1 . According to the Solar Energy Industry Association, the number of solar panels installed(安装)has grown rapidly in the past decade, and it has to grow even faster to meet climate goals. But all of that growth will take up a lot of space, and though more and more people accept the concept of solar energy, few like large solar panels to be installed near them.
Solar developers want to put up panels as quickly and cheaply as possible, so they haven’t given much thought to what they put under them. Often, they’ll end up filling the area with small stones and using chemicals to control weeds. The result is that many communities, especially in farming regions, see solar farms as destroyers of the soil.
“Solar projects need to be good neighbors,” says Jordan Macknick, the head of the Innovative Site Preparation and Impact Reductions on the Environment(InSPIRE)project. “They need to be protectors of the land and contribute to the agricultural economy.” InSPIRE is investigating practical approaches to “low-impact” solar development, which focuses on establishing and operating solar farms in a way that is kinder to the land. One of the easiest low-impact solar strategies is providing habitat for pollinators(传粉昆虫).
Habitat loss, pesticide use, and climate change have caused dramatic declines in pollinator populations over the past couple of decades, which has damaged the U.S. agricultural economy. Over 28 states have passed laws related to pollinator habitat protection and pesticide use. Conservation organizations put out pollinator-friendliness guidelines for home gardens, businesses, schools, cities—and now there are guidelines for solar farms.
Over the past few years, many solar farm developers have transformed the space under their solar panels into a shelter for various kinds of pollinators, resulting in soil improvement and carbon reduction. “These pollinator-friendly solar farms can have a valuable impact on everything that’s going on in the landscape,” says Macknick.
1. What do solar developers often ignore?| A．The decline in the demand for solar energy. |
| B．The negative impact of installing solar panels. |
| C．The rising labor cost of building solar farms. |
| D．The most recent advances in solar technology. |
| A．Improve the productivity of local farms. |
| B．Invent new methods for controlling weeds. |
| C．Make solar projects environmentally friendly. |
| D．Promote the use of solar energy in rural areas. |
| A．To conserve pollinators. | B．To restrict solar development. |
| C．To diversify the economy. | D．To ensure the supply of energy. |
| A．Pollinators: To Leave or to Stay | B．Solar Energy: Hope for the Future |
| C．InSPIRE: A Leader in Agriculture | D．Solar Farms: A New Development |
2 . Can a small group of drones (无人机) guarantee the safety and reliability of railways and, at the same time, help railway operators save billions of euros each year? That is the very likely future of applying today’s “eyes in the sky” technology to make sure that the millions of kilometres of rail tracks and infrastructure (基础设施) worldwide are safe for trains on a 24/7 basis.
Drones are already being used to examine high-tension electrical lines. They could do precisely the same thing to inspect railway lines and other vital aspects of rail infrastructure such as the correct position of railway tracks and switching points. The more regularly they can be inspected, the more railway safety, reliability and on-time performance will be improved. Costs would be cut and operations would be more efficient (高效) across the board.
That includes huge savings in maintenance costs and better protection of railway personnel safety. It is calculated that European railways alone spend approximately 20 billion euros a year on maintenance, including sending maintenance staff, often at night, to inspect and repair the rail infrastructure. That can be dangerous work that could be avoided with drones assisting the crews’ efforts.
By using the latest technologies, drones could also start providing higher-value services for railways, detecting faults in the rail or switches, before they can cause any safety problems. To perform these tasks, drones for rail don’t need to be flying overhead. Engineers are now working on a new concept: the rail drones of the future. They will be moving on the track ahead of the train, and programmed to run autonomously. Very small drones with advanced sensors and AI and travelling ahead of the train could guide it like a co-pilot. With their ability to see ahead, they could signal any problem, so that fast-moving trains would be able to react in time.
1. What makes the application of drones to rail lines possible?| A．The use of drones in checking on power lines. | B．Drones’ ability to work at high altitudes. |
| C．The reduction of cost in designing drones. | D．Drones’ reliable performance in remote areas. |
| A．Personnel safety. | B．Assistance from drones. |
| C．Inspection and repair. | D．Construction of infrastructure. |
| A．To provide early warning. | B．To make trains run automatically. |
| C．To earn profits for the crews. | D．To accelerate transportation. |
| A．What Faults Can Be Detected with Drones |
| B．How Production of Drones Can Be Expanded |
| C．What Difficulty Drone Development Will Face |
| D．How Drones Will Change the Future of Railways |
3 . For years, David James, who studies insects at Washington State University, had wanted to examine the migration (迁徙)patterns of West Coast monarch butterflies (黑脉金斑蝶). The route the butterflies travel has been hardly known because the populations are too small to follow. For every 200 monarchs tagged (打标签)by a researcher, only one is usually recovered at the end of its trip, James says, and finding even 200 in the wild to tag is unlikely. Knowing the route is vital to conservation efforts, but James had no way to figure it out- until he got a phone call from Washington State Penitentiary in Walla Walla.
The prison was looking for new activities to improve the mental health of those serving long-term sentences. So James began working with prisoners to raise monarchs through the whole process of their transformation. The adult insects were then tagged and released from the prison. Over five years, nearly 10, 000 monarchs flew from the facility. Elsewhere in Washington, Oregon and Idaho, researchers released another few thousand.
The tags included email addresses, and soon after the first butterflies took off, James started receiving messages from people who had spotted them. The butterflies, the reports confirmed, wintered in coastal California. Twelve of them landed at Lighthouse Field State Beach in Santa Cruz. Several more headed to Bolinas and Morro Bay.
The work helps researchers identify ideal places to plant milkweed and other vegetation that are important to the life cycle of West Coast monarch butterflies. It also brought out the gentler side of some of the prisoners. “They were very worried that they were going to harm the butterflies, ”James says. Watching the monarch change their form also touched the men. “This butterfly changed, ” James recalls prisoners telling him, “and maybe we can too. ”
1. What was hard for David to do in his study?| A．Gain financial support. | B．Hire qualified workers. |
| C．Build a new laboratory. | D．Find enough monarchs. |
| A．To guarantee their safety. |
| B．To enable them to fly longer distances. |
| C．To track their travel routes. |
| D．To distinguish them from other species. |
| A．The patience the butterflies showed. |
| B．The hardship the butterflies underwent. |
| C．The transformation of the butterflies. |
| D．The devotion of James to the butterflies. |
| A．The impact of the research. |
| B．The findings of James’ study. |
| C．The release of the prisoners. |
| D．The life cycle of the butterflies. |
4 . My mother is 92. Unless I have to be out of town, each week I take my mother to do her
Last week she walked up to the store, but when she went to pay for her groceries, she was
At this store, people
My mother was so
So, whoever you are, thank you for the random act of
| A．exercise | B．housework | C．cooking | D．shopping |
| A．reward | B．medicine | C．company | D．shelter |
| A．return | B．collet | C．order | D．buy |
| A．short | B．cautious | C．wrong | D．concerned |
| A．aim | B．way | C．advice | D．reason |
| A．weight | B．things | C．mask | D．glasses |
| A．raise | B．add | C．bring | D．switch |
| A．show up | B．call in | C．check out | D．sit down |
| A．store | B．select | C．deliver | D．bag |
| A．stranger | B．cashier | C．friend | D．doctor |
| A．looked for | B．talked about | C．threw away | D．put back |
| A．receipt | B．soap | C．cash | D．bottle |
| A．asked | B．waited | C．cared | D．searched |
| A．repay | B．trust | C．recognize | D．help |
| A．luck | B．chance | C．gift | D．turn |
| A．surprised | B．amused | C．touched | D．convinced |
| A．in case | B．even if | C．as though | D．so that |
| A．energy | B．money | C．space | D．time |
| A．faith | B．courage | C．kindness | D．honor |
| A．made her day | B．changed her mind | C．caught her eye | D．met her demand |
5 . Researchers say they have translated the meaning of gestures that wild chimpanzees (黑猩猩) use to communicate. They say wild chimps communicate 19 specific messages to one another with a “vocabulary” of 66 gestures. The scientists discovered this by following and filming groups of chimps in Uganda, and examining more than 5,000 incidents of these meaningful exchanges.
Dr Catherine Hobaiter, who led the research, said that this was the only form of intentional communication to be recorded in the animal kingdom. Only humans and chimps, she said, had a system of communication where they deliberately sent a message to another group member.
“That’s what’s so amazing about chimp gestures,” she said. “They’re the only thing that looks like human language in that respect.”
Although previous research has shown that apes and monkeys can understand complex information from another animal’s call, the animals do not appear to use their voices intentionally to communicate messages. This was a significant difference between calls and gestures, Dr Hobaiter said.
Chimps will check to see if they have the attention of the animal with which they wish to communicate. In one case, a mother presents her foot to her crying baby, signaling: “Climb on me.” The youngster immediately jumps on to its mothers back and they travel off together. “The big message from this study is that there is another species (物种) out there. that is meaningful in its communication, so that’s not unique to humans,” said Dr Hobaiter.
Dr Susanne Shultz, an evolutionary biologist from the University of Manchester, said the study was praiseworthy in seeking to enrich our knowledge of the evolution of human language. But, she added, the results were “a little disappointing”.
“The vagueness of the gesture meanings suggests either that the chimps have little to communicate, or we are still missing a lot of the information contained in their gestures and actions,” she said. “Moreover, the meanings seem to not go beyond what other animal convey with non-verbal communication. So, it seems the gulf remains. ”
1. What do chimps and humans have in common according to Dr Hobaiter?| A．Memorizing specific words. | B．Understanding complex information. |
| C．Using voices to communicate. | D．Communicating messages on purpose. |
| A．It was well designed but poorly conducted. |
| B．It was a good try but the findings were limited. |
| C．It was inspiring but the evidence was unreliable. |
| D．It was a failure but the methods deserved praise. |
| A．Difference. | B．Conflict. | C．Balance. | D．Connection. |
| A．Chimpanzee behaviour study achieved a breakthrough |
| B．Chimpanzees developed specific communication skills |
| C．Chimpanzees: the smartest species in the animal kingdom |
| D．Chimpanzee language: communication gestures translated |
6 . For most people, having things stolen feels like an offence. Robbie Pruitt admitted that he got
For Pruitt, a keen bicyclist, the first thing to do was
With that thought in mind, Pruitt
The day the post went live, Pruitt received thirty
Pruitt tries to give his donations to families that are
In addition to
"It's a really great
| A．amazed | B．mad | C．curious | D．frightened |
| A．emotions | B．career | C．opinions | D．route |
| A．ever | B．together | C．instead | D．yet |
| A．ride | B．lock | C．repair | D．replace |
| A．lack | B．variety | C．increase | D．quality |
| A．instruction | B．qualification | C．transportation | D．permission |
| A．came up with | B．stuck to | C．gave up | D．broke away from |
| A．remembered | B．refused | C．hesitated | D．offered |
| A．by accident | B．in advance | C．for free | D．on credit |
| A．profit | B．budget | C．courage | D．excuse |
| A．shared | B．used | C．expensive | D．modern |
| A．enquiries | B．advertisements | C．notices | D．announcements |
| A．exported | B．sold | C．lent | D．returned |
| A．hardly | B．slightly | C．truly | D．instantly |
| A．Without | B．Beyond | C．Upon | D．Among |
| A．practical | B．commercial | C．mathematical | D．social |
| A．Otherwise | B．However | C．Somehow | D．Meanwhile |
| A．promise | B．celebration | C．comfort | D．experience |
| A．competition | B．service | C．ceremony | D．suggestion |
| A．compromise | B．impression | C．impact | D．progress |
7 . Dr. Smith of New York works at a center for children who can’t learn well. One day a father brought his son to him for
The father told Dr. Smith about his son. “My son has
After Dr. Smith tested the boy, he
At this
“Now you can
| A．testing | B．acting | C．teaching | D．playing |
| A．confidence | B．interest | C．experience | D．difficulty |
| A．returns | B．helps | C．appears | D．remains |
| A．waited for | B．searched for | C．believed in | D．called in |
| A．mirror | B．television | C．painting | D．desk |
| A．face | B．line | C．number | D．star |
| A．remove | B．follow | C．cross | D．cut |
| A．decisions | B．choices | C．mistakes | D．patterns |
| A．touched | B．dropped | C．moved | D．sharpened |
| A．speed | B．corner | C．end | D．point |
| A．staying | B．taking | C．preparing | D．writing |
| A．easy | B．important | C．obvious | D．exciting |
| A．ideas | B．words | C．questions | D．instructions |
| A．relax | B．leave | C．understand | D．promise |
| A．Interestingly | B．Absolutely | C．Suddenly | D．Unfortunately |
8 . We all know that unpleasant feeling when we’re talking about something interesting and halfway through our sentence we’re interrupted. But was that really an interruption? The answer depends on whom you ask, according to new research led by Katherine Hilton from Stanford University.
Using a set of controlled audio clips (录音片段), Hilton surveyed 5, 000 American English speakers to better understand what affects people’s perceptions of interruptions. She had participants listen to audio clips and then answer questions about whether the speakers seemed to be friendly and engaged, listening to one another, or trying to interrupt.
Hilton found that American English speakers have different conversational styles. She identified two distinct groups: high and low intensity speakers. High intensity speakers are generally uncomfortable with moments of silence in conversation and consider talking at the same time a sign of engagement. Low intensity speakers find it rude to talk at the same time and prefer people speak one after another in conversation.
The differences in conversational styles became evident when participants listened to audio clips in which two people spoke at the same time but were agreeing with each other and stayed on topic, Hilton said. The high intensity group reported that conversations where people spoke at the same time when expressing agreement were not interruptive but engaged and friendlier than the conversations with moments of silence in between speaking turns. In contrast, the low intensity group perceived any amount of simultaneous (同时) chat as a rude interruption, regardless of what the speakers were saying.
“People care about being interrupted, and those small interruptions can have a massive effect on the overall communication,” Hilton said. “Breaking apart what an interruption means is essential if we want to understand how humans interact with each other.”
1. What does Hilton’s research focus on?| A．What interruptions mean to people. |
| B．Whether interruption is good or not. |
| C．How to avoid getting interrupted. |
| D．Why speakers interrupt each other. |
| A．Record an audio clip. | B．Answer some questions. |
| C．Listen to one another. | D．Have a chat with a friend. |
| A．It’s important. | B．It’s interesting. |
| C．It’s inefficient. | D．It’s impolite. |
| A．Human interaction is complex. |
| B．Communication is the basis of life. |
| C．Interruptions promote thinking. |
| D．Language barriers will always exist. |
9 . For lots of kids, toddlerhood (幼儿期) is an important time for friendship. Studies show that the earlier kids learn to form positive relationships, the better they are at relating to others as teenagers and adults. Playing together also helps these kids practice social behaviors, such as kindness, sharing, and cooperation.
Even so, how quickly your child develops into a social creature may also depend on his temperament(性格). Some toddler s are very social, but others are shy. In addition, the way that toddlers demonstrate that they like other children is markedly different from what adults think of as expressions of friendship. Research at Ohio State University in Columbus found that a toddler’s way of saying “I like you” during play is likely to come in the form of copying a friend’s behavior.
This seemingly unusual way of demonstrating fondness can result in unpleasant behavior. Regardless of how much they like a playmate, they may still grab his toys, refuse to share, and get bossy. But experts say that this is a normal and necessary part of friendship for kids this age. Through play experiences, toddlers learn social rules. That’s why it’s so important to take an active role in your toddler’s social encounters by setting limits and offering frequent reminders of what they are. When you establish these guidelines, explain the reasons behind them.
Begin by helping your child learn sympathy (“Ben is crying. What’s making him so sad?”), then suggest how he could resolve the problem (“Maybe he would feel better if you let him play the ball.”). When your child shares or shows empathy(同理心) toward a friend, praise him (“Ben stopped crying! You made him feel better.”).
Another way to encourage healthy social interaction is by encouraging kids to use words- not fists-to express how they feel. It’s also important to be mindful of how your child’s personality affects playtime. Kids are easy to get angry when they’re sleepy or hungry, so schedule playtime when they’re refreshed.
1. What does it indicate when toddlers copy their playmates’ behavior?| A．They are interested in acting. | B．They are shy with the strangers. |
| C．They are fond of their playmates. | D．They are tired of playing games. |
| A．Design games for them. | B．Find them suitable playmates. |
| C．Play together with them. | D．Help them understand social rules. |
| A．Giving examples. | B．Explaining concepts. |
| C．Providing evidence. | D．Making comparisons. |
| A．How Children Adapt to Changes | B．How to Be a Role Model for Children |
| C．How Your Baby Learns to Love | D．How to Communicate with Your Kid |
10 . I was halfway across Indiana headed home to Kentucky when my car broke down. My phone was
I sat alongside my car for several hours trying to
Right then and there, this total
| A．busy | B．loud | C．dead | D．secure |
| A．mechanic | B．policeman | C．manager | D．guide |
| A．washing | B．parking | C．purchasing | D．maintaining |
| A．feel | B．beat | C．absorb | D．produce |
| A．promised | B．refused | C．stopped | D．volunteered |
| A．solved | B．noticed | C．escaped | D．explained |
| A．surprise | B．regret | C．amusement | D．disappointment |
| A．called up | B．pulled out | C．put down | D．threw away |
| A．liar | B．beginner | C．stranger | D．loser |
| A．free | B．ready | C．uncertain | D．unable |
| A．pronounced | B．agreed | C．discovered | D．doubted |
| A．Tiredness | B．Kindness | C．Loneliness | D．Carefulness |
| A．Folding | B．Drying | C．Soiling | D．Mending |
| A．saved | B．called | C．judged | D．banned |
| A．friend | B．daughter | C．coworker | D．customer |
