英语知识运用(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。

Ever wondered how many calories are in the human body? Or ever wondered why old people have 61 (big) ears than they used to? The winners of Ig Nobel Prizes(搞

笑诺贝尔奖)have got the answers.

The Ig Nobel Prizes, founded in 1991，are to honor achievements 62 first make people laugh, and then make them think. The ceremony. 63 (take) place at Harvard University every year. Winners' acceptance 64 (speech) are limited to 60 seconds, 65 (strict) policed by an eight-year-old girl.

The honored research might seem ridiculous 66 first sight, but that doesn't mean it lacks scientific value. For example, the research in 2006 on why dry spaghetti tends to break into more than two pieces was important 67 (discover) failure in bridge spans(跨度)or human bones. And a follow-up paper 68 (publish) by MIT physicists several years later. But people are more likely to read about 69 (break) spaghetti than to read an academic paper. Even when there is no immediate usefulness，70 is still good to encourage people to observe and think.

第四部分写作(共两节，满分35分)

第一节短文改错(共10小题；每小题1分，满分10分)

假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处，每处错误仅涉及一个单词的增加、删除或修改。

增加：在缺词处加一个漏字符号(∧)，并在其下面写出该加的词。

删除：把多余的词用斜线(\)划掉.

修改：在错的词下划一横线，并在该词下面写出修改后的词。

注意：1.每处错误及其修改均限一词。

2.只允许修改10处，多者(从第11处起)不计分。

One day, when I was on the train, there were a crowd at one of the stations. A old man and a little girl tried to get on. Just as she stepped on the train, the guard shut the gate and leave the girl outside. The girl ran after the train and cried, "Mister, let me to go with him. My grandpa is blind." Not knew where be was, the old man felt through the air for the gently hand of the girl. I took care the old man and got him off at the next station, when we waited till the girl came. That was the most touching thing I had never experienced.

第二节书面表达(满分25分)

假定你是李华。你的英国外教Mr. Green非常喜欢中国民间音乐。请你给他写一封电子

邮件，邀请他参加你校组织的师生民乐演奏会，内容包括：

1.提出邀请；

2.演奏会时间、地点、活动安排等；

3.表示期待。

注意：

1.词数100左右；

2.可以适当增加细节，以使行文连贯；

3.可能用到的词汇：民乐演奏会Folk Music Concert

唐山市2019-2020学年度高三年级摸底考试

英语试题参考答案

卷A

1. B

2. C

3. A

4. B

5. A

6. A

7. B

8. C

9. A

10. C 11. A 12. B 13. B 14. A 15. C 16. B 17. B 18. C

19. A 20. C 21. B 22. A 23. B 24. B 25. A 26. C 27. D

28. D 29. A 30. C 31. D 32. C 33. D 34. A 35. B 36. E

37. B 38. D 39. G 40. A 41. B 42. A 43. C 44. D 45. A

46. C 47. B 48. D 49. A 50. D 51. A 52. B 53. D 54. C

55. B 56. C 57. A 58. B 59. C 60. D

卷B

1. A

2. C

3. B

4. A

5. B

6. B

7. A

8. C

9. C

10. C 11. B 12. A 13. A 14. B 15. C 16. A 17. A 18. C

19. C 20. B 21. B 22. D 23. C 24. C 25. D 26. B 27. A

28. A 29. D 30. B 31. A 32. B 33. A 34. D 35. C

36. E

37. B 38. D 39. G 40. A 41. A 42. B 43. D 44. C 45. B

46. D 47. A 48. C 49. B 50. C 51. B 52. A 53. C 54. D

55. A 56. D 57. B 58. A 59. D 60. C

语法填空：

61. bigger 62. that/ which 63. takes 64. speeches 65.

strictly

66. at 67. to discover 68. was published 69. breaking 70. it

短文改错

One day, when I was on the train, there were a crowd at one of the stations. A

old man and

was An

a little girl tried to get on. Just as she stepped on the train, the guard shut the

gate and leave the

he left

girl outside. The girl ran after the train and cried, “Mister, let me to go with

him. My grandpa is

blind.” Not knew where he was, the old man felt through the air for the gently

hand of the girl.

knowing gentle I took care ∧ the old man and got him off at the next station, when we waited till

the girl came.

of where

That was the most touching thing I had never experienced.

ever

One possible version

Dear Mr. Green,

There will be a Chinese Folk Music Concert in our school with the aim of enriching our school life. Knowing that you are interested in Chinese folk music, I’d like to invite you to attend it.

The concert is to be held at 7: 00 pm. this Sunday in the lecture hall of our school, which features a lot of traditional Chinese folk music works. Some teachers and students will play many beautiful music pieces using traditional instruments such as Erhu, Pipa, Guzheng and so on. I’m sure they will give you a very impressive concert, through which you will learn more about Chinese folk music.

Looking forward to your coming.

Yours,

Li Hua

听力原文

第一节

Text 1

M: Wow! What a beautiful city! Why don’t we first visit the art gallery and then go to the zoo?

W: T o tell you the truth, I’m not really interested in going there.You know, there are some nice places to buy souvenirs.

Text 2

M: I’d like to make an appointment to see Dr. Carter. Is it possible to make it early, like 7:30 am.?

W: No, I am sorry. Um . . . how about Tuesday at 8:00 am. or Thursday at 8:15 am.? M: Well, in that case, Thursday would be fine.

Text 3

M: Linda, do you have everything ready for college? Did you pay housing fees, sign up for the meal plan and meet with your academic teachers?

W: Yeah, I did that a few days ago.

Text 4

M: Hi, Joanne. It is not easy for a newcomer like me to find a book here.

W: Don’t worry. At the beginning of every term, introductory tours will be given by the librarian.

M: Oh, really? They are considerate.

Text 5

W: Oh, hi. What is your name again? I can’t keep straight all the students’ names in our Medical School.

M: It’s okay, Miss Smith. I have a hard time remembering names.

Text 6

W: Hi, Steven. What are you up to?

M: I was just concerned about Jack. He hasn’t been himself lately. He took the civil service

exam and failed.

W: He must feel depressed.

M: Yeah. He’s been sitting in his room every day for the last 4 days.

W: Why don’t we take him out? We can try to take his mind off it. At least show him that

we’re there for him.

M: That’s a great idea. Why don’t you call him, Alice? I have already talked to him a couple of

times and it might be good for him to hear from somebody else.

W: OK. I’ll call you back after I’m done.

M: Sounds good.

Text 7

W: Hey, Frank, I have just got a working holiday visa for the UK, and I wonder what

I can do there.

M: The working holiday visa lasts six months, and you can work for three months.

If your English is good, you shouldn’t have a problem getting work in a bar. But if you don’t like the noisy, smoky and no tipping bar, you can work in a restaurant.

That’s another way to use your English, meet some different people and more importantly, you can get some tips.

W: OK, I prefer to work in a restaurant. My visa is for 6 months, so I’ll study for the first 3 months and work for the second 3 months.

M: But remember, i t’s a holiday. I t’s not for studying. You tra vel from place to place and you pick up jobs on the way. You can work for a maximum of three months, but no more.

W: Oh, that’s interesting. Thanks a lot.

M: If you have more questions, I’ll be there.

Text 8

M: Dear listeners, for today’s show, I have Abi gal Harrison with me. The girl wants to be the first astronaut on Mars. Abigal, welcome to our show.

W: It is a pleasure to be here.

M: Would you please tell our listeners when you got the idea of going to space? W: When I was 5 years old, standing in my backyard on a cold winter night. My mind swam with questions. To find more, I wanted to go to space.

M: Do your family members support you?

W: Both my mum and sister didn’t believe it until they found I was serious. My mum told me making a specific plan was the first step towards making my big dream a reality, and it worked.

M: From then on, you founded a nonprofit organization, earned private pilot’s license, ran a marathon, worked at the Kennedy Space Center, spoke at conferences around the world Wow, you have done so much!

W: Well, that is my mum’s influence. My teacher helped me in a different way. Text 9

M: Well, you know, I enjoy staying in shape. I generally get up every morning at 5:30 a.m., and exercise indoors.

W: Hey, jogging to the refrigerator for a glas s of milk doesn’t count.

M: Yes, I usually lift weights. This helps me build muscle strength. Besides, I am fond of boxing because it helps me burn off stress and reduce anxiety.

W: Oh yeah, those lies. I’ll never buy this story. Actually, a study suggests using

a fitness tracker can record and encourage you to take 10,000 steps a day. Your

immediate action matters. Not your words!

M: 10000 steps? That is too much. Will a quarter as much as that help?

W: Of course. Clay Marsh from Ohio State University says “Any amount of activity will do. As long as you stick to it, you will benefit.”

M: OK. I will start walking tomorrow.

Text 10

Here is a piece of news for deer lovers. Mary, an 18-year-old senior at Nixon High School, worked out a noise to drive the deer away. A deer jumped into the road and hit her uncle’s truck. The accident inspired her to look for a deer-defensive measure.

According to the data from a science project, deer and humans hear the world differently. People sense sounds in the range of 20 to 20,000 hertz. Deer live life a little higher. They can hear between about 250 and 30,000 hertz. That means deer can hear sounds well above what people can sense.

For her experiments, Mary found a clearing, a small field where she set up a speaker and a remote control. When it sent out a 14,000-hertz sound, it didn’t send the deer fleeing. She increased the sound gradually, and when the speaker broadcast 25,000 hertz, the deer just walked away.

The teen expects her w arning “whistle” to be broadcast from s peakers along the sides of a highway. These will warn the deer to stay away — even when there is no car in sight. “It’s like a stoplight for animals,” she says. That way it m ay keep deer off the road.