Once a small county in mountains and little-known to the rest of China, Chongli in Hebei Province, where most of the snow sports
A warning system to prevent drivers from falling asleep was introduced at the 2020 China International Fair for Trade in Services,
Recently, police in Mumbai have come up with a new system to punish those who cannot wait at traffic lights
注意：1.文章的开头已经给出。
2.提示词: 报废车abandoned vehicles
 对校车的信任度 |  对校车的担心 |
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5 . Traffic Management
Traffic lights are key tools for regulating traffic now.They are not, however, perfect.Drivers exchange the traffic jams that would happen at unmanaged crossings for a pattern of stop-go movement that can still be annoying, and which burns more fuel than a smooth passage would.
Creating such a smooth passage means adjusting a vehicle's speed so that it always arrives at the lights when they are green.That is theoretically possible, but practically hard.Roadside signs wired to traffic lights can help get the message across a couple hundred metres from a crossing, but such signs are expensive, and are not widespread.Margaret Martonosi and Emmanouil Koukoumidis at Princeton University, and Li-Shiuan Peh at the Massachusetts Institute of Technology, however, have an idea that could make the process cheaper and more effective.Instead of a hardwired network of signs, they propose to use mobile-phone applications.The driver must load the team's software, named SignalGuru, into his phone and then put it on a special thing attached to the inside of his car's windscreen, with the camera lens （镜头） pointing forward.SignalGuru is designed to detect traffic lights and track their status as red, yellow or green.It broadcasts this information to other phones in the area that are fitted with the same software, and — if there are enough of them, the phones thus each know the status of most of the lights around town.Using this information, SignalGuru is able to calculate the traffic-light schedule for the area and suggest the speed at which a driver should travel in order to avoid red lights.
Tests in Cambridge, Massachusetts, where five drivers were asked to follow the same route for three hours, and in Singapore, where eight drivers were asked to follow one of two routes for 30 minutes, revealed that SignalGuru was capable of predicting traffic-light activity with an accuracy of 98.2% and 96.3% respectively, in the two cities.This was particularly impressive because in Cambridge the lights shifted, roughly half-way through the test, from their unbusy schedule to their afternoon-traffic schedule, while in Singapore lights are adaptive, using detectors fixed under the road to determine how much traffic is present and thus when a signal should change.In neither case was SignalGuru fooled.
Fuel consumption fell, too —by about 20%.SignalGuru thus reduces both annoyance and fuel use, and makes going back and forth to work a slightly less horrible experience.
1. Roadside signs wired to traffic lights are not the best way to create a smooth passage because____________.| A．they are too costly and not widely used |
| B．they are expensive and easily break |
| C．they are complex and confusing to drivers |
| D．they are theoretically possible but practically useless |
| A．a camera | B．a computer |
| C．a mobile phone | D．a GPS system in one's car |
| A．help drivers avoid traffic accidents | B．allow drivers to adjust their speed |
| C．change the traffic lights in advance | D．send information to all cell phones |
| A．proved to be unreliable | B．operated at a high speed |
| C．understood drivers' schedules | D．functioned rather stably |
A warning system to prevent people from falling asleep while driving
In most big cities, it is easier to hire a taxi at a moment’s notice when the weather is good. But when it’s raining, people have a much harder time
1. 交通出行；
2. 必备衣物。
注意：
1. 词数不少于50；
2. 开头和结尾已经给出，不计入总词数。
Dear Jim,
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Yours,
Li Hua
9 . Electric Cars
Where do cars get their energy from? For most cars, the answer is petrol. But some cars use electricity. These cars have special motors that get their power from large batteries.
Most people tend to think of electric cars as a new invention, but they have been around for a long time. They were popular when the technology for petrol engines was not very advanced. Recently, electric cars have again become popular because people want cars that pollute less.
Electric cars are better than petrol cars in several ways. The biggest benefit is reduced pollution. In areas where there is a high percentage of electric cars, there is less pollution. But it is important to understand that electric cars still cause pollution. Remember that the electricity to power electric cars has to come from somewhere, which is most likely a power station. Unless these power stations run on solar or wind energy, they are most likely burning coal and oil to make electricity. The second benefit of electric cars is a reduction in the dependence on foreign oil.
There are several countries, including the United States, which don't want to rely on oil coming from other countries to power their transportation systems. They want the power to come from within their country, and since electric cars can run on electricity from coal or nuclear power stations, there is less of a need to import oil.
Despite the benefits of electric cars, there are some problems with them as well. One disadvantage is that electric cars are more expensive than petrol cars. This is mostly due to the high cost of the batteries these cars need. Electric cars run on batteries, just like a mobile phone does. But unlike a mobile phone, you cannot charge your electric car's battery by plugging it into a wall. They need to be charged in special places. Now, there is a lack of places where people can charge the batteries. Another problem is that electric cars cannot travel as far as petrol cars. Some people are afraid that the battery will run out of electricity (and the car will stop) before they reach their destination.
Despite these problems, many people, including automobile industry experts, believe that the percentage of electric cars will increase in the future.
1. What's the main idea of Paragraph 3?| A．Electric cars make some countries independent. |
| B．Electric cars cause no pollution to the environment. |
| C．Electric cars have some advantages over petrol cars. |
| D．Electric cars need electricity from solar or wind energy. |
| A．Electric cars need special motors to get power. |
| B．Petrol cars are cheaper than electric cars. |
| C．Petrol cars can travel farther than electric cars. |
| D．Electric cars need special places to get charged. |
| A．electric cars will take the place of petrol cars |
| B．no one holds hope for electric cars at present |
| C．electric cars waste more energy than before |
| D．more and more people will use electric cars |
| A．argue and prove | B．inform and explain |
| C．attract and discuss | D．advertise and conclude |
1．使用方便（APP查看车辆，扫二维码开锁）
2．容易找到 便于存车
3．其它优点（该部分内容自拟至少两点）
注意：短文字数不少于100词
参考词汇： 智能手机smart phone扫二维码scan the QR Code
Dear John,
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Yours sincerely
Li Jin
