Taxi-sharing could have a good effect on car numbers.

Taxi-sharing services could reduce the number of cars on the road by 75%,a study has suggested.The Massachusetts Institute of Technology (MIT) study found that a number of 3,000 four-passenger taxis could take the place of the present number of 13,000 yellow taxis in New York City.But it would mean that people would have to travel with strangers.The study was based on data from 3 million taxi rides.

Most experts who are looking at our city future agree that there is a real need to do something about the heavy traffic.Studies suggest that around the world people waste 7 billion hours each year sitting in traffic.And the effects on the environment are also severe-with cars in traffic burning 3 billion more gallons of gas.

Prof Daniela Rus from MIT's Computer Science and Artificial Intelligence Lab writes,"Instead of taking one person at a time,drivers could transport two to four people at once,leading to fewer trips in less time to make the same amount of money."The team developed a math method that could arrange cars based on real-time requests."A system like this could allow drivers to work shorter time,while also creating less traffic,cleaner air and less stressful rush hour,"said Prof Rus.Such a system would be particularly suitable for smart cars controlled by computer systems, she added.

1.What's the shortcoming of sharing a taxi?

A. Passengers have to wait longer.

B. Passengers have to face strangers.

C. Passengers have to talk more.

D. Passengers have to pay more.

2.What is the main cause that leads to taxi-sharing?

A. The busy people. B. The serious pollution.

C. The heavy traffic. D. The gas shortage.

3.According to Prof Daniela Rus,who can also benefit from taxi-sharing?

A. The gas companies. B. The math experts.

C. The car producers. D. The taxi drivers.

4.The taxi-sharing trips had better to be carried out by .

A. cars controlled by computer systems

B. cars driven by the latest robots

C. the Science and Artificial Intelligence Lab

D. the Massachusetts Institute of Technology

練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：高中英語(yǔ) 來(lái)源：譯林牛津版2016-2017學(xué)年高一英語(yǔ)：必修一unit Growing pains練習(xí) 題型：完成句子

can't wait to; be hard on; now that; mix up; insist on; in a mess

1.The teacher ________ his students and they are afraid of him.

2.Dad says he's bought me a new bicycle. I ________ go home and see it.

3.It's easy to forget or get ________ when you are applying for several jobs.

4.________ everyone is here, we can start the meeting.

5.As a reward for my efforts, the manager ________ giving me a raise though I have been in this company for only six months.

6.— Allen, your bedroom is ________．

— Sorry, Mum. I'll put away my things at once.

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：江蘇省牛津譯林版英語(yǔ)Module5 Unit3 復(fù)習(xí)練習(xí) 題型：單項(xiàng)填空

_________ himself with necessary knowledge and skills, Tom went to the job market with much confidence.

A. Equipped B. Equipping

C. Having equipped D. Being equipped

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：浙江省杭州市2017屆高三考前熱身英語(yǔ)試卷 題型：短文填空

On many campuses, it has become a trend for a host of students to participate in various 1.(activity). Involved in some positive ones, students find them quite 2.(benefit) and rewarding.

A case in point is the English club 3. the activity of learning benefits me most. In contemporary world, English learning has gained great popularity and it is 4.great importance for students to learn English well. However, I 5.(meet) a variety of difficulties in study so far. For instance, I have trouble 6.(memorize) words. Sometimes, it is also difficult for me to understand the rules of grammar. Although I can read and write, I cannot express myself freely in English.

Then, how to get a good command of his language for me? I 7.(convince) that practice makes perfect and that joining the English club is worthwhile. In the English club, daily practice enables me 8.(speak) and write fluently. It is also through constant practice 9. I can master the rules of grammar and remember words. I will bear in mind that 10. I try my best to practice every day, the future of my English learning will be promising.

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：貴州省遵義市2016-2017學(xué)年高一下學(xué)期期末考試英語(yǔ)試卷 題型：短文改錯(cuò)

假定英語(yǔ)課上老師要求同桌之間交換修改作文，請(qǐng)你修改你同桌寫的以下短文。短文中共有10處錯(cuò)誤，每句中最多有兩處。錯(cuò)誤涉及一個(gè)單詞的增加、刪除或修改。

增加：在缺詞處加一個(gè)漏字符號(hào)（∧），并在此符號(hào)下面寫出該加的詞。

刪除：把多余的詞用斜線（＼）劃掉。

修改：在錯(cuò)的詞下劃一橫線，并在該詞下面寫出修改后的詞。

注意：1.每處錯(cuò)誤及其修改均僅限一詞；

2.只允許修改10處，多者（從第11處起）不計(jì)分。

Last Saturday,Mr.Wang is invited to dinner by his friends.He was so glad and he drank a lot of beers.As the result,he got drunk.After the meal,his friends persuaded him not drive,but he insisted on drive home.Fortunately,the car he drove ran into a tall tree a few minute later.Worse still,he was badly injurying.Soon the police came to the scene and sent her to the hospital.Now he has stayed in hospital for several days and is waiting for being fined by the police.How Mr.Wang regrets what he did it!

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：山東省棗莊市2016-2017學(xué)年高一下學(xué)期期末考試英語(yǔ)試卷 題型：短文填空

In China, December 2 1. (set) as “Traffic Safety Day”. With more and more cars coming into our families, they have 2. (great) improved our life. But too many cars have also brought about a lot of 3. (problem), such as traffic jams and traffic accidents. Every year, many people are reported to have got 4. (injure) or killed in traffic accidents. Some of the accidents might be caused by mechanical reasons. However, still too many just resulted 5. people’s breaking of traffic rules. So 6. is necessary for all of us to keep traffic rules in mind and obey them.

Traffic safety is everybody’s concern. It is important to make the children know that playing on the road is very 7. (danger). Helping the aged and children cross the street is always 8. kind deed; however you should be very careful when walking across the street. We should also remind our parents not 9. (drink) before they drive, not to run through red lists, not to talk and laugh while driving.10. all of us obey traffic rules, it will be safer to walk or ride on the road.

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：山東省棗莊市2016-2017學(xué)年高一下學(xué)期期末考試英語(yǔ)試卷 題型：閱讀理解

In front of the enormous Shibuya train station in Tokyo, there is a life - size bronze statue (雕像) of a dog. Even though the statue is very small when compared to the huge neon signs flashing, it isn’t difficult to find. It has been used as a meeting point since 1934 and today you will find hundreds of people waiting there for their friends to arrive—just look for the crowds.

Hachiko, an Akita dog, was born in 1923 and brought to Tokyo in 1924. His owner, Professor Eisaburo Uyeno and he were inseparable friends right from the start. Each day Hachiko would accompany his owner, a professor at the Imperial University, to Shibuya train station when he left for work. When he came back, the professor would always find the dog patiently waiting for him. Sadly, the professor died suddenly at work in 1925 before he could return home.

Although Hachiko was still a young dog, the bond between him and his owner was very strong and he continued to wait at the station every day. Sometimes, he would stay there for days at a time, though some believe that he kept returning because of the food he was given by street vendors (商販). He became a familiar sight to commuters over time. In 1934, a statue of him was put outside the station. In 1935, Hachiko died at the place he last saw his friend alive.

1.Why is the statue not difficult to find?

A. It’s a famous scenic spot in Japan.

B. The station is the largest in Japan.

C. It’s larger than the other statues.

D. It’s a meeting place for the people.

2.Which has the similar meaning as the underlined word “bond” in the last paragraph?

A. relationship B. desire

C. contact D. difference

3.Which of the following word can best describe the dog?

A. Friendly. B. Thoughtful.

C. Devoted. D. Enthusiastic.

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：山東省棗莊市2016-2017學(xué)年高二下學(xué)期期末考試英語(yǔ)試卷 題型：閱讀理解

Twelve years ago, I was a 19 -year-old guy living in the French A1ps. In February 2004, while skiing the back - country in Val d’Isere, I fell off the mountain, resulting in a right leg broken in several pieces. I was helicoptered to hospital, operated on immediately—and there started my adult life.

Before the accident, I was on a path to what I hoped would be a career in rugby. After-wards, and participation in collision sport was gone. I found a replacement in cycling. Unfortunately, by late 2012, I tried to cycle up Mount Ventoux, but it was halfway up when the pain hit me and I gave up.

A decision needed to be made on a next step. I had to have my lower right leg cut off. Several months later, I had my first proper weight - bearing prosthetic (假肢). I jumped on a train with my bike to Mount Ventoux. Though it certainly wasn’t my quickest, I did it.

Two weeks later, I was lucky enough to be given a running blade; I bounced on it that day and then raced my triathlon (三項(xiàng)全能) on the Monday. So, that was me, up and running - almost 12 years since I had last run.

Along with my running coach, I complete a “make every kilometre count” programme of four runs per week alongside a busy cycle, swim and gym schedule. So far this year, I have raced a 10k with an unexpected personal best in January of 38:04. I have my first speed triathlon in late March before heading to North Korea to compete in the Pyongyang Marathon on 10 April.

If my lifetime allows, I will attempt to race in every country in the world. In the meantime, I’ll keep on running — and, when it hurts and I’ m low on motivation, I’ll remember how far I’ve come and how much further I’ve got to go.

1.What had been the author’s special interest before the accident?

A. Skiing. B. Running.

C. Cycling. D. Rugby.

2.How was the author, s second try of cycling up Mount Ventoux?

A. He fell off and was seriously hurt.

B. He gave up because of great pain.

C. He was the quickest to get to the top.

D. He succeeded in getting to the top.

3.What is the author’s wish?

A. To race all over the world.

B. To participate in collision sport.

C. To cycle up Mount Ventoux again.

D. To compete in the Pyongyang Marathon.

4.Which of the following word best describes the author?

A. Enthusiastic. B. Considerate.

C. Determined. D. Generous.

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：廣東省肇慶市2016-2017學(xué)年高二下學(xué)期期中考試英語(yǔ)試卷 題型：閱讀理解

One day, Mr. Smith went to a dinner party. He was wearing very old clothes. He came into the room.But people in the room didn't look at him. They didn't ask him to sit at the table. He wasn't happy. But he said nothing.Mr. Smith went home quickly and put on his best clothes. He went back to the party. Everyone in the room stood up and looked at him. They gave him good food to eat.Mr. Smith took off his coat, and put it on the food and said, "Eat, coat!" The other people were surprised and asked, "What are you doing? Why do you do that?" Mr. Smith answered, "I am asking my coat to eat food. When I wore old clothes, you didn't look at me. You didn't ask me to sit down. Now I am wearing these nice clothes. And you give me good food. Now I see, you give the food to my coat, not to me."?

1.One day, Mr. Smith went to______.?

A. a birthday party B. a dinner party

C. an English party D. a movie

2.When he came into the room, the people didn't look at him. Why??

A. Because Mr. Smith wore old clothes.

B. Because the people didn't ask him to come.

C. Because Mr. Smith didn't say hello to them first.

D. Because it was night, they didn't see him.

3.Why did he go home quickly?

A. Because he didn't want to stay here.

B. Because he went home for his best clothes.

C. Because the people there asked him to leave.

D. Because he didn't like the food there.

4.What's the meaning of "surprised" in Chinese?

A. 高興的 B. 不滿的

C. 感到驚訝的 D. 生氣的

5.Which statement is right?

A. A person in good clothes should eat good food.

B. A good coat should eat good food.

C. We can't judge (判斷) a man by his clothes.

D. Mr. Smith is stupid (愚蠢的).

查看答案和解析>>

同步練習(xí)冊(cè)答案