1 . The concept of ownership comes so easily to humans that even preschoolers have got it. Robots, on the other hand, often struggle to grasp such abstract concepts. Now a well-mannered robot that can make it has been programmed.
“Teaching robots ownership-related etiquette (礼仪) is really, really worthwhile,” says Matthias Scheutz, a computer scientist at Tufts University. "We can't just send out robots who are unaware of who owns what... If I instruct a robot to ‘build a fence’, and it goes to the neighbor’s and starts ‘stealing’ boards, that's not what we have in mind.”
The new socially conscious robot can learn who owns what from clear statements as well as its own observations. The robot learns its code of conduct (行为准则) from direct orders and generalizing from specific examples. For instance, if the robot is told not to touch several objects that it knows belong to specific people, the robot will deduce that, as a general rule, it shouldn’t touch owned objects.
Artificial intelligence (AI) expert Xuan Tan and colleagues at Yale found out how the robot reacts in experiments with blocks on a table. In one session, Tan played with only the red blocks, leading the robot to infer that these blocks belonged to the same person. When Tan instructed the robot to throw away everything on the table and the machine reached for a red block, Tan stopped the robot, saying, “That's mine.” Now aware that it should not throw Tan’s belongings, and assuming that the rest of the red blocks belonged to Tan as well, the robot cleared the table of everything but red blocks.
Later, when Tan's colleague Jake Brawer directed the robot to throw out a red block, the robot replied, "Sorry, I'm forbidden to throw it away if it's owned by Tan.” Though robots may have more difficulty understanding who owns what in situations filled with far more objects of much wider variety than blocks on a table. Scheutz called it a good "first attempt” at equipping robots with an appreciation of ownership.
1. What does the second paragraph focus on?| A．The way of teaching robots ownership. | B．The basics of the human-robot relationship. |
| C．The benefit of robots learning ownership. | D．The importance of robots learning code of conduct. |
| A．Conclude. | B．Admit. | C．Agree. | D．Doubt. |
| A．To train the robot. | B．To predict the robot’s move. |
| C．To test the robot's behavior. | D．To study the preference. |
| A．The robot knows how to obey. | B．The robot can learn who owns what. |
| C．The robot follows no wrong orders. | D．The robot can solve complex situations. |
2 . A review of 100 years of fossil evidence reveals that 100 million years ago part of the Sahara Desert was arguably the riskiest place on our planet,wih a concentration of large predatory(食肉的）dinosaurs unmatched in any comparable modern ecosystem on land. The analysis of fossils from theso-called Kem Kem beds shows the presence in the area of large-scale predatory dinosaurs,reptiles and other hunters, all living together in what was at the time a river system full of very large fish, rather than a desert.
Paleontologist Nizar Ibrahim, lead author of the study, said that the Kem Kem ecosystem was a highly enigmatic place,ecologically speaking, since typically ecosystems present a larger number of plant-eating animals than predators, and predators themselves will come in a variety of sizes,with one larger predator being dominant. In the Kem Kem beds,fossils of predators outnumber those of plant-eating dinosaurs, and several of the predators living together in the area, such as the Carcharodontosaurus, the Spinosaurus,the Abelisaur and the Deltadromeus, were as big as a Tyrannosaurus rex (T.rex) - one of the largest dinosaurs that ever lived. This is strange “even by dinosaur standards,” according to Ibrahim, since the T. rex, which was present in North America tens of millions of years later, was “the unarguable ruler of its ancient ecosystem.”
It is unlikely that the large predators in the Kem Kem ecosystem ate one another. What's more realistic, according to Ibrahim, is that they ate the abundant and supersized fish present in the area - fish like coelacanths"the size of a car” and sawfish that could reach 25 feet in length.
The study of the Kem Kem beds carried out by Ibrahim and a group of international researchers across the U.S., Europe and Africa draws attention to the importance of learning more about Africa,which remains paleontology's forgotten continent.It shows that African ecosystems"do not simply copy the ones we know from North America,Europe or other better-known places,"and it also reveals clues about what happens to life when dramatic changes in climate come into play.
1. What does the underlined word “enigmatic" in Paragraph 2 probably mean?| A．Dangerous. |
| B．Peaceful. |
| C．Puzzling. |
| D．Remote. |
| A．The T.rex was the real ruler of the ecosystem. |
| B．There once lived dangerous supersized dinosaurs. |
| C．There was an underground river instead of a desert. |
| D．The number of plant-eating dinosaurs went beyond that of predators. |
| A．Sawfish once completely dominated North America. |
| B．Coelacanths were much larger than the Deltadromeus. |
| C．The Carcharodontosaurus and the Spinosaurus lived on fish. |
| D．The Abelisaur and the T. rex became extinct at the same time. |
| A．African ecosystems have their uniqueness. |
| B．Humans have caused great changes in climate. |
| C．Fossils of predators proved to be alien species. |
| D．The Sahara Desert was formed 100 million years ago. |
3 . "The firefighters of Paris told me they are very hopeful about saving the northern tower, " French Junior Interior Minister Laurent Nunez said on Twitter late Monday, adding that the firefighting efforts would continue for hours.
The Notre Dame Cathedral(巴黎圣母院)， one of the most famous landmarks in the French capital， was engulfed in flames Monday evening as a catastrophic fire tore through the historic structure， collapsing its spire as fire officials raced to save the monument from total destruction.
Video and photos posted on social media showed flames engulfing the cathedral, thus both the ceiling and the 90-meter spire came crashing down. The fire spread to one of the cathedral's towers, but French officials said late Monday that firefighters were optimistic they could save both towers.
French President Emmanuel Macron said a national fundraising campaign would be launched on Tuesday and called on the world's "greatest talents" to assist in the effort. "We will rebuild, Macron told reporters. "We will rebuild Notre Dame because this is what the French expect, because this is what our history deserves.
Officials said there were no deaths in the fire. Jean-Claude Gallet, chief of the Parisian fire department, said one firefighter was injured while responding to the flame. Two-thirds of the cathedral's roof was destroyed, Gal let said. The fire broke out just before p. m. minutes after the cathedral, which has been partly rebuilt, closed to the public. Around 30 000 people visit the church daily.
Despite its long history and many treasures the Cathedral needed the help of a writer to become truly famous. Victor Hugo's 1831 novel, The Hunchback of Notre-Dame, presented the building to a wide audience of readers. The book's ugly lead character, Quasimodo, serves as a symbol for Paris forgotten Gothic architecture. Hugo wrote the book to remind people of it, with hope they would work to protect the beautiful old buildings of Paris. The loss of cultural relics will never come again if they are lost only once. This is a painful loss of world civilization.
1. The following issues are wrongly stated in the text except________________.| A．the Notre Dame Cathedral was totally destroyed |
| B．firefighters were pessimistic because they couldn't save both towers |
| C．a national fundraising campaign would be launched to rebuild the cathedral |
| D．the Cathedral became truly famous for its long history and many treasures |
| A．Flooded. | B．Swallowed. |
| C．Disappeared. | D．Constructed. |
| A．A fire broke out in the Notre Dame Cathedral |
| B．The mystery of the Notre Dame Cathedral |
| C．A national fundraising campaign |
| D．The rebuilding of the Notre Dame Cathedral |
4 . 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. |
5 . Traveling with kids is 90 percent reminding yourself to live in the moment and 10 percent making up your mind to never again leave your house.
I have an uncanny ability to forget this as soon as we return home from a trip and I've finished washing piles of dirty clothes in our luggage and cleaning all the messy caused by the kids. Extremely tired and annoyed, I would actually begin to miss the place we just left!
Family travel is like childbirth, I suppose. Painful, loud, messy, sort of awful, actually, but also wonderful. And you remember only the wonderful—until you’re back on a plane and your kids are fighting over who gets the aisle seat. Then you remember the bad stuff.
Last weekend, my kids and I flew to Texas for a trip we would have nothing to complain(抱怨) about—big hotel, wonderful view.
And yet—we found things to complain about. The pool was bigger in that other hotel! Why do you get to shower first? They call this coffee?! Luckily, I’ve learned to put my metaphorical coat of armor (盔甲) on as soon as we land somewhere, and it forces complaints to bounce off me and land in a pile at my feet.
For three days, genuine fun was had and annoying complaints were heard and ignored. Until it was time to catch a plane and fly home.
Unfortunately, our flight was canceled. We spent hours finding a hotel room. We hit the hotel pool before bed and swam well into the night, my kids making up songs and laughing so hard at their silly lyrics (歌词) and their crazy good fortune to be swimming at 10: 30 on a school night.
And that was when it hit me that family travel is all those things I said before but it’s also a lot more. It’s taking your kids to parts of the world that will open their eyes and finding that actually, yours need opening too. It’s remembering that joy and memories are where you make them, not where you find them.
1. The underlined word “uncanny” in Paragraph 2 is closest in meaning to .| A．unknown. | B．uncertain. |
| C．unexpected. | D．unusual. |
| A．they both cause financial trouble and pain. |
| B．they are both hard as well as rewarding. |
| C．childhood memories come flooding back when they travel. |
| D．both of them need many preparations. |
| A．she tries to deal with the complaints more wisely and properly. |
| B．she turns those annoying complaints into a means to educate kids. |
| C．she has improved her language skills when handling the complaints. |
| D．she has succeeded in escaping kids’ fighting thanks to the armor. |
| A．family vacation benefits her kids as well as her. |
| B．joy and memories should be created rather than discovered. |
| C．the most unforgettable memory for her is about the complaints. |
| D．she has to spend some time on housework after the family vacation. |
6 . Sales of Apple’s new iPhone 11 in China began on Friday, but were met with a cooler welcome from customers than in previous years. Unlike in previous years, no long lines were seen outside Chinese shops on Friday for the new iPhone, and the product release (发布) only made the headlines in a few media.
Huawei released its Mate 30 smartphone series on Thursday night. Its new devices(设备) have won consumers’ hearts at home and abroad. Many compared it with Apple’s new iPhone 11, saying that beats the new iPhone because of innovation and quality. One customer named Zhao Kai, an IT specialist who pre-ordered a Mate 30 Pro on Friday, said that he chose Mate 30 without hesitation. Zhao said, “It’s clear that Huawei’s new phone with its advanced 5G mode would lead the future global telecommunications market, too.”
In contrast with iPhone 11’s poor sales, Chinese netizens (网民) have joined in discussions on Mate 30 and iPhone 11. An online poll on the Mate 30 and iPhone 11 on Weibo on Friday showed that more than 60 percent of netizens chose the Mate 30, while less than 20 percent chose the iPhone 11. Many chose Huawei as a result of its technology.
Overseas customers also joined in the heated discussions on Huawei’s new flagship devices on sites. On Twitter, many netizens said “nice”, “best phone ever” and “my favorite one” on Huawei’s Twitter account. Some netizens in countries like the UK, the Netherlands and Argentina asked when Huawei’s new devices would be released in their countries.
1. How did customers react to Apple’s new product?| A．They thought it was cool to use it. |
| B．They stood in long lines to purchase it. |
| C．They thought its quality was worse than before. |
| D．They were less interested in it than former years. |
| A．The price and the weight. | B．The appearance and the speed. |
| C．The quality and innovation. | D．The service life and function. |
| A．Store. | B．Survey. | C．Market. | D．Exam. |
| A．New Technology - 5G | B．Huawei Is Better than Apple |
| C．Apple’s New iPhone 11 | D．Huawei’s Mate 30 Defeats iPhone 11 |
7 . From dogs and cats to pandas and penguins, lists of adorable animals can be very varied. However, when it comes to scary animals, the answers are often more or less the same-snakes and spiders are among the most dreadful ones for the majority of us.
However, most of us have never been bitten by a snake or a spider. So does this mean we are born with a fear of certain things?
Scientists have been actively looking into it for a long time. For example, studies have suggested that babies find live animals much more interesting than stuffed （毛绒填充的） ones. This interest continues even if those animals are snakes and spiders.
A study published in Psychological Science in 2008seemed to show that snakes did have a different impact on babies. When scientists presented babies with animal videos along with random sounds of happy or frightened human voices, hey found that babies looked at snakes for longer than any other animal however the voices sounded.
Now, a team from Rutgers University in New Jersey, US has tried to challenge the idea that babies are born with a fear of snakes and spiders. According to the BBC, the researchers measured babies' physiological （生理的） responses as they watched videos of snakes and elephants paired with both fearful and happy voices.
Scientists then set out to surprise the babies to see how they would react. They presented them with an unexpected bright flash of light as they watched a video. As the BBC explained, a surprise like this would be more intense （强烈的） if the babies were already scared, just like when we watch scary films and jump more if we are already scared.
However, according to their findings, published recently in the Journal of Experimental Child Psychology, babies 'surprised responses were not bigger when watching a video of a snake, even when it was shown with a fearful voice. Their heart response was also lower, which also made it seem that babies were not scared.
"Children do not have an innate fear of snakes,"concluded the study. Even if previous studies had suggested that babies have different responses to snakes, it isn't necessarily related to fear."It's possible that paying more attention to something might make fear learning easier later on. It leads to fear learning,"said research co-author Vanessa LoBue. She further explained that it was a good thing that humans didn't have an inborn fear of snakes because it would make a young infant's desire to explore new things less strong.
Instead, we have evolved to quickly learn to be afraid of something if it turns out to be dangerous.
1. What is the article mainly about?___| A．Whether humans are born with a fear of snakes and spiders. |
| B．How people's fear of snakes and spiders has evolved. |
| C．How babies react differently from adults to snakes and spiders. |
| D．Why snakes and spiders are considered the most dreadful animals. |
| A．The longer babies looked at snakes in the video, the less scared they were. |
| B．Babies took more interest in snakes than the other animals in the videos regardless of which human voices they heard. |
| C．Babies' responses to the snake in the videos were greatly affected by the types of voices they heard. |
| D．The fearful voices babies heard when watching snake videos doubled their fear of snakes. |
| A．A fearful voice didn't make their surprised response become more intense. |
| B．They became more scared when they experienced an unexpected bright flash of light. |
| C．Babies 'heart responses changed slightly when they heard a fearful voice. |
| D．They paid more attention to the snakes when they heard a fearful voice. |
| A．immediate | B．lasting |
| C．from birth | D．from learning |
True friends are people who like us though we made mistakes and who listen to us and tell us the truth. Friends support our decisions and tell us when we’re foolish. They laugh with us and share our sadness. They are our partners and share interests with us. They stimulate us when we are feeling down. They are people we aren’t afraid of telling our secret wishes to or what is really on our minds.
Friends are our supporters. When you can depend on friends, you feel safe and warm. Friends offer acceptance and emotional(情感的)support. At times, they also help with our everyday lives, cooking a meal, doing chores, or giving us a lift when we need one. Friends also are there to offer advice, an ear to listen, or a shoulder to cry on.
Friends also help us reduce stress. Not only do they listen to us when we feel stressed, but they also discuss what is stressing us. Sharing interests and doing activities with friends help us forget about problems at work or at home. For a short time, we can lose ourselves in a pleasant activity and perhaps laugh and breathe more easily.
1. What is the best title for the passage?
| A．How to Reduce Stress |
| B．How to Make New Friends |
| C．The Importance of Friends |
| D．The Qualities of Good Friends |
| A．educate | B．encourage |
| C．surprise | D．dislike |
| A．laugh at us when we’re foolish |
| B．tell us other people’s secrets |
| C．share our sadness and interests |
| D．support us when we need help |
| A．people should make friends anytime |
| B．friends are people who allow you to cry |
| C．a friend helps you in many ways |
| D．good friends are always difficult to meet |
