The butterfly effect is a common idea in science fiction today. But its roots are in real science.
In 1972, a meteorologist (气象学家)
Many people now use it
Of course you don’t have to use time travel to see the butterfly effect. Just think
What about recycling a plastic bottle? Or planting a tree? You may not be able to predict the effect these small actions can have. A small change today can have an unpredictable
2 . Bill Gates was born in 1955. He grew up in Seattle, Washington. When he was young, he was good at science and maths. And he wanted to be a scientist.
Bill started to play with computers when he was 13. At that time, computers were very large machines. Once he was interested in a very old computer. He and some of his friends spent lots of time doing unusual things with it. In the end, they worked out a software program with the old machine. Bill sold it for 4,200 dollars when he was only 17.
In 1973, Bill went to Harvard University. He developed the Basic Language for the first microcomputer. In his third year, he left Harvard. Bill began his company in 1975 with his friend Paul Allen. They thought that the computer would be a very important tool in every office and in every home, so they began developing software for personal computers. They developed the software to make it easier for people to use computers.
In 1999, Bill wrote a book. In the book, he told people how computer technology could solve business problems in new ways. It was one of the best-sellers on The New York Times’ list. Bill Gates has many hobbies. He enjoyed reading very much. He also enjoys playing golf and bridge.
1. When did Bill begin to play with computers?| A．In 1968. | B．In 1966. |
| C．In 1965. | D．In 1972. |
| A．17 years old. | B．18 years old. |
| C．19 years old. | D．20 years old. |
| A．how to do unusual things |
| B．how to play computer games |
| C．how to work out a software program |
| D．how to solve business problems with the help of computers in new ways |
| A．Bill Gates developed the Basic Language for the first microcomputer. |
| B．Bill Gates enjoys playing computer games. |
| C．Bill Gates wrote many science books. |
| D．Bill Gates books are on the top of best-sellers. |
A Blessing From A Homeless Person
On the way back from work every evening, more often than not, there would be a homeless man standing at the exit of the freeway. He seemed to be in his late 40s, but was probably a little younger. Although wearing ill-fitting clothes and a mismatched pair of shoes, he seemed neither scruffy nor gloomy. With a huge grin highlighting his face, he always waved at every car and sometimes almost danced, which made the thick moustache appear “stylish” and even adorable.
Every day after work I would remember to gather any spare change, and put it aside to give him if I saw him. A feeling of joy would come over me every time I caught sight of him while coming down the ramp. He did have that effect. I’d quickly roll down my window and give him the coins. Occasionally the red light would be on for a minute and we would ask each other about our day. His answer would always be the same— “I’m blessed!” I knew what his answer was going to be every time, yet I would still ask just as if his words could work their magic on me. It amazed me that even in his situation of being homeless he was so positive, and his answer would always remind me how blessed I was: a single mother of four amazing kids, with a place to call home and a job to provide for my family.
One day I was called into my boss’s office and informed that I was being laid off due to the depressing economy. This came as a nasty shock for a single mother whose big family survived on this salary. A feeling of helplessness and grief engulfed me, then followed by endless worry. For the rest of that day, all I could think of was “How am I going to provide for my kids? How am I going to pay rent? And what am I going to do?”
注意：1.续写词数应为 150 左右;
2.请按如下格式在答题卡的相应位置作答。
Needless to say, I was very sad and upset on my way home that day.
_____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________You see that day he gave me more than a dollar bill; he taught me a valuable lesson.
_____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________4 . Tired of standing in line? Wait a bit longer, and you may never have to again.
Amazon has opened 24 of its Amazon Go stores, which use cameras and artificial intelligence (AI) to see what you’ve taken off shelves and charge you as you walk out. Some companies are closely copying Amazon’s approach to using Al-powered cameras fixed in ceilings. But others are trying an entirely different way to skip the checkout: smart shopping carts, companies have added cameras and sensors to the carts, and are using AI to tell what you’ve put in them. Customers pay by entering a credit card, or through an online payment system. When a customer exits the store, a green light on the shopping cart shows that their order is complete, and they’re charged.
The companies behind the smart carts, including Caper and Veeve, say it’s much easier to add technology to the shopping cart than to an entire store. Amazom’s Go stores rely on hundreds of cameras in the ceiling. The shelves also include sensors to tell when an item is removed. Ahmed Beshry, co-founder of Caper, believes the technology to run Go is too expensive to use in a large-format grocery store. Neither Caper nor Veeve have said how much their smart shopping carts will cost, making it difficult to compare the different formats. Shariq Siddiqui, CEO of Veeve, said, “We’re always happy when Amazon is doing something. They force retailers to get out of their old school thinking.”
Each time a business uses artificial intelligence and cameras, it raises questions about customers’ privacy and the effect on jobs. Beshry notes that the cameras in his shopping cart point down into the cart, so only a customer’s hand and part of their arm will be captured (拍摄) on camera.
1. What do we know about the smart shopping carts?| A．They are linked to the cameras fixed in the ceilings. |
| B．They are not able to recognize goods put in them. |
| C．They flash the green light when the order is finished. |
| D．They can tell customers where to find what they want. |
| A．It may reduce the cost of running a store greatly. |
| B．It is likely to help retailers to think differently. |
| C．It has attracted many more retailers than before. |
| D．It costs much more than their shopping carts. |
| A．That goods in the stores may be more expensive. |
| B．That they can only buy goods online. |
| C．That somebody may know their privacy. |
| D．That they have to wait in a line for a longer time. |
| A．The new technology improves retail sale. |
| B．Smart shopping carts will let you skip the line. |
| C．Al-powered cameras are used in retail stores. |
| D．Artificial intelligence affects the future of job market. |
1. 你的理想职业；
2. 选择它的理由；
3. 实现的途径。
注意：
1. 词数80左右；
2. 可根据内容要点适当发挥，以使行文连贯。
My Dream Career
___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________A Little Boy
A little boy selling magazines for school walked up to a house that people rarely visited. The house was very old and shabby and the owner hardly ever came out. When he did come out, he would not say hello to his neighbors or passers-by but simply just glared at them.
The boy knocked on the door and waited, sweating from fear of the old man. The boy’s parents told him to stay away from the house, and a lot of other neighborhood children were told the same thing from their parents.
Dusk found the boy lingering on and hesitating what to do. As he was ready to walk away, the door slowly opened. “What do you want?” the old man said impatiently. The little boy was very afraid but he had a quota (定额) to meet for school with selling the magazines. So he got up the courage and said, “Uh, Sir, I am selling these magazines and, uh, I was wondering if you would like to buy one from me.”
The old man just stared at the boy without a word. The boy could see inside the old man’s house and saw that he had dog figurines (小雕像) on the fireplace mantle. “Do you collect dogs?” The little boy asked. “Yes, I have many collections in my house. They are my family here and they are all I have.” The boy then felt sorry for the man, as it seemed that he was a very lonely soul.
“Well, I do have a magazine here for collectors. It is perfect for you. I also have one about dogs since you like dogs so much.” The old man was ready to close the door on the boy and said, “No, boy. I don’t need any magazines of any kind, now goodbye.”
The little boy was sad that he was not going to make his quota with the sale. He was also sad for the old man being so alone in the house that he owned. The boy went home and then had an idea. He had a little dog figurine that he got some years ago from an aunt. The figurine did not mean nearly as much to him since he had a real live dog and a large family.
注意:1. 续写词数应为150左右；
2. 请按如下格式作答。
The little boy headed back down to the old man’s house.
___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________From that day on something changed inside the old man.
___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________7 . Running is often tiring and a lot of hard work, but nothing beats the feeling you get after finishing a long workout around the track.
But while it’s long been believed that endorphins (内啡肽) —chemicals in the body that cause happiness—are behind the so-called “runner’s high”, a study suggested that there may be more to this phenomenon than we previously knew.
According to a recent study published by a group of scientists from several German universities, a group of chemicals called endocannabinoids (内源性大麻素) may actually be responsible for this familiar great feeling.
To test this theory, the scientists turned to mice. Both mice and humans release high levels of endorphins and endocannabinoids after exercise. After exercising on running wheels, the mice seemed happy and relaxed and displayed no signs of anxiety. But after being given a drug to block their endorphins, the mice’s behavior didn’t seem to change. However, when their endocannabinoids were blocked with a different drug, their runners’ high symptoms seemed to fade.
“The long-held notion of endorphins being responsible for the runner’s high is false. Endorphins are effective pain relievers, but only when it comes to the pain in your body and muscles you feel after working out,” Patrick Lucas Austin wrote on science blog Lifchacker.
Similar studies are yet to be carried out on humans, but it’s already known that exercise is a highly effective way to get rid of stress or anxiety. The UK’s National Health Service even prescribes (开药 方) exercise to patients who are suffering from depression. “Being depressed can leave you feeling low in energy, which might put you off being more active. Regular exercise can improve your mood if you have depression, and its especially useful for people with mild to moderate (中等的) depression,” it wrote on its website.
It seems like nothing can beat that feeling we get after a good workout, even if we don’t fully understand where it comes from. At least if we’re feeling down, we know that all we have to do is to put on our running shoes.
1. What did scientists from German universities recently discover?| A．Working out is a highly effective way to treat depression. |
| B．The runner’s high could be caused by endocannabinoids. |
| C．Endorphins may contribute to one’s high spirits after running. |
| D．The level of endorphins and endocannabinoids could affect one’s mood. |
| A．To find what reduces the runner’s high symptoms. |
| B．To see the specific symptoms of the runner’s high. |
| C．To identify what is responsible for the runner’s high. |
| D．To test what influences the level of endocannabinoids released. |
| A．Effect. | B．Goal. | C．Opinion. | D．Question |
| A．They can help ease depression symptoms. |
| B．They are the best way to treat depression. |
| C．They only work for those with serious depression. |
| D．They can help people completely recover from depression. |
When Jane Austen wrote her novels in England, she was writing about a world most of us wouldn’t recognise. But today Austen’s books are in greater demand than ever. In the last 10 years, five of her six novels
Richard Jenkyns,
The
All of Austen’s books,
9 . Have you ever imagined that your simple T-shirt could cool you down by up to 5℃ on these hot summer days? Thanks to a recent discovery, the possibility is getting closer. While there are many alternatives that manage to keep the body warm, this amazing invention aims to offer real relief for those who are eager to feel comfortable and fresh in the outdoors on extremely hot days.
Its inventors, engineers Ma Yaoguang of Zhejiang University and Tao Guangming of Huazhong University of Science and Technology in China, took a completely innovative approach. They designed a special textile (纺织物) that can absorb body heat and reemit (重发出) its energy into space as mid-infrared radiation (MIR). This textile cools both the objects and their surroundings through a technique that is known as radiative cooling. Science reveals. This means that even when it looks like you are wearing a regular shirt, you are actually wearing a device that works like a mirror.
Research conducted at Stanford University in 2017 had already managed to cool the wearer by 3℃, but this previous trial was limited. So researchers still need to test the new approach to determine how effectively the new fabric cools while the wearers are standing or walking, and not directly facing the sky, like in their trials. They also need to examine and measure how well it works when T-shirts are no in close contact with the skin.
Inventors Yaoguang and Guangming are now looking out for textile manufacturers and clothing brands that are interested in using their fabric. They estimate that the new material will increase clothing manufacturing costs by just 10 percent. “We can make it with mass production, which means everybody can get a T-shirt and the cost is basically the same as their old stuff,” Yaoguang said.
So if you are an athlete or simply someone that has to deal with the extremely high temperatures, be patient because your days of feeling hot and bothered may be coming to an end!
1. What is the purpose of the new invention?| A．To keep people warm. | B．To help beat the heat in hot weather. |
| C．To find out the wearers’ temperature. | D．To protect clothes from becoming wet. |
| A．By sending out absorbed heat. | B．By turning sunlight into energy. |
| C．By keeping heat out completely. | D．By using light colors to reflect sunlight. |
| A．The invention needs further testing. | B．The studies in 2017 lack evidence. |
| C．The new textile has a good cooling effect. | D．The new textile applies to various situations. |
| A．Doubtful. | B．Objective. | C．Supportive. | D．Indifferent. |
10 . Dark Sky Parks Around the World
Warrumbungle National Park
Situated in the central west slopes of New South Wales is Australia’s only dark sky park, Warrumbungle. The park has served as a dark sky park since July 2016. Its crystal-clear night skies and high altitude (海拔) make it a natural, educational and astronomical heritage site in the southern half of the earth. Tourists can use Australia’s largest optical telescope within the park boundaries to view the auroras (极光), the Milky Way and faint shooting stars.
Sark
Sark is a Channel Island near the coast of Normandy under the protection of the UK. It was the World’s First Dark Sky Island set up in January 2011. Its historical and cultural blend (交融) attracts over 40,000 tourists annually. With no motor vehicles and public lighting on the island, there is an exceptional view of the dark skies. A rich Milky Way is visible in the dark night skies from the shores of the island.
Pic du Midi de Bigorre
Pic du Midi de Bigorre in France was designated as a dark sky park in December 2013 making it the second largest dark sky park in the world. The park covers 3,112 square kilometres spread across the Pyrenees National Park and UNESCO’s World Heritage site, Pyrenees-Mont Perdu. The park attracts over one hundred star watchers every year. The Observatory Midi-Pyrenees, which was built in 1870,is one of the world’s highest museums at a height of 2,877 metres above sea level.
Ramon Crater/Makhtesh Ramon
Ramon Crater is a unique1,100-square-kilometre nature reserve located in the Negev Desert in Israel. In 2017, Ramon Crater became the first designated dark sky park in the Middle East. Its location, rough climate and forbidding landscape that are characteristic of the Negev have largely defeated historical attempts for human settlement, making it a great place to view the night skies. Stargazers usually camp in the desert to have an uninterrupted view of the stars, planets and the Milky Way.
1. Which was the first to be designated as a dark sky park?| A．Sark. | B．Pic du Midi de Bigorre. |
| C．Warrumbungle National Park. | D．Ramon Crater / Makhtesh Ramon. |
| A．The auroras. | B．The planets. |
| C．The Milky Way. | D．Shooting stars. |
| A．It’s a natural heritage site. | B．It covers 3,112 square kilometres. |
| C．Its geographical conditions are tough. | D．It’s a great place for humans to settle in. |
