Units 3—4 Review

满分150分；时间120分钟。

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. How much would the woman pay for two skirts?

A. $10. B. $19. C. $20.

2. What is the probable relationship between the speakers?

A. Classmates. B. Doctor and patient. C. Teacher and student.

3. How does the man usually go to work?

A. By car. B. By bus. C. On foot.

4. What will the man do during the summer vacation?

A. Do a report. B. Go to the Great Wall. C. Study at home.

5. When does the bank close on Saturday?

A. At 2:00 pm. B. At 3:00 pm. C. At 4:00 pm.

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 was the news about?

A. A space station. B. The space. C. Astronauts.

7. What does the man want to do some day?

A. Travel around the earth. B. Go to the moon. C. Do science research.

听第7段材料，回答第8至10题。

8. What does the woman hold a party for?

A. A wedding. B. A graduation. C. A birthday.

9. When will the woman hold the party?

A. On Friday. B. On Saturday. C. On Sunday.

10. What will the man take to the party?

A. Orange juice. B. Wine. C. Coke.

听第8段材料，回答第11至13题。

11. Why is the woman calling the man?

A. To ask him to watch a game. B. To invite him to dinner. C. To know about his illness.

12. What does the woman speak highly of about the man’s mother?

A. Her lemon tea. B. Her chicken soup. C. Her special medicine.

13. What should the man do according to the woman?

A. Call a doctor. B. Have a good rest. C. Watch a movie.

听第9段材料，回答第14至17题。

14. What is Timmy most interested in?

A. Playing the piano. B. Playing the violin. C. Listening to music.

15. What is Timmy’s main purpose at the moment?

A. To make new friends. B. To go to concerts. C. To learn from others.

16. What are the speakers both weak in?

A. Sports. B. Music classes. C. Theory of music.

17. Whom would the speakers turn to?

A. Timmy’s uncle. B. Lily’s uncle. C. Their teacher.

听第10段材料，回答第18至20题。

18. What is the aim of the school trip?

A. To visit a museum. B. To enjoy a film. C. To see a theater.

19. Where can the listeners’ parents pick them up?

A. In the car park. B. Behind the school library. C. At the school gate.

20. What should the listeners bring with them?

A. Some food. B. A pencil. C. A notebook.

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A、B、C和D四个选项中，选出最佳选项。

A

Events at the Fleet Science Center

Superpower Dogs

Join an adventure to experience the life-saving superpowers of some of the world’s most amazing dogs on the big screen. No stranger to superheroes himself， Chris Evans narrates (讲述) this inspiring true story about remarkable dogs that save lives.

Time: March 2， 2:00 pm

Price: Adult (Age 13—65) $21; Junior (Age 3—12) $18; Senior (Age 65+) $19

The Sky Tonight

Early show: March 4， 7:00 pm to 8:00 pm

Late show: March 4， 8:15 pm to 9:15 pm

Join us for a tour of the solar system. Journey through the universe with us as we explore a new topic each month.

Price: Adult (Age 13—65) $19; Junior (Age 3—12) $17; Senior (Age 65+) $18

Make-It Workshop

We invite you to stop by Studio X to try your hand at making. Make-It Workshop activities change monthly and fees vary.

Participants can purchase tickets at Studio X on the day of the workshop.

Time: March 7， 11:30 am to 3:30 pm

Suds amp; Science

Sometimes， the most interesting discussions occur over a beer or a glass of your favorite wine. That’s the concept behind Suds amp; Science， a monthly event that brings scientists face-to-face with the general public in a neighborhood bar.

Location: Thorn Brewing， 3176 Thorn St， San Diego， CA 92104

Time: March 8， 6:30 pm to 8:00 pm.

Price: $6 at the door. Food amp; drinks are available for purchase. Please come early to place your orders at the bar， as staff will not be available to take orders during the event.

21. How much should one aged 70 with a kid aged 3 pay for the film-watching event?

A. $36. B. $37. C. $39. D. $42.

22. When will the Sky Tonight’s late show end?

A. At 8:00 pm. B. At 8:30 pm. C. At 9:00 pm. D. At 9:15 pm.

23. What do we know about the event on March 7?

A. It is a hands-on activity. B. It needs booking in advance.

C. It invites Chris to narrate a story. D. It includes a tour of the solar system.

B

When Gitanjali Rao was 11， she invented equipment that quickly tests lead in water. She became the youngest ever winner of the Discovery Education 3M Young Scientist Challenge.

In 2016， the news was full of stories about dangerous drinking water in Flint， Michigan. The water had too much lead in it. Lead is a metal that can cause health problems when people eat or drink it.

There was home test equipment that could detect lead in water. But these tests didn’t work very well. They took too long and often gave wrong results. Gitanjali wondered if she could create a test that was quick， easy， and right.

One day， Gitanjali read a news story about using carbon nanotubes (纳米管) to test for poison in the air. The nanotubes were coated with a chemical that stuck to the poison. When the poison stuck， it changed the way electricity flowed through the tubes. Scientists could measure the electric flow to see how much poison was in the air. Gitanjali wondered if she could use the same way to detect lead in water.

She e-mailed a chemistry teacher at her local school. They didn’t have a fancy lab， but it was good enough for Gitanjali to test whether her detector could sense lead at all. They started by testing clean water. The electricity meter (电表) jumped all over the place. Gitanjali learned how to adjust it. Next they added tiny spoons of lead. After many， many tries—her detector worked.

Then Gitanjali made a phone app so users could use the results at once on their phones. She entered her idea in a big national competition. When she was picked for the semi-finals， she was assigned an advisor to help her work on her equipment. And—she won!

Gitanjali’s next goal is to sell her equipment in stores and make versions that test for different kinds of pollution. She is also very interested in genetics (遗传学).

24. What can we know about the home test equipment from Paragraph 3?

A. It’s quick. B. It’s expensive. C. It’s time-saving. D. It’s inaccurate.

25. Where did Gitanjali get the inspiration of her invention?

A. From the news story she read. B. From a chemistry teacher.

C. From a chemistry lesson. D. From the 2016 news.

26. What does the underlined word “it” in Paragraph 5 refer to?

A. The place. B. Her detector. C. The quantity of lead. D. The electricity meter.

27. What words can best describe Gitanjali?

A. Determined and creative. B. Hard-working and outgoing.

C. Confident and devoted. D. Energetic and honest.

C

The early life of the green sea turtle is full of danger. Only one in 1，000 baby sea turtles survive to adulthood. From its home in the sand， it breaks its egg with an egg tooth. Its mother is not there to help it. Instead， it is greeted by crabs， coyotes， and dogs waiting to eat it for dinner. To survive， the baby turtle must hide in the sand until night. Then， it moves slowly to the sea.

The small turtle must swim hard to reach the ocean waters. In the sea， it tries hard to find food. It must also keep itself from being food for fish.

As dangerous as the sea turtle’s life is in the natural world， its most dangerous enemies are humans. The rubbish left by humans in the ocean causes problems for the small green sea turtle. A little turtle might eat a piece of plastic in the sea. It might also eat oil on the ocean’s surface. Young turtles also get caught in fishing nets. There are laws against hunting sea turtles. Still， many are hunted， both for their meat and for their shells. All of these dangers must be prevented.

Sea turtles that do survive to grow into adulthood go through many changes. For example， adult green sea turtles weigh about 500 pounds. They stop eating jellyfish and other meat and eat only plants. And they may plan a trip to go back home again. A mother sea turtle goes back to the beach where she was born. This is the only place where she will lay eggs. Even if it has been forty years since she was a baby， she always knows her way back home.

28. Why do baby turtles move to the sea at night?

A. They dislike sunshine. B. They need to avoid enemies.

C. They can find food easily then. D. They prefer lower temperatures.

29. What does the author think of the young turtles in Paragraph 3?

A. Pitiful. B. Careless. C. Interesting. D. Courageous.

30. What can we learn about sea turtles from the last paragraph?

A. They mainly feed on fish and meat. B. They can live for about 40 years.

C. They produce eggs at their birthplaces. D. They visit their beach homes every year.

31. What is the text mainly about?

A. The homes of green sea turtles. B. How sea turtles find their food.

C. The dangers faced by sea turtles. D. How young turtles become adults.

D

A robot created by Washington State University (WSU) scientists could help elderly people with Alzheimer’s Disease (阿尔茨海默病) and other limitations live independently in their own homes.

The Robot Activity Support System， or RAS， uses sensors (传感器) installed in a WSU smart home to determine where its residents are， what they are doing and when they need assistance with daily activities. It positions through rooms and around obstacles (障碍) to find people on its own， provides video instructions on how to do simple tasks and can even lead its owner to objects like their medicine or a snack in the kitchen.

“RAS combines the convenience of a mobile robot with the activity detection technology of a WSU smart home to provide assistance in the moment， as the need for help is detected，” said Bryan Minor， a postdoctoral researcher in the WSU School of Electrical Engineering and Computer Science.

Currently， an estimated 50 percent of adults over the age of 85 need assistance with everyday activities such as preparing meals and taking medicine and the annual cost for this assistance in the US is nearly $2 trillion. Researchers hope that technologies like RAS and the WSU smart home will make it easier for older adults to live alone.

RAS is the first robot researchers have tried to include into their smart home environment. They recently published a study in the journal Cognitive Systems Research that demonstrates how RAS could make life easier for older adults struggling to live independently.

“While we are still in an early stage of development， our initial results with RAS have been promising，” Minor said. “The next step in the research will be to test RAS’ performance with a group of older adults to get a better idea of what prompts， video reminders and other preferences they have regarding the robot.”

32. What does RAS serve elderly people with?

A. Sensors. B. Smart objects. C. A mobile robot. D. A detection system.

33. What can we learn about RAS?

A. Its users are those over 85. B. Its function remains to be tested.

C. It is the first robot used in daily life. D. It can locate people and do complex tasks.

34. What is Minor’s attitude toward the future of RAS?

A. Doubtful. B. Critical. C. Positive. D. Unconcerned.

35. What is a suitable title for the text?

A. RAS， the First Robot to Make Home Smart B. Older Adults Will Benefit from RAS

C. Elderly People Leave the Nursing Home D. WSU Tests First Elder-Care Robot

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。

How Does Big Data Influence Our Life?

Today big data is one of the hottest buzzwords (流行行话). 36 Such large sets of data can be collected and analyzed (分析) to uncover information that can help organizations make informed decisions. 37

Thanks to data science， some industries have benefited greatly and accordingly， and many sides of our daily life have been changed.

Transport

Cities are getting bigger， busier， and more crowded. Removing road traffic completely is almost impossible. 38 For example， public agencies use data insights to map out regular routes， create other routes in case something goes wrong.

Entertainment

The entertainment services we use every day， such as music and video streaming apps， are largely designed on the basis of big data. 39 At a higher level， big data helps entertainment production houses predict the kind of shows that viewers from different age groups want so that they can create favored content.

Finance (金融)

In the past financial services such as insurance and banking were built on an inflexible， one-size-fits-all mode， which meant not only people with low credit scores were rejected in some ways， but also clients couldn’t get what they needed. 40

Big data has influenced many other sectors as well， like agriculture， science， education， and manufacturing， and it remains to reveal its full potential (潜能) in the future.

A. And this gives rise to big data.

B. A process like this is known as big data analytics.

C. But big data is able to assist in keeping it under control.

D. These platforms use data to discover what customers like most.

E. Now big data has made it easier to offer proper services to them.

F. It refers to a large amount of data that come in various forms sources.

G. The coming of big data analytics has influenced our lives in many ways.

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第三部分 语言知识运用（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。

I have invented robots that climb through pipes (管道) to check them for damage. Two of my 41 allow cars to be used as power plants on wheels. My 42 of building things began when I was a kid. It wasn’t until I 43 about Thomas Edison， though， that I really became excited about inventing.

When I was in fourth grade， our teacher gave us a 44 . We had to write to a company and learn about the 45 it made. Each student would then give a report in front of the class. I 46 the Thomas A. Edison Company.

Soon after I wrote to the company， our mailman 47 a package (包裹) to me. It contained a book about the 48 of Thomas Edison. How I 49 reading and rereading about his inventions! The ones that impressed me most were movies， recorded sound and the electric light. Edison became my 50 .

My dad noticed my interest in inventing and 51 me. He showed me how to turn my ideas into plans and， finally into 52 things.

Together， my dad and I 53 radios and televisions. Once， I surprised my dad with a tool I made to adjust the brakes (刹车) of our car. Later， we found a 54 tool in a store. That’s when I learned that 55 inventors often invent similar things. It is not 56 for this to happen. I learned， too， that not all great ideas work. 57 is a common part of the inventing process.

As my father and I worked together， I began to 58 that my dad was quite an inventor himself. His guiding hands， combined with my 59 in inventing， led me to become an engineer and inventor. But I am 60 to Thomas Edison， too， for first lighting that bulb inside me.

41. A. approaches" B. experiments C. inventions" D. reports

42. A. trouble" B. love C. need" D. way

43. A. talked" B. thought C. learned" D. anxious

44. A. project" B. lesson C. surprise" D. present

45. A. decisions" B. products C. orders" D. accounts

46. A. joined" B. owned C. started" D. chose

47. A. opened" B. offered C. delivered" D. lent

48. A. luck" B. life C. change" D. feeling

49. A. enjoyed" B. minded C. imagine" D. remembered

50. A. hero" B. teacher C. friend" D. boss

51. A. stopped" B. respected C. advised" D. encouraged

52. A. useful" B. strange C. new" D. common

53. A. repaired" B. borrowed C. bought" D. saw

54. A. new" B. broken C. similar" D. great

55. A. young" B. different C. great" D. real

56. A. perfect" B. easy C. practical" D. unusual

57. A. Imagination" B. Failure C. Happiness" D. Wealth

58. A. hope" B. explain C. realize" D. consider

59. A. honor" B. difficulty C. experience" D. interest

60. A. grateful" B. polite C. related" D. equal

第二节 （共10小题；每小题1.5分，满分15分）

阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。

China is leading the world in facial recognition algorithms (人脸识别算法). It is reported that its best algorithm can recognize 10 million people 61 a single mistake in less than a second.

The top five of the 39 facial recognition algorithms in the world come from China， according to a test， 62 released the results last Friday. YITU Technology， 63 Shanghai-based company that claimed both the top and second spot on the list， said that its top algorithm is able 64 (recognize) nearly every person in a sample base of 10 million. However， “it is very likely for a human brain to make 65 (mistake) in recognizing the identities (身份) of 100 people，” the company said. Algorithms from Beijing-based company Sense Time 66 (win) the third and fourth spot， while the Shenzhen Institutes of Advanced Technology (SIAT) claimed 67 (five) in the test. YITU said that higher facial recognition accuracy means that users gain 68 (good) experiences when 69 (use) related products. For example， when a user uses facial ID for payment on a smartphone， it will not authorize the payment for someone else with a similar 70 (appear) as the user， the company noted.

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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仅限一词；

2．只允许修改10处，多者（从第11处起）不计分。

Last weekend， there was art festival in our school. I was so exciting， for it was the first time for me to join in the activity.

Early in the morning， such many people came to our school， make it so lively. The students gave a warm welcome to the guest. I walked around or enjoyed the paintings. All of the works were from the students， that were so creatively， and I was impressed by it. Though they are busy with their studies most of the time， some students still managed to develop their hobbies. I should learn from them and develop into a hobby as well.

第二节 书面表达（满分25分）

假定你是李华，现正作为交换生在伦敦学习，你得知当地美术馆要举办中国画展览。请用英语写一封信申请成为志愿者。内容包括：

1．写信目的；

2．个人优势；

3．表达期望。

注意：

1．词数100左右；

2．可以适当增加细节，以使行文连贯。