1 . You might have heard about how honey bees are doing poorly these days. It’s different, though, from the situation many of the world’s vulnerable (脆弱的) animals find themselves in. We want them to live their lives and grow stronger, but are we willing to change our lifestyles to make it happen? The decrease in honey bees is a bit different, because if honey bees can’t live well, neither can people and, eventually people won’t eat as a result.
As happened in 2017, U.S. beekeepers lost 40 percent of their bees because of a disease. It’s really about the earnings of beekeepers and the reduced amount of bees. But it doesn’t stop there. Honey bees go around doing pollination (授粉). And do you know what need to be pollinated? That’s our crops. The United States Department of Agriculture (USDA) estimates bees pollinate about $15 billion worth of apples and peaches each year in the United States alone.
So, we 21st-century humans not only take notice, but also start trying to fix the problem. It’s infeasible that we give every bee the treatment. We can’t imagine how huge the task is and how hard we carry on it! The most promising immediate solution seems to prevent the disease. That’s where the bee vaccine (疫苗) comes.
Scientists have long thought immunizing (使免疫) bees will be unworkable, but a 2015 study discovered that bees transfer immunity to their babies through protein. Vaccinating a bee won’t help that bee, but if you vaccinate the queen of bees, she can pass her immunity on to her later generations through her eggs.
The new vaccine will treat for American foulbrood (AFB), a serious disease that quickly destroys bees. It’s in the testing phases and most likely headed for bee boxes near you. And don’t worry, it doesn’t require a tiny doctor’s chair and needle to deliver the vaccine—the queen bee can drink the medicine in a little sugar water and pass it along to her later generations.
1. What does exactly the author intend to tell us through the 2017 beekeepers’ incident?| A．The beekeepers lead a terrible life. |
| B．The number of bees continues to decrease. |
| C．The decline of bees affects the production of grain. |
| D．The pollination work of bees is huge and complicated. |
| A．Practical | B．Impossible | C．harmful | D．Convenient |
| A．The bee vaccine is hard to develop. |
| B．Bees will learn skills from the queen. |
| C．Bees can transfer immunity to each other. |
| D．The bee vaccine can take effect in the long run. |
| A．It’s applied to all sick bees. |
| B．It will be delivered to bees by skilled doctors. |
| C．It works by allowing the queen of bees to take it. |
| D．It has been put into use and makes many bees survive. |
2 . It was a day in late December. The Christmas tree had been taken down. The lights and decorations had been boxed up and put in the closet until next year. And I was feeling a little empty. Surely I wasn't looking forward to the long, cold, dark winter to come. I had always been a light lover on the inside. I tried to take comfort in knowing that a few more minutes of daylight was being added each day, but it hardly worked.
I was both surprised and delighted when I looked, out of my window and saw that a spring-like day had suddenly arrived. I could hear the neighborhood children outside playing in the warm air. I smiled when I saw them and my inner little girl longed to be out there riding bikes and playing games as well.
I tied my dogs for their afternoon walk hoping to enjoy some of the sunshine myself. As I was about to head out the door, however, I decided to do something a little different. I reached down and pulled my shoes and socks off. I hadn't been barefoot outside since the summer. I slowly stepped out on the cool damp grass. It felt so alive under my feet. I laughed as I walked along. I remembered something I once read too, “Walk as if you were kissing the earth with your feet.” And with each step I did so. My walk felt sacred and holy. I felt a oneness with the world and the love of Heaven all around me. With love in my heart, I thanked God for the gift of this day and no longer dreaded the coming of the winter. I thought I had gathered enough energy and courage to welcome it.
AH of us are walking through this life. But it is up to each of us how we do so. Are you going to trip and walk with heavy steps and complain with each step you take? Or are you going to kiss the earth with your feet and Heaven with your heart? The choice is yours.
1. How did the author feel shortly after Christmas at first?| A．Surprised. | B．Delighted. | C．Unhappy. | D．Relaxed. |
| A．She was inspired by delighted children. | B．She had to walk her dogs in the afternoon. |
| C．She intended to give the neighbors warmth. | D．She was touched by her childhood memories. |
| A．She kissed the earth lovingly. | B．She walked barefoot outside. |
| C．She read a book on the grass. | D．She dried her feet in the sun. |
| A．Forgot. | B．Judged. | C．Desired. | D．Feared. |
3 . If there had to be a father of handwashing in history, it would be Ignaz Semmelweis. While working at Vienna General hospital, the Hungarian doctor, faced with a situation in which maternal death (孕产妇死亡) in hospitals were significantly higher than local clinics, tried hard clues as to why.
Germs (细菌) were yet to be discovered, and it was still believed in the 1840s that disease was spread by bad smells in the air. So it didn’t seem a problem that trainee doctors hanging out of labs to dissect (解剖) human bodies would pop up to the maternity ward (产房) to deliver a baby without washing their hands.
Then an accidental finger cut by a knife during a dissection caused a doctor to die, seemingly of the same sign the mothers had been getting. Semmelweis assumed that something from the dead bodies was to blame, which might, through the hands of doctors, make their way into women’ s bodies during childbirth.
To test his theory, he ordered doctors to wash their hands and instruments in some chlorine solution. As a result, the death rate for new mothers dropped to about 1 percent, compared with that of as high as 18 percent before the experiment.
However, he faced great resistance, and met a sad end. People at that time didn’t think of themselves as sort of walking Petri dishes. And the majority of doctors then were from middle- or upper-class families, and thought of themselves as very clean people.
Over the next 40 years, a better understanding of germs developed, and attitudes to hygiene (卫生) gradually shifted. In 1876, the German scientist Robert Koch discovered the anthrax bacillus (炭疽), kicking off the new research field of medical bacteriology. Many more germs were later identified. Surgeons started to take handwashing seriously.
By the 1890s and into the early 1900s, handwashing moved from being something doctors did to something everybody had been told to do.
1. What was the situation like in the 1840s?| A．Germs might have been discovered then. |
| B．Women suffered from delivering babies then. |
| C．The air at that time was dirty and full of viruses. |
| D．People were unaware of how disease was spread. |
| A．Liquid. | B．Option. | C．Tissue. | D．Shell. |
| A．It was effective. | B．It was necessary. |
| C．It was ridiculous. | D．It was dangerous. |
| A．Steps to Protect Yourself |
| B．Disease Spreading by Your Hand |
| C．Hand Washing Critical in Fighting Viruses |
| D．The First Recorded Discovery of Handwashing |
4 . If you're feeling hungry, what’s the easiest way to satisfy your Hunger? Many of Us will reach for a takeaway menu and order some delicious-but possibly unhealthy -food. And our increasingly hectic lives add to our need to buy ready-made food because we always have no time or energy to cook on our own.
Eating options are endless, and new technology means we can feed our desire at the push of a button. Takeaway delivery apps make ordering food quick and convenient. It's estimated that in the UK alone, people eat three million takeaway meals a day, and the three biggest delivery apps together offer a choice of 100 foods from 60,000 restaurants. Amelia Brophy, head of UK Data Products at YouGov, told the BBC that its research suggests that the frequency of takeaways ordered is expected to increase in the future.
It’s no wonder we are tempted to skip the grocery shopping, bypass the kitchen, and tuck into something that someone else has prepared. But ordering a pizza, a spicy curry or a box of noodles, can come at a price both financially and to our health. Eating too much processed and unhealthy fast food has some effect on obesity and the risk of developing certain diseases. A few years ago, the BBC Good Food Nation Survey found most people eating fast food on average two days per week gradually putting on weight.
Of course, reducing salt, sugar and fat is one way to make takeaway food healthier, as well as offering smaller portion sizes. But the best advice for you is to find a recipe book and try making your own nutritious meals. And if you haven't got time, try ordering a healthier alternative from the menu.
1. What does the underlined word “hectic” in Paragraph 1 probably mean?| A．Abnormal. | B．Busy. | C．Irregular. | D．Social. |
| A．The various food. |
| B．Their delicious taste. |
| C．Their relatively low price. |
| D．The advanced technology. |
| A．Takeaway foods may do harm to health. |
| B．Takeaway foods make people light-hearted. |
| C．Pizza and noodles are the most popular takeaway foods. |
| D．The UK has the largest number of people ordering takeaway foods. |
| A．To give readers some suggestions. |
| B．To offer readers an alternative menu. |
| C．To find the reason for ordering takeaway foods. |
| D．To choose the best way of making nutritious meals. |
5 . Nowadays, video gaming has made impressive gains in the field of standardized competition. One of the fashionable debates is whether competitive video games are sports or not. If cyberathletes are competing against formal teams in a formal environment, with real titles and monetary stakes on the line, it seems strange not to consider the activity a sport. However, unless something technologically odd gains complete control over our world in the next few decades, they never should be. Cyberathletes and eSports aren’t incomparable to traditional athletes and sports because they require less physical exertion or dedication. They are incomparable because they are different from traditional sports in a number of ways.
Traditional sports are steadfast, and consistent in their structures and mechanics. A professional American football player from any past decade could be transplanted into a current football field, and would only have to be told of a few minor rule changes. The player would know what to do, where to go, and how to accomplish the ultimate goal. He may need to learn a few new plays, but it’s fundamentally the same game. However, competitive video gaming has a variety of goals, and those goals are fluid and dynamic. A competitive video gamer from decades past might be aware of the final goal (winning the game, capturing the flag, eliminating the opposing team, etc.), but the execution (执行方式) would be completely foreign. Controls change, maps change, locations change, even the minute rules are adjusted on a regular basis. As a competitive video gamer, one needs to adapt to a much more aggressive ruleset than most sports or other games. Therefore the video game competitions are less likely to be properly regulated.
Most traditional sports are approachable by Everyman, even the esoteric(深奥的) ones, at least in an educational setting, where budgets and funding are set for them. While home computers are widely accessible, a large percentage of the gaming population is unable to participate in competitive gaming due to the high-standard computing requirements. Even decade-old competitive games like Counter-Strike 1.6 require more equipment and gear than most traditional sports. A pick-up game of basketball, football, or soccer is far more accessible than a pick-up game of Counter-Strike.
Traditional sports are embedded in our culture for good reasons: they offer an entertaining diversion and a great form of physical activity for millions of worldwide fans. The principles and lessons gleaned from traditional sports emphasize teamwork, collaboration, and critical evaluations of any given game setting. While many of these lessons are applicable to competitive gaming, competitive video gamers are still distancing themselves from competing for “sport” status, when their pastime and trade is so fundamentally different and ever-changing at such a regular pace.
1. What is the author’s opinion towards competitive video games?| A．They can be seen as sports due to their emphasis on teamwork. |
| B．They can be seen as sports due to their standardized regulations. |
| C．They can not be seen as sports due to their lack of physical and mental efforts. |
| D．They can not be seen as sports due to the inconsistent rules and high requirements. |
| A．Difficult. | B．Common. | C．Typical. | D．Different. |
| A．To explain the reason why eSports surpass traditional sports. |
| B．To explore the possibility that competitive video games will be sports. |
| C．To provide an example of the difference between eSports and traditional sports. |
| D．To account for the fact that the competitive features of video games are impressive. |
| A．By quoting and citing. |
| B．By listing and analyzing. |
| C．By comparison and contrast. |
| D．By explaining and evaluating. |
6 . 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 to my husband to carry 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．Adequate. | B．Penniless. | C．Harmonious. | D．Stubborn. |
| A．By starting a garage. | B．By selling food door to door. |
| C．By working as a shop assistant. | D．By delivering goods. |
| A．She was annoyed. | B．She was astonished. |
| C．She was terrified. | D．She felt a sense of relief. |
| A．A tale of potatoes | B．A reward from a stranger |
| C．A helping hand in time | D．A struggling young couple |
7 . A thief who dropped a winning lottery ticket at the scene of his crime has been given a lesson in honesty. His victim, who picked up the ticket and then claimed the $25,000 prize, managed to trace him, and handed over the cash. The robbery happened when maths professor Vinicio Sabbatucci, 58, was changing a tire on an Italian motorway. Another motorist, who stopped “to help”, stole a suitcase from his car and drove off. The professor found the dropped ticket and put it in his pocket before driving home to Ascoli in eastern Italy.
Next day, he saw the lottery results on TV and, taking out the ticket, realized it was a winner. He claimed the 60 million lire(里拉) prize. Then he began a battle with his conscience. Finally, he decided he could not keep the money despite having been robbed. He advertised in newspapers and on the radio, saying, “I’m trying to find the man who robbed me. I have 60 million lire for him—a lottery win. Please meet me.Anonymity(匿名) guaranteed.”
Professor Sabbatucci received hundreds of calls from people hoping to trick him into handing them the cash. But there was one voice he recognized and he arranged to meet the man in a park. The robber, a 35-year-old unemployed father of two, gave back the suitcase and burst into tears. He could not believe what was happening. “Why didn’t you keep the money?” he asked. The professor replied, “I couldn’t because it’s not mine.” Then he walked off, spurning the thief’s offer of a reward.
1. The underlined sentence “Then he began a battle with his conscience.” in Paragraph 2 implies all of the following except that ________.| A．he knew what he should do as soon as he saw the lottery results |
| B．he hesitated about keeping the money for sometime |
| C．he thought for a moment of avenging himself on the robber |
| D．he came to realize that honesty is more important than money |
| A．wanted to make fun of him | B．hoped to get the money |
| C．knew who the robber was | D．lost the lottery ticket |
| A．Excited. | B．Frightened. |
| C．Ashamed. | D．Incredible. |
| A．accepting | B．claiming |
| C．rejecting | D．cancelling |
8 . Children born in the past four decades had the luxury of being the center of their parents’ attention. The entire family’s resources were poured into their education and well-being.
However，when the same resources are split between two children，the amount distributed to each one is going to shrink.
According to the Hangzhou Daily，when there are two children in the family，parents tend to choose public schools instead of private schools，which are usually more expensive. Each child is enrolled in fewer after-school training classes.
But having a second child may cure some deep-rooted problems in China’s traditional family education.
Having two children in the family can help to prevent one child being spoiled by too much attention，according to People’s Daily. It also spares the only child from the pressure of shouldering parental expectations all alone. Taking care of a sibling also enables children to gain a sense of responsibility，cooperation，obedience and caring.
China’s public education system is also expected to shift. Currently，there are not enough vacancies in kindergarten and schools to accommodate the potential increase in children.
“It’s not only the enrollment capacity of educational institutions that will feel the pressure. People are also placing more emphasis on the quality of education，”Peng Xizhe， director of the Population and Development Research Policy Center at Fudan University，told China Education Daily.
He predicts the government may have to invest more to support the educational system as a result of the new family planning measure.
1. What can children benefit from a two-child family?| A．They can have less pressure. |
| B．They can study in private schools. |
| C．They can get much more attention. |
| D．They can take more after-school training classes. |
| A．hold | B．adapt | C．solve | D．consider |
| A．People are placing more emphasis on the quality of education. |
| B．The government may have to invest more to support the educational system. |
| C．The new family planning measure will challenge the current educational system. |
| D．The educational institutions will feel the pressure that their capacity is not enough. |
| A．To show benefits of owning two children. |
| B．To persuade people to bear more children. |
| C．To encourage people to have only one child. |
| D．To introduce the impact of two-child policy. |
9 . As the effects of climate change become more disastrous, well-known research institutions and government agencies are focusing new money and attention on an idea: artificially cooling the planet, in the hopes of buying humanity more time to cut greenhouse gas emissions.
That strategy, called solar climate intervention (干预) or solar geoengineering, involves reflecting more of the sun’s energy back into space — abruptly reducing global temperatures in a way that imitates the effects of ash clouds flowing out from the volcanic eruptions. The idea has been considered as a dangerous and fancied solution, one that would encourage people to keep burning fossil fuels while exposing the planet to unexpected and potentially threatening side effects, producing more destructive hurricanes, wildfires floods and other disasters.
But. as global warming continues, producing more destructive hurricanes, wildfires floods and other disasters, some researchers and policy experts say that concerns about geoengineering should be outweighed by the imperative to better understand it, in case the consequence of climate change become so terrible that the world can’t wait for better solutions.
One way to cool the earth is by injecting aerosols (气溶胶) into the upper layer of the atmosphere. where those particles reflect sunlight away from the earth. That process works, according to Douglas MacMartin, a researcher at Cornell University.
“We know with 100% certainty that we can cool the planet,” he said in an interview. What’s still unclear, he added, is what happens next. Temperature, MacMartin said, is an indicator for a lot of climate effects. “What does it do to the strength of hurricanes?” he asked, “What does it do to agriculture production? What does it do to the risk of forest fires?”
Another institution funded by the National Science Foundation will analyze hundreds of simulations of aerosol injection, testing the effects on weather extremes around the world. One goal of the research is to look for a sweet spot: the amount of artificial cooling that can reduce extreme weather events without causing broader changes in regional rainfall patterns or similar impacts.
1. Why do researchers and government agencies work on cooling the earth?| A．To prevent natural disasters. | B．To win more time to reduce gas emissions. |
| C．To imitate volcanic eruptions. | D．To encourage more people to bur fossil fuels. |
| A．More volcanoes will throw out. |
| B．More solar energy will go into space. |
| C．More disasters will endanger the future of the world. |
| D．People will keep burning fossil fuels to keep warm. |
| A．He thinks more research remains to be done. |
| B．He is optimistic about the effect of cooling the earth. |
| C．He is concerned about the reduction in agriculture production. |
| D．He disapproves of the practice of solar climate intervention. |
| A．The rainfall pattern of a region. |
| B．The modest drop in temperature. |
| C．The number of extreme weather events. |
| D．The injection amount of aerosol. |
10 . As heat waves continue to ravage the planet, air conditioners are becoming more and more common. However, these "active" cooling devices are posing problems because the electricity consumption which most people are concerned about and the release of ozone-damaging chemicals worsen the greenhouse gas effect, resulting in the creation of heat islands and further thermal pollution. Therefore, "passive" cooling, which doesn't have such effects, has attracted considerable attention from both scientists and ordinary people in recent years.
In a recent study, a team of researchers from China and US presented an eco-friendly, low-cost smart coating to keep buildings cooler while consuming zero electricity. Infrared radiation-based passive cooling has been investigated since 2014, but challenges, mainly the expensive and unsustainable design, have greatly limited their large-scale and widespread application. Besides, the imbalance in cooling ability of these coatings during the day and night tends to lead to great day-night temperature differences as more heat is lost than gained at night.
The solution therefore requires a "smart" mechanism that can both enhance daytime cooling and minimize nighttime heat loss. To do this, the researchers created a new smart coating comprised of conventional building materials, including titanium dioxide nanoparticles, fluorescent microparticles, and glass microspheres that were engineered to reflect most of the sunlight. Specifically, the titanium dioxide particles effectively reflect sunlight through light scattering（撒播）while the fluorescent particles increase the amount of reflection by changing the absorbed sunlight into fluorescence emissions, which drive more heat away from the building. Meanwhile, the glass microspheres re-send mid-infrared broadband radiation, allowing not only heat loss, but allowing heat exchange to take place between the building and the sky.
The coating was tested on a model concrete building. Through this efficient heat exchange with the sky, daytime cooling was strengthened while nighttime cooling was reduced. The building's inside temperature was always maintained at around 26℃, even when the out-side temperature varied from 24℃ to 37℃ during the day. We believe this new coating will make it to commercialization soon, enabling a sustainable, passive cooling technology that could help to fight climate change and the global energy crisis.
1. What is the virtue of passive cooling?| A．It is simple to design. | B．It uses no chemicals. |
| C．It is smart. | D．It uses no power. |
| A．It was hard to design. |
| B．Its material was hard to produce. |
| C．Its heat loss and cooling are imbalanced. |
| D．It wasn't tested on a model concrete building. |
| A．Metal. | B．System. | C．Platform. | D．Building. |
| A．The principle of air-conditioning. |
| B．The differences between active and passive cooling. |
| C．A new coating to keep buildings cool without electricity. |
| D．A new building to maintain its inside temperature without electricity. |
