On average, cars sit, doing nothing, 96 percent of the time. That makes them ideal candidates for the sharing economy. The potential to reduce traffic jams is enormous. A handful of car-sharing systems are already having a major impact on the total number of vehicles in our cities. Scholars have estimated that every shared vehicle removes nine to 13 privately owned cars from the streets.
The benefits will grow greatly as autonomous vehicles, that is, self-driving cars, currently available in experimental forms, gain a notable portion of the market. “Your” car could give you a lift to work in the morning and then, rather than sitting in a parking lot, give a lift to someone else in your family—or to anyone else in your neighborhood or social media community.
As a result, a single vehicle could go from one to 24 hours of use a day. A recent paper by our colleagues at the Massachusetts Institute of Technology report s that, under such conditions, the mobility demand of a city like Singapore could be met with only 30 percent of its existing vehicles. In addition to vehicle sharing, autonomy could open up a new wave of ride sharing. Already applications such as Via, uberPOOL and Lyft Line allow different people to share the same ride, cutting operating costs and individual fares. Autonomy could boost ride sharing even more because all trips could be managed online. In cities, the potential for ride sharing is significant, based on analyses by our Sense able City Lab at M. IT.
New York City, for example, is obviously shareable. Our lab’s HubCab project gathered data from 170 million taxi trips involving 13,500 taxis in the city—specifically, the GPS coordinates (协调) for all pickup and drop-off points and corresponding times between the two. We then developed a mathematical model to determine the potential effect of ride sharing applied to those journeys. The project introduced the concept quantitative results revealed how taxi sharing could reduce the number of cars by 40 percent with only rainimal delays for passengers.
Combine car sharing and ride sharing, and a city might get by with just 20 percent the number of cars now in use, with its residents traveling on-demand. Of course, such reductions are theoretical. In real life, they would depend on how willing people are to share rides and adopt self-driving technology. But any drop in the number of vehicles could lower the costs and energy associated with building and maintaining our mobility infrastructure (基础建设). Fewer cars might also mean shorter travel times, fewer traffic jams and a smaller environmental impact.
【小题1】What does the author imply in the first paragraph?| A．Car-sharing is still in its infancy. |
| B．Cars aren’t made full use of at present. |
| C．Privately-owned cars have decreased by 13%. |
| D．There have been fewer traffic jams in big cities. |
| A．They can reduce the mobility demand of big cities. |
| B．They will account for a large portion of the market. |
| C．They can make it convenient for people to share the same ride. |
| D．They will raise people’s awareness of environmental protection. |
| A．how trip-sharing has helped the city |
| B．how ride-sharing can be put into practice |
| C．why people are worried about taxi sharing |
| D．why mathematical models matter in making a city shareable |
| A．We should share not only cars but also rides. |
| B．People have no confidence in self-driving technology. |
| C．The estimated reductions of cars on streets are theoretically groundless. |
| D．Our mobility infrastructure cannot support the development of autonomy. |
A family attempting to travel to Australia without flying have arrived in the country after a three-and-a-half-month journey. Shannon Coggins, Theo Simon and their daughter Rosa, 19, left England to begin their 10 thousand-mile trip to Sydney on 16 August. The family was hoping to make it in time for Ms. Coggins’ sister’s wedding on 28 December.
The family saved up for several years to pay for the trip, which has cost them much more than air tickets would have done. They travelled through Kazakhstan, China, Laos, Thailand and Indonesia, and finally arrived in Dili, hoping to find a boat to cross the Timor Sea to Darwin, Australia. From there they planned to take a bus to Sydney.
“The world is a huge thing, and one personal thing that I do will never make the difference that we need but I want to live by my principles,” Ms. Coggins said. “I want a clean world for my daughter when she’s growing up in the future and the grandchildren. But the world is getting hotter. There is so much going on in Australia here at the moment with floods and fires, and I think we’ve all got to take that seriously.”
“All three of us have campaigned in different ways for action on climate change, so we decided our journey to Australia would have to be as low-carbon as practical,” Mr. Simon said.
The family arrived on the other side of the world just in time. But they said there were many moments during their journey across continents and oceans when they thought they might not make it to Australia. A conflict between Azerbaijan and Armenia, and the danger of travelling through Iran, forced them on a four day detour (绕行) through Russia where Mr. Simon almost get arrested.
“It hasn’t always been easy, but it was worth it”, Mr. Simon added. “We want to keep this beautiful planet, don’t we?”
【小题1】Why did the family travel to Sydney?| A．To take a global tour. | B．To attend a wedding. |
| C．To explore the nature. | D．To advocate saving energy. |
| A．They couldn’t afford the air tickets. |
| B．They joined a nationwide campaign. |
| C．They were afraid of the terrible weather. |
| D．They tried to reduce their carbon footprints. |
| A．Mr. Simon was arrested when going through Russia. |
| B．The family was discontent with the adventurous trip. |
| C．The family’s journey was not quite straightforward. |
| D．The family didn’t manage to reach Australia at last. |
| A．Tough but worthwhile. | B．Smooth but expensive. |
| C．Relaxing and incredible. | D．Inappropriate and disappointed. |
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【小题1】According to the passage, Sydney is best known for .| A．the Opera House | B．its business as well as arts |
| C．its beaches and surfing | D．the Botanic Gardens |
| A．With a personal visit. | B．By phone. | C．On the Internet. | D．Through a hotel. |
| A．To introduce three famous cities. | B．To recommend tourist activities. |
| C．To introduce some travel experts. | D．To attract tourists to book flights. |
You know Australia is a big country, but you may not know how easy it is to get around. The untouched beaches that go for miles and deserts that touch the horizon are just there, waiting to be reached and explored. The following are the different ways you can explore our vast country.
Getting around Australia:
Air
Flying is the best way to cover a long distance in a short time. Moreover, competition among airlines makes great flying fees available for you.
Drive
Australia has a vast network of well-maintained roads and some of the most beautiful touring routes in the world. It’s easy for you to find car rental companies at major airports, central city locations, suburbs and attractions.
Bus
Bus travel in Australia is comfortable, easy and economical. Buses generally have air conditioning, reading lights, adjustable seats and videos. Services are frequent, affordable and efficient.
Rail
Train travel is the cheapest and gives you an insight into Australia’s size and variety. Scheduled services are a great way to get quickly between our cities and regional centers.
Ferry
The Spirit of Tasmania runs a passenger and vehicle ferry service between Melbourne and Tasmania nightly. Extra services are running during summer rush hours. Ferries connect suburbs in our capital cities.
Walk
With easy on the feet pedestrian streets, walking is a great way to get around our cities.
Besides all the above, you can also experience some of the longest tracks and trails in the world in central Australia—impressive journeys of a thousand kilometers or more that can take several weeks to complete.
【小题1】The underlined word “untouched” in the 1st paragraph means __________.| A．unmoved | B．special |
| C．unpolluted | D．unconnected |
| A．More travelers make the flying fees among airlines higher than before. |
| B．You can easily rent a car to explore its most beautiful touring routes. |
| C．Taking a bus tour is the most comfortable, economical and efficient way. |
| D．Train services can offer you more comfort than any other means of transport. |
| A．only at night hours | B．only during rush hours |
| C．several times a day | D．between different cities |
| A．Scientific journal | B．Magazine |
| C．Travel Guide | D．Text Book |
| A．By air. | B．By car. |
| C．By bus. | D．On foot. |
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