1 . 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.
1. What does the phrase “death valley” in Paragraph 2 refer to?| A．A place where cars often break down. | B．A case where passing a law is impossible. |
| C．An area where no driving is permitted. | D．A situation where drivers’ role is not clear. |
| A．stop people from breaking traffic rules. | B．help promote fully automatic driving. |
| C．protect drivers of all ages and races. | D．prevent serious property damage. |
| A．It should get the attention of insurance companies. |
| B．It should be the main concern of law makers. |
| C．It should not cause deadly traffic accidents. |
| D．It should involve no human responsibility. |
| A．Singapore | B．the UK | C．the US | D．Germany |
2 . According to a recent study in the Journal of Consumer Research, both the size and consumption habits of our eating companions can influence our food intake. And contrary to existing research that says you should avoid eating with heavier people who order large portions(份), it's the beanpoles with big appetites you really need to avoid.
To test the effect of social influence on eating habits, the researchers conducted two experiments. In the first, 95 undergraduate women were individually invited into a lab to ostensibly(表面上)participate in a study about movie viewership. Before the film began, each woman was asked to help herself to a snack. An actor hired by the researchers grabbed her food first. In her natural state, the actor weighed 105 pounds. But in half the cases she wore a specially designed fat suit which increased her weight to 180 pounds.
Both the fat and thin versions of the actor took a large amount of food. The participants followed suit, taking more food than they normally would have. However, they took significantly more when the actor was thin.
For the second test, in one case the thin actor took two pieces of candy from the snack bowls. In the other case, she took 30 pieces. The results were similar to the first test: the participants followed suit but took significantly more candy when the thin actor took 30 pieces.
The tests show that the social environment is extremely influential when we're making decisions. If this fellow participant is going to eat more, so will I. Call it the “I’ll have what she's having” effect. However, we'll adjust the influence. If an overweight person is having a large portion, I'll hold back a bit because I see the results of his eating habits. But if a thin person eats a lot, I'll follow suit. If he can eat much and keep slim, why can't I?
1. What is the recent study mainly about?| A．Food safety. | B．Movie viewership. |
| C．Consumer demand. | D．Eating behavior. |
| A．Big eaters. | B．Overweight persons. |
| C．Picky eaters. | D．Tall thin persons. |
| A．To see how she would affect the participants. |
| B．To test if the participants could recognize her. |
| C．To find out what she would do in the two tests. |
| D．To study why she could keep her weight down. |
| A．How hungry we are. | B．How slim we want to be. |
| C．How we perceive others. | D．How we feel about the food. |
3 . In 2009, Dan Black was hit by a car in his hometown of Chepstow, Wales, as he was biking to his job at a grocery store. The accident left him unable to move from the chest down. During his recovery, he suffered a stroke that made his right arm useless. Once a promising guitarist, Dan, now 25, lives with his parents and requires around-the-clock care that costs nearly $ 300,000 a year. After the accident, a friend of his started the Help Dan Black Fund to cover some of Dan’s medical expenses. Dan learned about an experimental stem cell(干细胞) treatment in China that could enable him to walk again. After four years, donations to help Dan Black totaled nearly $ 30,000.
One day, in 2013, a news story caught the eye of Dan’s mother, Michacla, who then shared the story with her son. The story featured a five-year-old boy named Brecon Vaughan. He had a rare form of disease and never walked by himself. The boy’s family had created a website with which to raise nearly $ 100,000 needed for a trip to the St. Louis Children’s Hospital, where treatment was offered that could help Brecon walk. Only half the amount had been raised, said the report.
Dan deliberated. Then, after considering that his own dream of walking could be years away, he donated his $30,000 to Brecon’s cause. “I know how it feels to walk. Brecon doesn’t. He needs it much more than I do.” Dan told a newspaper.
Dan’s generosity received a great deal of attention, and contributions started pouring in to the Vaughan website. The family soon exceeded their fund-raising goal. They’ve promised to give the extra funds, about $17,000, to the Tree of Hope charity, which helps sick children in the United Kingdom find specialized medical help. In October, Brecon and his family travelled to St. Louis to begin treatment. “What Dan did is great.” Brecon’s mother said, “It is an extraordinary gift.”
1. What do we know about Dan Black?| A．He promised to be a guitarist. |
| B．He donated his money from his need. |
| C．He created a website to collect money. |
| D．He lost his right arm in an accident. |
| A．Achieved. | B．Brought up. |
| C．Went beyond. | D．Set. |
| A．Dan Black’s example. | B．Brecon’s story |
| C．Michaela’s suggestion. | D．The Vaughans’promise |
| A．Support Dan Black’s treatment. | B．Fund Brecon’s trip to St. Louis. |
| C．Help sick children in the UK. | D．Give away to the Tree of Hope charity. |
4 . Vinegar makes salad，fries and dumplings taste better， and you can even use it to clean your windows． And now， according to scientists， it may even the planet's population survive climate change．
Researchers from the RIKEN Center for Sustainable Resource Science （CSRS） in Japan found that growing plants in vinegar makes them more resistant to droughts． This could mean that in the future， worries about climate change affecting the world's supply of food will be much lower． The discovery was made after the researchers studied the Arabidopsis， a plant known for its ability to survive in dry weather． It was found that when the plant was placed in drought﹣like conditions， it produced a chemical called acetate（醋酸盐）﹣the main component of vinegar．
After discovering this， the scientists experimented further by adding acetate to the soil of other plants， before they stopped giving them water completely． After leaving the plants for 14days， they found that the ones treated with acetate had survived， while the untreated plants had dried up and died．
It's hoped that this simple method of survival could soon be used to help farmers in dry countries keep their crops alive． "In the experiment， we targeted the staple foods of the world﹣rice， wheat and maize﹣and the basic plant of breeding species， rapeseed（油菜籽），" Jong Myong Kim， co﹣author of the study， told Popular Science magazine．
Kim also told the magazine he's already been in touch with people all over the world who are interested in trying this simple and cost﹣effective method out for themselves from flower growing companies to amateur gardeners． Although at this point keeping thirsty plants alive isn't as easy as just pouring vinegar over them， Kim said he and his team are working on making the process as simple as possible． "Now we are trying to cooperate with some farmers， and also some companies， to make a method to apply this system， "he said． And for those of us who always forget to ask our neighbors to water our plants when we goaway， hopefully this means the end of returning home from a trip to find our favorite flowers have died．
1. What is the article mainly about？| A．The world's food supply will be increased． |
| B．Plants better survive droughts． |
| C．The Arabidopsis is resistant to droughts． |
| D．Vinegar could be used to fight droughts． |
| A．be used by farmers to replace soil |
| B．only be produced by the Arabidopsis |
| C．help plants survive dry conditions |
| D．be used to improve poor soil |
| A．all breeding species． |
| B．wheat and Arabidopisis． |
| C．rice and maize． |
| D．rapeseed and Arabidopisis． |
| A．can make people's trips pleasant |
| B．turned out a worldwide success |
| C．is as simple as pouring vinegar over the plants |
| D．appeals to many flower growing companies |
