Some people surveyed tasted the sweet, salty and crunchy together with other tastes of food as they listen to different noises.It shows that louder noises reduced the reported sweetness or saltiness of food while incr eatasing the measure of crunchiness（松脆）.

    It may go some way to explain Why airline food is widely complained about by both the workers and paddengers.Andy Woods,a researcher,said,“It's a general opinion that plane foods aren't fantastic,but I'm sure airlines do their best,so we wondered if there were other reasons,One thought was that perhaps the background noise may have an effect.NASA gives their space explorers very strong -tassting foods,because for some reason,they can't taste food that Strongly-^again, it may have something ti do with the background noise.”

    In a study ,48 people were fed sweet foods or salty ones, while listening tonoting or noise through earphone. Meanwhile they rated(划分等级) the foods. In noisier settings,foods were rated less or sweet than they were when it was silent,but were rated crunchier.“The evidence shows that if the background noise is loud, your food, attention might be drawn to that, away from the food.” Dr. Woods said.

    “We ae still at an early stage of progressing and this is a rather small  study to really draw definitive(最完整可靠的）conclusions from,” Dr. Woods said,“but they suggest that restaurants could well their choice of food for a given environment.”

    Also in the group's findings there is the suggestion that the overall satisfaction with the food is also related to the degree to which people like what they are hearing .

    At exactly eleven Sir Percival knocked and entered, with anxiety and worry in every line of his face. This meeting would decide his future life，and he obviously knew it.

    "You may wonder, Sir Percival,”said Laura calmly, “if I am going to ask to be released (免除）from my promise to many you. I am not going to ask this. I respect my father's wishes too much.”

    His face relaxed a little, but one of his feet kept beating the carpet.

    "No, if we are going to withdraw. (退出）from our planned marriage, it will be because of your wish, not mine.

     “Mine?” he said in great surprise. “What reason could I have for withdrawing?^'

    "A reason that is very hard to tell you," she answered. "There is a change in me.”

    His face went so pale that even his lips lost their color. He turned his head to one side.

    "What change?" he asked, trying to appear calm.

     “When the promise was made two years ago,” she said, ⁴⁴ my love did not belong to anyone. Will you forgive me, Sir Percival, if I tell you that it now belongs to another person?”

    “I wish you to understand, “Laura continued, “that I will never see this person again, and that if you leave me, you only allow mc to remain a single woman for the rest of my life. All I ask is that you forgive mc and keep my secret."

    ‘I will do both those things, “he said. Then he looked at Laura, as if he was waiting to hear more.

    "I think I have said enough to give you reason to withdraw from our marriage, “she added quietly.

    “No. You have said enough to make it the dearest wish of my life to marry you, ” he said.

    One day, Mr. Arnold was teaching a lesson, and things were going as normally as ever. He was explaining the story of human being to his pupils. He told them that, in the beginning, men were nomads (游牧); they never stayed in the same place for very long. Instead, they would travel about, here and there, in search of food, wherever it was to be found. And when the food ran out, they would move off somewhere else.

    He taught them about the invention of farming and keeping animals. This was an important discovery, because by learning to cultivate (耕作) the land, and care for animals, mankind would always have food steadily. It also meant that people could remain living in one place, and this made it easier to set about tasks that would take a long while to finish, like building towns, cities, and all that were in them. All the children were listening attracted by this story, until Lucy jumped up:

    “And if that was so important and improved everything so much, why are we nomads all over again, Mr. Arnold?”

    Mr. Arnold didn't know what to say. Lucy was a very clever girl. He knew that she lived with her parents in a house, so she must know that her family were not nomads; so what did she mean?

    “We have all become nomads again,” continued Lucy, “The other day, outside the city, they were cutting the forest down. A while ago a fisherman told me how they fish. It's the same with everyone: when there's no more forest left the foresters go elsewhere, and when the fish run out the fishermen move on. That's what the nomads did, isn't it?

    The teacher nodded, thoughtfully. Really, Lucy was right. Mankind had turned into nomads. Instead of looking after the land in a way that we could be sure it would keep supplying our needs, we kept developing it until the land was bare. And then off we would go to the next place! The class spent the rest of the afternoon talking about what they could do to show how to be more civilized (文明的).

    The next day everyone attended class wearing a green T-shirt, with a message that said “I am not a nomad!”

    And, from then on, they set about showing that indeed they were not. Every time they knew they needed something, they made sure that they would get it using care and control. If they needed wood or paper, they would make sure that they got the recycled kind. They ordered their fish from fish farms, making sure that the fish they received were not too young and too small. They only used animals that were well cared for, and brought up on farms.

    And so, from their little town, those children managed to give up being nomads again, just as prehistoric men had done, so many thousands of years ago.

    A young woman carrying a three-year-old child got on a bus. The conductor hurried to give her a warm welcome and then kindly asked the other passengers to make more room for the woman and her kid. On seeing this, people were surprised and began to talk." You know this conductor used to be very rude. Now suddenly he has changed his bad behavior, "said a middle-aged man.

    "Yes, he should be praised and we must write a letter to the company," said a second passenger." That's right," another lady said, "I wish a newspaper reporter were here so that more people could learn from this conductor."

    Just then a gentleman who looked like a teacher turned to the conductor and said, "Excuse me, but can I know your name, please? Your excellent service must be praised…"

    Before he could open his mouth, the three-year-old kid sitting on the young woman's lap interrupted, "I know his name; I call him Dad."

    A disastrous fire surrounded Notre Dame(巴黎圣母院)completely and destroyed large parts of the Gothic(哥特式的) architecture on Monday.

    "Notre Dame is our history, our literature; part of our spirit, the place of all our great events, our wars, our liberations, the center of our lives" French President Emmanuel Macron told reporters in front of the still burning Paris landmark and promised to rebuild Notre Dame Cathedral.

    "Notre Dame is burning, and know the sadness and this tremble felt by so many fellow French people. But tonight, I'd like to speak of hope too, "he said, announcing the launch of a fundraising campaign.

    "Let's be proud, because we built this cathedral more than 800 years ago, we've built it and, throughout the centuries, let it grow and improve it. So I gravely say tonight: we will rebuild it together, "he added.

    The disastrous fire engulfed(吞没) the upper reaches of Paris' towering Notre Dame Cathedral as it was undergoing renovations(翻新).

    Tourists and Parisians looked on horrified from the streets below. France's Interior Ministry said firefighters might not be able to save the structure.

    The fire collapsed the cathedrals' spire(尖顶) and spread to one of its landmark towers "Everything is burning; nothing will remain from the frame, "Notre Dame spokesman Andre Finot told French media. The 12th-century cathedral is home to incalculable works of art and is one of the world's most famous tourist attractions, immortalized by Victor Hugo's 1831 novel The Hunchback of Notre Dame.

    The cause of the fire was not known, but French media quoted the Paris fire brigade(消防队) as saying the fire is "potentially linked" to a 6 million—euro($6. 88 million)renovation project on the church's spire and its 250 tons of lead. Officials opened an investigation as Paris police said there were no reported deaths. Some 400 firefighters were battling the fire well into the night.

    As Artificial Intelligence(AI) becomes increasingly sophisticated(复杂的), there are growing concerns that robots could become a threat. This danger can be avoided, according to computer science Professor Stuart Russell, if we figure out how to turn human values into a programmable code.

    Russell argues that as robots take on more complicated tasks, it's necessary to translate our morals into AI language.

    For example, if a robot does chores around the house, you wouldn't want it to put the pet cat in the oven to make dinner for the hungry children. "You would want that robot preloaded with a good set of values," said Russell.

    Some robots are already programmed with basic human values. For example, mobile robots have been programmed to keep a comfortable distance from humans. Obviously there are cultural differences, but if you were talking to another person and they came up close in your personal space, you wouldn't think that's the kind of thing a properly brought-up person would do.

    It will be possible to create more sophisticated moral machines, if only we can find a way to set out human values as clear rules.

    Robots could also learn values from drawing patterns from large sets of data on human behaviour. They are dangerous only if programmers are careless.

    The biggest concern with robots going against human values is that human beings fail to so sufficient testing and they've produced a system that will break some kind of taboos(禁忌).

    One simple check would be to program a robot to check the correct course of action with a human when presented with an unusual situation.

    If the robot is unsure whether an animal is suitable for the microwave, it has the opportunity to stop, send out beeps(嘟嘟声), and ask for directions from a human. If we humans aren't quite sure about a decision, we go and ask somebody else.

    The most difficult step in programming values will be deciding exactly what we believe in moral, and how to create a set of ethical rules. But if we come up with an answer, robots could be good for humanity.