C

    This month, Germany's transport minister, Alexander Dobrindt, proposed the first set of rules for autonomous vehicles(自主驾驶车辆). They would define the driver's role in such cars and govern how such cars perform in crashes where lives might be lost.

    The proposal attempts to deal with what some call the “death valley” of autonomous vehicles: the grey area between semi-autonomous and fully driverless cars that could delay the driverless future.

    Dobrindt wants three things: that a car always chooses property(财产) damage over personal injury; that it never distinguishes between humans based on age or race; and that if a human removes his or her hands from the driving wheel — to check email, say — the car's maker is responsible if there is a crash.

    “The change to the road traffic law will permit fully automatic driving,” says Dobrindt. It will put fully driverless cars on an equal legal footing to human drivers, he says.

    Who is responsible for the operation of such vehicles is not clear among car makers, consumers and lawyers. “The liability(法律责任) issue is the biggest one of them all,” says Natasha Merat at the University of Leeds, UK.

    An assumption behind UK insurance for driverless cars, introduced earlier this year, insists that a human “ be watchful and monitoring the road” at every moment.

    But that is not what many people have in mind when thinking of driverless cars. “When you say ‘driverless cars', people expect driverless cars.”Merat says. “You know — no driver.”

    Because of the confusion, Merat thinks some car makers will wait until vehicles can be fully automated without operation.

    Driverless cars may end up being a form of public transport rather than vehicles you own, says Ryan Calo at Stanford University, California. That is happening in the UK and Singapore, where government-provided driverless vehicles are being launched.

    That would go down poorly in the US, however. “The idea that the government would take over driverless cars and treat them as a public good would get absolutely nowhere here,” says Calo.

     Becoming Refreshed without sleeping

Sometimes there is just not enough hours in the day to get everything done and get a good night's rest.{#blank#}1{#/blank#} Once in a while you can get away with a sleepless night and still feel reasonably good by adjusting your meals and activities.

     {#blank#}2{#/blank#} The last thing you want to do when you are tired is get warm and cozy, this will cause you to fall asleep. Keeping the air conditioner on will make you feel much more alert and refreshed.

     Eat small amounts. Eating small amounts of healthy food will help refresh you. Fruit and nuts are a good choice because they are nutritious and will energize you {#blank#}3{#/blank#}Try to stick to low carbon meals to keep you going. Chewing gum after your snack or small meal will also help keep you awake.

     Keep it bright. When it is dark your body thinks it is time to go to sleep. Turn on lots of lights, which will trick your body into waking up and feeling better. {#blank#}4{#/blank#} You get double the benefits if it is daytime.

     Take a break. Taking a little break will help you in the long run. Turn up some energizing music to get yourself positive. Relax and talk to a friend in person or on the phone for a few minutes.{#blank#}5{#/blank#}

A. Keep it cool

B. Calm down and sleep

C. Avoid big, heavy meals as they will make you tired

D. Going outside whether it is day or night for some fresh air

E. Missing sleep regularly can make you sick and should be avoided

F. When you are tired, you may just want to sit around and do nothing

G. Having a good time for a few minutes will refresh you quicker than anything else.

    Half an hour into a cooking competition at Green Street Academy, Tyana Givens, 15, dipped a plastic spoon into a pot with tomatoes, bell peppers, onions, garlic and mushrooms over a burner in a science classroom. She and the two other students, Kalimah Ball and Maya Smith, were making meat sauce.

    The girls had spent the past five weeks learning how to grow their own produce using food computers-tabletop greenhouses controlled by computer programs-at Green Street Academy, a charter school in Baltimore. The course, which weaved together lessons on programming, food systems and agriculture, ended with an “Iron Chef”-style cooking contest.

    With the help of instructor Melanie Shimano, the girls finished their contest successfully using the food they planted in tabletop greenhouses. The tabletop greenhouses can control temperature, light and water inside using the computer code that the students wrote by themselves. Shimano, a 26-year-old entrepreneur, piloted(试行)the course as part of Green Street Academy's junior biotechnology class in the spring and will expand the program to other schools in the fall.

    “Technology is not something that a lot of teachers have a lot of resources for all the time, but it's something that's not difficult to do with a relatively low amount of funding,” Shimano said. “Baltimore is a center for startups and food, so kind of fostering that culture of being into technology and into design and seeing all the pieces fit together is really cool.”

    While her course is unique to Baltimore, it's part of a broader program born at the Massachusetts Institute of Technology's Media Lab called the Open Agriculture Initiative, or OpenAg, which aims to create inventive, sustainable food systems through open-source technology. In addition to 10 full-time staff and researchers, OpenAg is primarily an online community of about 1,400 educators, growers, chefs and retailers in 47 countries, according to Hildreth England, OpenAg's assistant director.

    “The interest level across the board generally comes from folks who are concerned about food systems and concerned about the environment, and it's usually a combination of the two,” England said.

The situation is that familiar — deadlines are approaching, time runs out, disorder and confusion fills the day. The feeling is just as familiar — a slightly faster heart rate, and shortness of breath. Yes, it is panic time.

    It's too late to kick yourself with "I should have started on this sooner." or "It was a mistake to accept this tight deadline." The only thing left to deal with the situation is to panic more efficiently.

    ① Focus.

Panic happens when you are on an overload — too many things to do, too much pressure, too little time. But if you focus on the tasks that you need to take care of, and line them up in a logical list, you can have better control of a highly stressful and wild situation.

    ② Get rid of distractions.

    Time wasters and unnecessary activities are the last things you need during this time. Let everyone know you are on panic mode and should not be disturbed unless it is an emergency.

    ③ Watch your time.

    Don't be too engaged in one detail so that you reduce your timing for the other important details. Mind the time and deal with each task so that you can finish all of the required activities sufficiently.

    Try to solve a panic situation as quickly as you can so that you can rest and get back your energy and strength for the next one.

    If you want to travel from Xi'an to Chengdu by train, it will take about 16 hours. But starting this month, the new Xi'an-Chengdu high-speed railway will shorten this travel time to three hours.

    The 643-kilometer line is China's first high-speed railway to run through the Qinling Mountains, which form a natural boundary (分界线) between China's north and south. With a speed of 250 km per hour, it's also the first mountain-heavy train line to provide a 4G network. Along the way, the train passes through two areas for rare (稀有) wild animals — one for pandas and the other for crested ibises (朱鹮).

    To reduce the railway's influence on the animals, workers and experts have designed and built the railway to be environmentally friendly. There were 345 wild pandas living in the Qinling Mountains. China currently has 1,864 wild pandas in total, according to the Xinhua News Agency.

    To avoid disturbing the pandas, the railway was designed to run through tunnels (隧道) within the area. Protective shields (防护屏) are placed near the entrance of each tunnel to stop animals from going in.

    To protect the thousands of crested ibises that fly near one part of the railway, protective nets have been set up to make sure the birds will not fly into a train.

    The nets are about 32 km long and 4 meters high. Experts tested different shapes and materials for building the nets before making their final choice.

    The annual World Economic Forum (经济论坛) took place in Davos, Switzerland, in Jan. 23-26, 2018. What did Chinese entrepreneurs (企业家) speak in the forum? Are there some quotable quotes for you?

    Jack Ma, founder and executive chairman of Alibaba Group

    "I think globalization cannot be stopped — no one can stop globalization, no one can stop trade. If trade stops, the world stops. Trade is the way to dissolve (溶解，结束) the war not cause the war," said Ma in Davos, "Google, Facebook, Amazon and Alibaba — we are the luckiest companies of this century. But we have the responsibility to have a good heart, and do something good."

★Richard Liu, founder and chief executive officer of JD

    "Business is not only a way to make money but also a way to contribute yourself, to help people," Liu said in a speech in Davos. "How can we face the fractured (分化的)world? That's the topics of the Davos this year. I think a very important thing in business is cooperation. If we can unite, work together, if we work very closely, I think we can bring more hope to the people and we can build more trust between the people, countries and companies and partners," he said.

    Jane Sun, CEO of Ctrip

    "Tourism is a sunrise industry. Since I entered Ctrip, every year there are new comers, which, first of all, shows that tourism is booming." Sun told Sina.com in Davos. "We invested heavily in ABC. A refers to AI, B is big data, and C is cloud computing. As we continue to expand overseas, these three will be very good weapons for us. So we think those mean opportunity," she said.

★Hu Xiaoming, president of Aliyun

    "In 2018, people will see the development in various countries more closely connected with cloud computing. More manufacturing enterprises and financial institutions will start to use „cloud', and cloud computing will increase the efficiency of technology and finance," Hu told Xinhua in Davos.