1 . Packaging can play a greater role in keeping produce and other foods fresh, therefore minimizing food waste — especially if consumers can better understand those packaging technologies. That’s among the takeaways of research led by Michigan State University (MSU)’s School of Packaging, detailed in a recently released white paper.
In the United States, food waste in landfills doubled from 1990 to 2020, according to data shared by the US Environmental Protection Agency this year. Researchers cited data showing 40% of the food supply is wasted each year, with 43% of that happening at the consumer or household level.
Ameripen, the only organization exclusively focused on US public policy for the entire packaging industry, and the Environmental Research & Education Foundation funded research that included a survey of more than 1,000 people in the United States. Ameripen said it wanted to know what role packaging could play in reducing household food waste as well as understand consumer awareness of food packaging’s value and functions.
The survey asked consumers about their understanding of packaging forms and willingness to pay more for packaging designed to reduce food waste, among other areas.
The study found that whole fruits and vegetables, particularly bananas and lettuce, are the foods most wasted by households, with dairy products, prepared packaged foods and leftovers also common culprits (罪魁祸首). “Half-eaten packaged food products and food without packaging that went bad before it was eaten are the two primary reasons for food waste in American households, indicating there is opportunity for improved packaging design to help consumers with extending shelf life, reuse and size,” the white paper states.
Researchers reported that while consumers’ current understanding of packaging technologies was “limited”, they indicated “they would pay more for food contained in packaging that extends freshness and shelf life.”
“There’s a need to design packaging for produce that is currently not packaged; that most of the produce in this study was wasted is because there is no packaging at all,” MSU’s Korey Fennel said during the webinar (网络研讨会), also noting the importance of “intelligent packaging” that could indicate the shelf life of food products.
1. What does the underlined word “minimizing” in the first paragraph mean?| A．Showing. | B．Continuing. | C．Recovering. | D．Reducing. |
| A．Summarize the previous paragraph. | B．Provide some advice for the readers. |
| C．Add some background information. | D．Introduce a new topic for discussion. |
| A．By making observations. | B．By asking questions. |
| C．By carrying out experiments. | D．By referring to former studies. |
| A．Cautious. | B．Unclear. | C．Critical. | D．Favorable. |
2 . Estefanía Rebellón was once a migrant (流动的) child. She was 10 when her family fled Cali, Colombia, because of death threats to her father, who had been forced into hiding. They settled in Miami. Despite the challenges she faced as a migrant child, she was lucky to have teachers who advocated for her and guided her along the way.
Rebellón moved from Miami to Los Angeles when she was 21 to pursue an acting career. In 2018, she was so moved after volunteering in migrant camps in Tijuana that she put her career on hold. “There were no schools set up to help these kids. They were walking around the camps barefoot,” she said.
Rebellón and her partner Kyle Schmidt used about $1,000 of their savings to buy tents and supplies and set up a makeshift (临时的) school at the border. They enlisted volunteer teachers to provide learning opportunities in the camps. In the months that followed, when those families living in the camps were moved to shelters, Rebellón and Schmidt wanted to continue offering educational services.
“I thought, ‘Why don’t we turn a bus into a mobile classroom, and we could take it to all the different shelters?’” Rebellón said. Over the next year, Rebellón and Schmidt bought and transformed a bus, partnered with shelters, and drove the bus over the border.
In 2019, she co-founded the Yes We Can World Foundation, a nonprofit organization that believes every child has the right to education and safe spaces regardless of their location, current legal status or economic background.
Rebellón’s organization hires professional teachers and tailors their curriculum (课程) to the specific needs of each student. “The program has been officially approved by the education secretary in Mexico and serves children aged 3 to 15 — a crucial period for education,” Rebellón said.
Today, the Yes We Can World Foundation educates 250 — 300 kids a day through its four school locations along the border and three mobile school buses. “Since 2019, the group has served more than 3,100 migrant children from 10 countries,” Rebellón said.
1. What can be learned about Rebellón from the first paragraph?| A．She received death threats. | B．Her teachers helped her a lot. |
| C．She was forced into hiding. | D．Her acting career began early. |
| A．She should value her hard-won life. |
| B．Children could be happy in any environment. |
| C．Migrant kids lacked opportunities for schooling. |
| D．She was lucky to have the ability to help others. |
| A．To set the scene for her show. |
| B．To realize her childhood dream. |
| C．To give full play to the value of a bus. |
| D．To offer children convenient access to education. |
| A．It’s far-reaching. | B．It’s predictable. |
| C．It’s short-lived. | D．It’s unidentifiable. |
1. What can the students read in the No.1 Reading Room?
| A．Books in Chinese. |
| B．Books in foreign languages. |
| C．Newspapers and magazines. |
| A．On the first floor. | B．On the second floor. | C．On the third floor. |
| A．The No.2 Reading Room. | B．The No.4 Reading Room. | C．The Reference Materials Center. |
| A．For two weeks. | B．For a month. | C．For five weeks. |
1. Why does the woman say thanks to the man?
| A．He is driving her around. |
| B．He introduced a friend to her. |
| C．He recommended a job to her. |
| A．It is far from the supermarket. |
| B．It has an old-fashioned kitchen. |
| C．It is unaffordable for the woman. |
| A．Sell their apartment. | B．Look for a roommate. | C．Share a room with the woman. |
1. Why does Sarah feel sad?
| A．She has lost her cat. |
| B．She has quarreled with her friend. |
| C．The schoolwork is so hard for her. |
| A．Get a new cat. | B．Look for Tony. | C．Read a book. |
| A．Get home early. | B．Focus on her lessons. | C．Talk to Miss Lennon. |
6 . Not unlike the wings of airplanes, the blades (叶片) of wind turbines (涡轮机) need to be kept ice-free in order to function properly. Scientists have now developed an inexpensive method of using drones (无人机) to apply an eco-friendly anti-icing coating (涂层) to those blades.
If too much ice builds up on wind turbine blades, they will turn more slowly, producing less energy. What’s more, if an equal amount of ice isn’t present on all three blades, the turbine’s balance may be thrown off, leading to increased wear and possibly even disastrous failure.
There are anti-icing heating systems that can be built into the blades, but these may be beyond the financial means of many wind farm (风电场) operators. The same can be said for using helicopters to apply ice-prevention chemicals.
Seeking a more economical but still effective alternative, scientists from two branches of Germany’s Fraunhofer research group recently started looking to drones. The research project is known as “TURBO: Temporary coating by means of drones — Icing protection of wind turbines as a case study”.
In the current version of the resulting system, a hexacopter drone is equipped with a small pump that delivers anti-icing liquid. The liquid is sprayed (喷洒) at high pressure — which is just 0. 3 mm wide — producing tiny droplets with a diameter of 100 micrometers.
Using this setup, the drone has successfully been used to apply coatings of the droplets onto the edges of wind turbine blades, even at wind speeds of up to 35 km/h (22 mph). Once solidified (固化/凝固), those coatings prevent ice formation for several weeks before a fresh coating is applied.
The scientists are now seeking industry partners to help commercialize (商业化) the TURBO technology. It could also find use in the maintenance (维护) of power lines, the upper levels of tall buildings, or other things that are difficult to reach by conventional means.
1. What is paragraph 2 mainly about?| A．Problems caused by icing. | B．The process of ice formation. |
| C．Disasters brought about by drones. | D．The function of wind turbines. |
| A．Ineffective. | B．Unnecessary. | C．Expensive. | D．Dangerous. |
| A．It has a wider range of applications. |
| B．It is a relatively traditional approach. |
| C．It can solve the problem once and for all (一劳永逸). |
| D．It is more costly than using ice-prevention chemicals. |
| A．The Advantages of Using Wind Energy |
| B．Drones Protect Wind Turbines From Icing |
| C．Wind Turbines Remove Ice on Their Own |
| D．A Major Breakthrough in Drone Technology |
Xu Xiake was born in 1587.
China has more famous explorers. There was: Zhang Qian, who traveled into Central Asia during the second century BC, opening a trade road that became
“On the surface, Xu’s travels can neither be classified as great affairs of state
Scholar Julian Ward agrees, describing the lonely Chinese wanderer like the Middle Kingdom’s version of John Muir: “Deep in love with nature and eager to find freedom
“The few coins
8 . Given the excitement it has created, there’s a good chance that you’ve heard about ChatGPT. It’s a powerful, new artificial intelligence tool, which can do a lot of things such as answering a question, explaining a concept, composing an email or writing a college essay, all in a matter of seconds.
“The essay, in particular the college essay, is dead,” said Edward Tian, a student at Princeton University. “For generations, we have been taught how to research, think, and write. That entire tradition is about to be completely changed.”
Despite having studied AI, Edward, like the rest of us, was so shocked by the power of ChatGPT that he couldn’t shake thoughts about the challenges presented by the AI tool. Then he had an idea. What if he applied what he had learned over the last couple of years to help the public identify whether something has been written by a machine?
On January 2, Edward released his app, GPTZero.
It basically uses ChatGPT against itself. To determine whether an essay is written by ChatGPT, GPTZero uses two indicators: the familiarity of text and the variations of sentences. If the text is very familiar to GPTZero — because ChatGPT has also been trained on such data — then it’s more likely to be AI-generated.
Separately, GPTZero compares the variations of sentences. Humans tend to write with greater varieties, for example, with some longer or complex sentences alongside shorter ones. AI sentences are usually less varified.
Edward isn’t trying to stop ChatGPT in its tracks. He believes that’s impossible, and opposes blanket bans (禁止) against the use of ChatGPT, like the one recently announced by New York City public schools. Students, he believes, will use the technology anyway.
“GPTZero is not meant to be a tool to stop these technologies from being used,” he said. “But with any new technology, we need to be able to use it responsibly and we need to have safeguards.”
1. What does Edward Tian think of ChatGPT?| A．It is very harmful to the society. | B．It is a powerful and perfect AI tool. |
| C．It might cause problems for educators. | D．It can share the burden with students. |
| A．It has longer sentences. | B．It contains more familiar words. |
| C．There are more difficult words. | D．There are fewer changes of sentences. |
| A．Wait and see at first. | B．Use them responsibly. |
| C．Put them under strict control. | D．Accept them as early as possible. |
| A．GPTZero, a Safeguard Against ChatGPT |
| B．GPTZero, a Necessary Helper for Students |
| C．ChatGPT, a Huge Threat to College Students |
| D．ChatGPT, a Promising AI Tool in the Future |
1. Why does the speaker suggest making a list in advance?
| A．It can help you join a group. |
| B．Many parties ask people to do this. |
| C．You can show it to others at the party. |
| A．Keep silent. | B．Leave immediately. | C．Take a deep breath. |
| A．They also feel shy. |
| B．They can overcome shyness completely. |
| C．They can not face the cameras and the public. |
| A．2. | B．3. | C．4. |
1. What color are the trousers the woman wants to buy?
| A．Pink. | B．Black. | C．Brown. |
| A．Spring. | B．Summer. | C．Winter. |
| A．A white sweater. | B．A purple coat. | C．A cotton jacket. |
