1 . One day, gardeners might not just hear the buzz of bees among their flowers, but the whirr of robots, too. Scientists have managed to turn an unassuming drone (无人机) into a remote-controlled pollinator (授粉媒介) by attaching horsehairs coated with a special, sticky gel to its underbelly.
Animal pollinators are needed for the reproduction of 90% of flowering plants and one third of human food crops. Chief among those are bees — but many bee populations in the United States have been in steep decline in recent decades. Thus, the decline of bees isn't just worrisome because it could disrupt ecosystems, but also because it could disrupt agriculture and economy. People have been trying to come up with replacement techniques, but none of them are especially effective yet.
Scientists have thought about using drones, but they haven't figured out how to make free-flying robot insects that can rely on their own power source without being attached to a wire. “It’s very tough work,” said senior author Eijiro Miyako, a chemist at the National Institute of Advanced Industrial Science and Technology. His particular contribution to the field involves a gel, one he’d considered a mistake 10 years before and stuck in a storage cabinet. When it was rediscovered a decade later, it hadn’t dried up or degraded at all. “I was so surprised because it still had high viscosity,” Miyako said.
The chemist noticed that when dropped, the gel absorbed an impressive amount of dust from the floor. Miyako realized this material could be very useful for picking up pollen (花粉). He and his colleagues chose a drone and attached horsehairs to its smooth surface to mimic a bee’s fuzzy body. They coated those horsehairs in the gel, and then controlled the drones over lilies, where they would pick up the pollen from one flower and then deposit the pollen at another one, thus fertilizing it.
The scientists looked at the hairs under a scanning electron microscope and counted up the pollen grains attached to the surface and found that the drones whose horsehairs had been coated with the gel had about 10 times more pollen than those that had not been coated with the gel.
Miyako does not think such drones would replace bees altogether, but could simply help bees with their pollinating duties. There’s a lot of work to be done before that's a reality, however. Small drones will need to become more controllable and energy efficient, as well as smarter, with better GPS and artificial intelligence.
1. What does the underlined word “viscosity” in Para.3 probably mean?| A．Hardness. | B．Stickiness. |
| C．Flexibility. | D．Purity. |
| A．bees disrupt both agriculture and economy |
| B．scientists have invented self-powered robot insects |
| C．bees in the United States are on the edge of extinction |
| D．Miyako found the special feature of the gel by chance |
| A．its body is made like a bee’s |
| B．its GPS works more efficiently |
| C．some flowers are coated with the gel |
| D．horsehairs with the gel are attached to it |
| A．are not yet ready for practical use |
| B．may eventually replace bees in the future |
| C．are much more efficient than bee pollinators |
| D．can provide a solution to economic depression |
2 . Do you know how children in other countries spend their schooldays and what kind of games they always play?
Children in Brazil
| School | The school year runs from February to December. Children attend (上学) school for about four hours in the morning or the afternoon. About a quarter of children in Brazil do not attend school at all. |
| Play | Football is the most popular sport. Brazil’s beautiful beaches also make swimming and volleyball popular. |
| Family | Brazilian families are often large. Nearly a third of the population is under eighteen! |
| School | The school day begins from 8:00 am to 4:00 pm, with a two-hour lunch break. Schools close on Wednesday and Sunday, and are closed for a half day on Saturday. |
| Play | Football, bicycling and tennis are favorite sports in France. In some areas, pelote, a traditional ball game, is also very popular. |
| Family | Most French mothers work. The majority of preschool (幼儿园) children attend day care centres known as crèches. France has laws about naming children and all names have to be chosen from an official list. |
| School | Schools in Japan are very competitive (竞争的). Even pre-schoolers may attend “cramming (填鸭式教学的) schools” to prepare for exams. There is a summer break about six weeks, but the children have homework during this time. |
| Play | Comic books have been popular in Japan since the 1700s. Comics now account for about 40% of all published materials in Japan. Kite flying is enjoyed by people of every age. |
| Family | Homes in Japan are small on average. The typical family of four lives in five small rooms. Most fathers in Japan work long hours. As a result, some children only see their fathers on weekends or holidays. |
① Kite flying. ② Bicycling. ③ Football. ④ Pelote.
| A．②③④ | B．①②③ |
| C．①④ | D．①②③④ |
| A．Places with beautiful beaches. |
| B．The name of the place where French mothers work. |
| C．A day care centre for preschool children. |
| D．Cramming schools to improve children’s exam results. |
| A．like to read comic books | B．write their names on an official list |
| C．only see their fathers on weekdays | D．do not attend school |
3 . Artificial intelligence can predict when patients with a heart disorder will die, according to scientists.
The software learned to analyze blood tests and scans of beating hearts to spot signs that the organ was about to fail. The team, from the UK’s Medical Research Council, said the technology could save lives by finding patients that need more aggressive treatment. The results were published in the Journal of Radiology.
According to the researchers, high blood pressure in the lungs damages part of the heart, and about a third of patients die within five years after being diagnosed. There are treatments: drugs, injections straight into the blood vessels, a lung transplant. But doctors need to have an idea of how long patients might have left, in order to pick the right treatment.
The software was given scans of 256 patients’ hearts, and blood test results. When this data was combined with eight years of patient health records, the artificial intelligence predicted when patients would die.
The software could look about five years into the future. It correctly predicted those who would still be alive after one year about 80% of the time. The figure for doctors is 60%.
The team now want to test the software works in other patients in different hospitals before assessing whether it should be made widely available to doctors. The researchers also want to use the technology in other forms of heart failure, such as cardiomyopathy, to see who might need a pacemaker or other forms of treatment.
Dr Mike Knapton, from the British Heart Foundation, said, “This exciting use of computer software in medical practice will help doctors in the future to make sure that patients are receiving the correct treatment before the condition deteriorates and leaves them needing a lung transplant. The next step is to test this technology in more hospitals with heart disease.”
1. What can artificial intelligence do according to the passage?| A．Predicting how long a person with heart disease can survive. |
| B．Helping doctors diagnose people with heart disease. |
| C．Obeying orders and reminding heart disease patients to take pills. |
| D．Producing medicine without side effects for heart disease patients. |
| A．It can make accurate long-term predictions. |
| B．It has not yet been widely put into use. |
| C．It can prevent high blood pressure in the lungs damaging part of the heart. |
| D．It can help doctors make sure that patients are receiving the correct treatment. |
| A．continues | B．worsens |
| C．exists | D．improves |
| A．advertise | B．persuade |
| C．inform | D．entertain |
4 . For some years，my mother worked for a charity as President and Secretary.Selling raffle tickets(兑奖券) was her main means of bringing in the charity’s muchneeded funds.We girls would accompany her，selling tickets with great success.My father made and donated beautiful wooden toys，jewellery boxes and other lovely items as prizes.
Now my sister was always coming up with “good ideas”，most of which didn’t work out to plan.But that didn’t deter her.She had many just waiting to be tested.When she was eight and I was just five，we had a wonderful idea for a business adventure.We decided we would sell raffle tickets for charity，and that charity was us!
So one afternoon，we told our mother we were going to play in the park with our cousins as we did most days after school.But instead，we walked around the streets armed with a raffle book，a pen and a large cloth bag to carry the money.
We’d accompanied our mother many times when she sold tickets，so people were familiar with us when we appeared at their doors.Despite the blank looks they received when asking about the prizes on offer，they were very generous.Although there were no actual prizes，our mother’s previous track record enabled us to sell nearly the whole book of raffle tickets.
Like a little pair of lottery(彩票) winners，we walked home and proudly showed off our takings.But our enjoyment of this sudden wealth was shortlived，and our plans for spending it quickly failed.Our angry mother took us back to every ticket buyer，making us apologise and give the money back.Thankfully，our sweet neighbours didn’t make a big deal of our “clever” misbehavior and thus my mother’s
fundraising career could continue safely.We were taught a good lesson by our mother that day.Also I remember my sister’s entrepreneurial(企业家的) spirit dried up a bit after that.
1. What did the author’s father do?
| A．He got prizes ready. | B．He sold handmade items. |
| C．He was in charge of a charity. | D．He helped design raffle tickets. |
| A．Embarrass. | B．Shock. |
| C．Discourage. | D．Mislead. |
| A．They ran into their mother. |
| B．They met some generous strangers. |
| C．They got lost while walking around the streets. |
| D．They took advantage of people’s trust in their mother. |
| A．Honesty is the best policy. | B．What’s done can’t be undone. |
| C．Misfortune never comes alone. | D．Good advice is beyond all price. |
5 . Drive through any suburb in the U.S. today, and it’s hard to miss the bins that have become companions to America’s trash cans. Recycling has become commonplace, as people recognize the need to care for the environment. Yet most people’s recycling consciousness extends only as far as paper, bottles, and cans. People seldom find themselves facing the growing problem of e-waste.
E-waste rapidly increases as the techno-fashionable frequently upgrade to the most advanced device and the majority of them end up in landfills (垃圾填埋地). Some people who track such waste say that users throw away nearly 2 million tons of TVs, VCRs, computers, cell phones, and other electronics every day. Unless we can find a safe replacement, this e-waste may get into the ground and poison the water with dangerous toxins (毒素), such as lead, mercury, and arsenic. Burning the waste also dangerously contaminates the air.
However, e-waste often contains reusable silver, gold, and other electrical materials. Recycling these materials reduces environmental problems by reducing both landfill waste and the need to look for such metals, which can destroy ecosystems.
A growing number of states have adopted laws to ban dumping (倾倒) e-waste. Still, less than a quarter of this waste will reach lawful recycling programs. Some companies advertising safe disposal (处置) in fact merely ship the waste to some developing countries, where it still ends up in landfills. These organizations prevent progress by unsafely disposing of waste in an out-of-sight, out-of-mind location.
However, the small but growing number of cities and corporations that do handle e-waste responsibly represents progress toward making the world a cleaner, better place for us all.
1. What can we infer from the first paragraph?| A．Many Americans now have access to recycling bins. |
| B．E-waste cannot be put into trash cans in the U.S. |
| C．Most Americans have realized the dangers of e-waste. |
| D．Most of America’s trash cans are made of recycled material. |
| A．pollute. | B．heat. |
| C．absorb. | D．reduce. |
| A．It’s important. | B．It’s unsafe. |
| C．It’s acceptable. | D．It’s uncommon. |
| A．A large number of cities have begun to handle e-waste responsibly. |
| B．A growing number of states ship the e-waste to developing countries. |
| C．Progress is being made in handling e-waste. |
| D．The world will become cleaner by disposing of waste in an out-of-sight location. |
| A．To tell us how to recycle e-waste. |
| B．To talk about the future of e-waste. |
| C．To discuss if it’s necessary to recycle e-waste. |
| D．To encourage us to deal with e-waste properly. |
6 . A recent study questions whether placing attention on economic growth is the best way to improve child nutrition in low-and middle-income countries. Subu is a professor at the Harvard School of Public Health in Massachusetts. He says there is a common belief on the best way to improve child health in developing countries. He puts it this way: “Let’s just go after economic growth and then everything else will just follow.” But he says that is not always true.
Take India for example. A common measure of a country’s economic health is GDP (gross domestic product). India’s GDP has been growing by more than five percent a year. That is a higher growth rate than most Western countries. Yet more than two-fifths of India’s children are underweight. And Subu says, the percentage of underweight children has changed little since the early 1990s. He and other researchers asked a question, “Was economic growth failing to benefit children in countries other than India?” They looked at health surveys carried out since 1990 in 36 low-and middle-income countries, mostly South of Africa’s Sahara Desert. The researchers compared the effect of GDP growth and signs of child malnutrition-like physical weakness, slow growth and being underweight. But the researchers found only a small relationship.
The group reported their findings in the Journal Lancet Global Health. Subu says money should be spent on clear water, waste-treatment system and other programs. “Without these directing measures, what we are seeing is that economic growth by itself is not making much difference,” said Subu.
But that is not how Lawrence Haddad sees the case. He is head of the Institute of Development Studies in Britain. Lawrence Haddad says malnutrition has dropped sharply over the past 20 years in countries like Vietnam, Ghana or Brazil. He says economic growth was responsible for half of those declines. “The other half is because of improvements in water, health systems and nutrition programs,” said Haddad.
1. Why does the author take India for example?| A．To stress the importance of GDP. |
| B．To arouse reader’s interest in the topic. |
| C．To prove economic growth can’t improve child nutrition. |
| D．To show India has a higher growth rate than most Western countries. |
| A．Lacking nutrition. | B．Getting nutrition. |
| C．Providing nutrition. | D．Wasting nutrition. |
| A．Two-fifths of India’s children are underweight. |
| B．Economic growth only fails to benefit children in India. |
| C．Lawrence Haddad looked at health surveys carried out since 1990. |
| D．Subu believed economic growth itself could hardly make a difference. |
| A．Supportive. | B．Disapproving. |
| C．Unconcerned. | D．Doubtful. |
7 . Google’s new camera, called Clips, is a smart device. It comes with a case that has a clip (夹 子), but it’s not designed to be worn on your clothing. Most interestingly, it uses artificial intelligence to take photography out of your hands and captures moments entirely on its own!
What sets this roughly 2-inch by 2-inch camera, with a three-hour battery life and Gorilla Glass for toughness apart is that it is specially intended for candid moments, like when a child does something cute that may happen too quickly for you to pull out your smartphone.
The Clips device, it uses machine learning algorithms ( 计 算 程 序 ) to help capture scenes. Those algorithms include face recognition. “Once it learns that there’s a face you see frequently, it’ll try to get nice photos of those faces,” said Juston Payne, the device’s product manager. And they also want it to recognize facial expressions, which involved “training it to know what happiness looks like”. The Google team also trained it to recognize what not to shoot—like when a child’s hand is over the lens, or if it is tossed in a dark purse.
The only way to see the images is by connecting the camera with your phone, as it has no screen for viewing or editing.
Concerned it could seem strange? Yes, Payne admitted, but he said they addressed that by making it obvious what it is. A green light on the front signals that it is on. Besides, unlike a camera meant to monitor your home, it is not connected to the Internet.
“This product is only possible because of the way that silicon(硅) has advanced,” Payne said that now they could squeeze the technology down into a device this size. Going forward, we’re likely to get more assistance from the artificial intelligence packed into our apps and gadgets.
1. What is the most outstanding feature of Clips?| A．It enables easy Internet access. |
| B．It is equipped with tough glass. |
| C．It can be worn on your clothing. |
| D．It allows of hands-free photography. |
| A．Awkward. | B．Brief. |
| C．Touching. | D．Unforgettable. |
| A．The advance in technology. |
| B．The popularity of the Internet. |
| C．The screen for viewing and editing. |
| D．The rise of the smartphone industry. |
| A．New gadgets in the age of apps. |
| B．Artificial intelligence in daily Life. |
| C．A new digital camera from Google. |
| D．An alternative way to photograph. |
8 . When you’re sitting in class or behind your desk waiting for the clock to strike a time when you can go home, it is natural that your mind should wander (走神) a bit. It is common for your mind to wander to a vacation and even travel around the world. What if there is a way that you can travel around the world without having to pay any money?
A person that managed to make it around the world without spending much was Shantanu Starick. How did he trade off his service? Starick realized that as a photographer he had a service that people would usually be willing to pay money for, but he would instead offer his photography service to anyone who could provide him with food, shelter (住处) and transportation. Starick has been traveling for a surprising 30 months and has visited countries ranging from the United States to Ecuador.
In English-speaking countries, trading off services and communicating aren’t difficult for Starick. However, in farther areas where there isn’t an English- speaking person in sight it can be quite difficult. More than anything, the locals appreciate (欣赏) the effort behind trying to speak their language, even if you don’t exactly sound like a native speaker.
You can do it too!
Honestly, with a bit of confidence, drive and a skill you can trade, you’ll be able to do exactly the same as Starick.
Start thinking about what you can do to get around the world without paying money. With our social networks and the connectivity our world has, you can easily connect with and market yourself to people across the world without any effort.
1. What is the author’s purpose in writing the first paragraph?| A．To introduce the topic. |
| B．To describe students in class. |
| C．To give an example for the text. |
| D．To show people’s state of mind. |
| A．Join. | B．Exchange. |
| C．Stop. | D．Improve. |
| A．The skills. |
| B．The confidence to succeed. |
| C．The bravery to travel. |
| D．The effort to speak the local language. |
| A．His job is only traveling around the world. |
| B．He is too poor to afford the travels. |
| C．He has a skill to travel without paying much money. |
| D．He doesn’t hear of other languages except English. |
9 . Many years ago, when we were a young couple with two small children, aged 2 and 4, we were practically impecunious. My in-laws lived from hand to mouth, so we didn't expect any help from them. My parents lived a great distance away, and I was too ashamed to let them know about our situation.
My husband was trying to earn a living with an old pick-up truck, carrying groceries for local shopkeepers, but it was constantly breaking down. It took almost all the money we had to have it fixed. The truck was also the only means of transportation for us.
We lived in the countryside, and we always used the back door because the driveway led to it. One winter evening, I stepped outside to take a bag of trash to the barrel and almost tripped over something. It was nearly dark, and I had to bend down to see what it was. I could hardly believe my eyes. There sat a large basket loaded with food.
It was heavy, so I called my husband to carry it into the house. Once inside, we discovered two loaves of bread, some butter, several cans of vegetables, a can of orange sauce, and a large turkey. There was so much that I can't remember it all, but it was everything we needed to fix a wonderful dinner—everything except potatoes.
A little while later I remembered that I hadn't taken the trash to the barrel. By now it was dark, so I had to turn on the yard light —and that's when I spotted a small bag of potatoes sitting on the porch.
That dinner was the best I can remember.
We weren't able to thank our donators, though, because we never found out who had been so generous in helping a struggling young family. Whoever it was, we are forever grateful.
1. Which of the following can replace the underlined word "impecunious" in Paragraph 1| A．Generous. | B．Harmonious. |
| C．Penniless. | D．Stubborn. |
| A．By starting a garage. | B．By selling food door to door. |
| C．By delivering goods. | D．By working as a shop assistant. |
| A．She was angry. | B．She felt a sense of relief. |
| C．She was terrified. | D．She was astonished. |
| A．A helping hand in time | B．A struggling young couple |
| C．A tale of potatoes | D．A reward from a stranger |
10 . Nowadays more and more people are too busy with work to relax themselves. We have no time to tell a bed-time story to our children, or enjoy a nice dinner with our family, or take a break to think about how we live the precious life, or even meet friends. All we notice is that the distinctions that used to guide and steady us—between Sunday and Monday, public and private, here and there—are gone. We have more ways to communicate, but less and less to say, partly because we’re so busy communicating.
Maybe that’s why more and more people I know, even if they have no religious belief, seem to be turning to yoga, or mediation, or tai chi. Some friends of mine try to go on long walks every Sunday, or to “forget” their cellphones at home. A series of tests in recent years has shown that their brains become both calmer and sharper after spending time in quiet rural settings.
In my own case, I often turn to extreme measures to try to keep my sanity and ensure that I have time to do nothing at all. I’ve not yet used a cellphone and I’ve never Tweeted or entered Facebook. I tried not to go online till my day’s writing was finished, and I moved from Manhattan to rural Japan.
None of this is a matter of principle or asceticism (苦行主义): It’s just pure selfishness. Nothing makes me feel better—calmer, clearer and happier—than being in one place, absorbed in a book, a conversation, a piece of music. It’s actually something deeper than mere happiness: It’s joy, which David Steindl-Rast describes as “that kind of happiness that doesn’t depend on what happens”. That is the highest of the highest we have been longing for—The Joy of Quiet.
1. What does the underlined word “distinctions” refer to?| A．complication. | B．similarity. | C．simplicity. | D．difference. |
| A．Trapped in busy work, they are really forgetful. |
| B．The cellphone is not a suitable means of communication. |
| C．They leave their cellphones at home on purpose. |
| D．They hate modern techniques such as the cellphone. |
| A．he is out of work |
| B．whatever he does makes no sense |
| C．he can enjoy himself in his leisure time |
| D．he is worried about his writing |
| A．The writer is unwilling to help others since he is selfish. |
| B．Slowing down to find deep-down joy is necessary. |
| C．It is better to go back to the ancient times since we are so busy now. |
| D．We have more to say because we have more ways to communicate. |
| A．Enjoying quiet time is very important. |
| B．We can do some sports such as yoga to relax. |
| C．To feel better, we should do nothing at all. |
| D．The more we communicate, the better we will feel. |
