What it does
The self-cleaning door handle is combining with advanced photocatalytic(光催化) and blacklight technology. A light source activates the door’s handle coating, telling it to start cleaning. It can reduce the risk of infection by contact and improve the cleanliness of a space.
How it works
The working principle of the product is that a thin advanced photocatalytic coating can effectively remove bacteria(细菌) on the surface of a substance.A consistent UV light source inside a transparent glass door handle is required to activate the door’s handle coating on the outer surface for disinfection, so a generator is used to provide electricity to light up a UV LED lamp by the motion of an opening and closing door. Then, the door handle can clean by itself.
Design process
We made the first version by using stainless steel(不锈钢).However, it caused the door handle to be heavier. Then, we tried aluminum (铝), which made it light and easy to fix. We also improved the generator output which effectively turned energy from door movement into a light source.
How it is different
Our innovative(革新的) design is simple,effective,and attracive. It has an elegant smooth shape, and its minimalist appearance stands out in today’s world of inventions. Nowadays, people use chemical cleaning materials to clean up public areas but it harms the human body. Our design can be used for a long time and is effective. It can self-clean after each use. In the door lock and door handle market, it is a unique design because there are no similar products.
Future plans
In the future, we will commercialize the product and hope that it can compete on the market with similar products. We are going to connect with public properties, for example, shopping malls, hotels, hospitals and public restrooms, where the risk of spreading infection is higher.
1. How does the self-cleaning door handle function?| A．It controls the door movement automatically. |
| B．It minimizes the risk of infection by less contact. |
| C．Chemical cleaning materials are used to clean it up. |
| D．The light source tells the door handle coating to clean itself. |
| A．safer and cheaper | B．cleaner and easier |
| C．less heavy and more effective | D．more attractive and expensive |
| A．It has been widely used in public areas. |
| B．It is quite competitive among similar products. |
| C．It has received positive comments for its innovation. |
| D．It will replace traditional chemical cleaning materials. |
| A．They will develop the product. |
| B．They will put the product on the market. |
| C．They will send the product to some public places. |
| D．They will carry the product to the places with higher risk of spreading infection. |
相似题推荐
【推荐1】Welcome to BritainUSA. com 4 Kids！
Perhaps you are here because your child has been asked by his or her teacher to do a project on Britain. Or maybe you and your child simply want to learn more about all things British.
Well，good news：This site is here to help.
※For instance，we have a section devoted to British History & Geography. Kids will learn that Britain has not been invaded since the Normans came from France in 1066，but it was invaded many times before that. And that the invaders included groups like the Celts，Romans Anglo-Saxons and，yes，the Vikings!
※If they are looking for photos (and kids love photos)，we have a picture gallery on the 4kids site. There are pictures from England，Scotland，Wales and Northern Ireland as well as images of London，the Royal Family and castles.
※Kids can also find out about the many differences between British English and American English. Words are used differently of course，and many English words have different meanings in Britain or are unique to British culture. Kids should check out our glossary of British terms.
※We also have information about Pen Pals. And scouts might want to visit our section on the Citizenship in the World Merit Badge. It includes information on how to write to the Embassy.
※We also have sections on British sports and about life in Britain. How is life different for kids in the United Kingdom？These and other questions can be answered by using the 4kids site，the main Britain USA site，and our Frequently Asked Questions.
Enjoy the site and we hope you and your kids learn a lot. If you have any comments or suggestions about BritainUSA or BritainUSA 4Kids，please use our feedback form. We'd welcome your input.
Cheers!
1. We can see that BritainUSA. com 4Kids is designed to help us___.| A．understand British history better |
| B．have a better understanding of American culture |
| C．improve our English |
| D．have a better understanding of Britain |
| A．Helen, who wants to see pictures of British royal families. |
| B．Daniel, who wants to know about British football teams. |
| C．Alisa，who is choosing an ideal college in Britain. |
| D．Philip，who is looking for a pen pal in Britain. |
| A．picture gallery |
| B．frequently asked questions |
| C．glossary of British terms |
| D．feedback form |
| A．A list of technical or special words |
| B．Some comments |
| C．Some suggestions |
| D．A piece of advice |
| A．children | B．teachers |
| C．parents | D．children experts. |
【推荐2】Is it possible to build muscle and meanwhile lose fat?Please allow us to bring the following two facts to your attention first.
Fact 1：Losing fat requires a caloric deficit(亏损)，which means consuming less calories than your body needs so that stored body fat is used for energy instead.
Fact 2：Building muscle requires a caloric surplus(盈余)，which means consuming more calories than your body needs so that new muscle tissue can be created.
And it’s this realization that leads those of us who want to build figure and lose fat ideally at the exact same time to wonder just how we’re supposed to make it happen?
The 4-week Online Workout Course professionally designed by Super Fitness will perfectly resolve the conflict，making it possible for you to both build muscle and lose fat.
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●Eagerness for a perfect figure.
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Contact Super Fitness by clicking here!
1. What’s the purpose of mentioning the conflict of building muscle and losing fat?| A．To bring out the course. | B．To clear confusion. |
| C．To stress importance. | D．To warn the danger. |
| A．2. | B．4. |
| C．6. | D．8. |
| A．A newspaper. | B．A website. |
| C．A fitness book. | D．A biology magazine. |
【推荐3】In an era where digital innovation is reshaping every aspect of our lives. the world of reading has not been left behind. A large number of apps have appeared to meet the diverse preferences of readers, each with its unique features and large collections of content.
※ Media 365Media 365 is a free reading app for Android that lets you read all of the books in its library. Authors can self-publish on the Media 365 platform, but there are also a large number of popular published books available, like the Harry Potter book series.
※ Hoopla DigitalCheck out the Hoopla Digital app, another excellent app making use of your kid’s library card. It’s great for all ages, giving kids the ability to borrow free digital eBooks, audiobooks, plus music and other media available (可获得的) in your local public library. It’s no wonder it’s one of the top 15 book apps in the App Store.
※ ComiXologyComiXology is one of the oldest and most popular services for reading comic books digitally. The ComiXology online store, now owned by Amazon, offers thousands of new and classic comic books from major publishers like Marvel, DC Comics, and Image Comics.
※ Literal: An Addictive ReaderWhat makes ‘Literal: An Addictive Reader’ such a cool reading app for young people aged 10 to 19 is that it offers both classic titles along with new er books and turns the format into something Gen Z. knows well: Group Chats. Kids can read books together with their friends in a book group, which is easy to use through the Literal app.
These apps not only make reading more accessible and convenient but also enrich the reading experience with features that appeal to different people and interests. As digital technology continues to advance, these apps lead the way in changing how we find, get, and enjoy books and media. This ensures that the excitement of reading remains strong in the digital age.
1. What is special about Media 365?| A．It is owned by Amazon. | B．It features classic books. |
| C．It is only available on iPhones. | D．It allows writers to self-publish their works. |
| A．By using a library card for borrowing digital media. |
| B．By providing a platform for purchasing new books. |
| C．By offering professional book editing services. |
| D．By charging for each eBook and audiobook. |
| A．Media365. | B．ComiXology. | C．Hoopla Digital. | D．Literal: An Addictive Reader. |
| A．It is the No. 1 app in the App Store. | B．It has a wide collection of audiobooks. |
| C．It supports reading books through group chats. | D．It offers free digital content with a library card. |
| A．To make reading easier and suit different likes. |
| B．To provide a platform for playing video games. |
| C．To focus on publishing and selling physical books. |
| D．To create social media platforms for book discussions. |
【推荐1】The walking, park-touring, and dancing robots made by Boston Dynamics have been darlings of the internet for years, as they danced from labs to Softbank and most recently Hyundai, while owners tried to figure out how to get them off the dance floor and into the factory. Michael Graham Richard showed the family of robots doing all kinds of things a few years ago, but this new video that starts off with two Atlas robots is just amazing. It's designed to assist emergency rescue (紧急救援) workers in search-and-rescue operations, performing tasks such as shutting off gas, opening doors, and operating powered equipment in environments where humans cannot survive.
But Atlas has never really been out of the lab. In fact, very few of Boston Dynamics robots have been used for work. But after they were bought by Japanese investor Softbank in 2017, they had to go out and get a real job, and Spot, who also dances in the video is the first commercial offering. There are about 400 of them out in the field now. You can buy one for $75,000 and use it as a platform for many different functions (功能), from checking for gas leaks to working for bomb groups, although that did not work out too well. But with that robotic arm option, it looks like it might be able to bring you coffee.
The last robot to join the dance party was Handle, which looked less impressive because of its use of wheels instead of legs. Now that it has been sold to a real manufacturing company, we can probably expect Hyundai to pay off the money to make real working, instead of dancing robots.
1. Why are Atlas robots amazing?| A．They can protect the environment. | B．They can do dangerous work. |
| C．They can walk into factories. | D．They can dance very well. |
| A．It just exists in the video. | B．It is developed by Softbank. |
| C．It is the first one to go into market. | D．Its single function makes it less attractive. |
| A．It has two flat feet. | B．It moves by wheels. |
| C．It can't bring you coffee. | D．It assists emergency rescue. |
| A．Develop new robots. | B．Pay off Hyundai's debts. |
| C．Make people entertained. | D．Do some practical jobs. |
【推荐2】According to a recent report, in the US alone, 27 million tons of plastic ended up in landfills in 2018, but only 3.1 million tons were recycled. Worldwide the numbers are similarly bad, with just 9% of plastic being recycled. The statistics (统计数字) are even worse for certain types of plastic. For example, out of 80,000 tons of polystyrene (聚苯乙烯) containers produced in the United States, only a small amount (less than 5,000 tons) was recycled.
Now, researchers at The University of Queensland have found a species of worm with a taste for polystyrene could be the key to plastic recycling. The superworm can eat through polystyrene, thanks to a bacterial enzyme in their gut. To study how superworms react to purely plastic food, researchers broke up 135 of the creatures into three teams: one was fed only wheat bran, another was fed only plastics, and the third was given nothing.
“We found the bran-fed worms have been significantly healthier than the plastic-fed or hungry worms, more than doubling their weight over the three weeks they have been observed. Though the plastic-fed worms made less impressive gains, they still put on more weight than the hungry worms,” Dr. Rinke said. “This suggests the worms can get energy from plastics, most likely with the help of their gut microbes (微生物).”
Researchers used a technique called metagenomics to find several encoded enzymes with the ability to reduce polystyrene. The long-term goal is to engineer enzymes to reduce plastic waste in recycling plants.
“Superworms are like mini recycling plants, eating the polystyrene and then feeding it to the bacteria in their gut,” Dr. Rinke said. It’s hoped this bio-upcycling will promote plastic waste recycling and reduce landfills. Researchers said they aim to grow the gut bacteria in the lab and further test its ability to reduce polystyrene. Then they can look into how to improve this process to a level required for an entire recycling plant.
1. What problem do the statistics in paragraph 1 indicate?| A．Landfills are poorly managed. |
| B．Plastics are recycled at a very low rate. |
| C．Many plastic containers are of poor quality. |
| D．It takes a long time for plastic waste to break up. |
| A．By collecting data. | B．By making a comparison. |
| C．By introducing a concept. | D．By referring to a previous study. |
| A．Plastic-fed worms had a decline in weight. |
| B．Superworms showed little interest in wheat bran. |
| C．Superworms could survive on only eating polystyrene. |
| D．Bran-fed worms had a longer lifespan than plastic-fed worms. |
| A．Conduct experiments on other worm species. |
| B．Improve gut bacteria’s ability to reduce plastics. |
| C．Apply the bio-upcycling technology to recycling plants. |
| D．Raise superworms in a big way to solve plastic pollution. |
【推荐3】Brooke wanted a dollhouse and some sugar cookies. So the 6-year-old asked Alexa to get them. Alexa wasn’t her mom or babysitter. It was voice-activated home assistant powered by artificial intelligence (AI). Alexa comes with the Amazon Echo device. And it made Brooke’s wishes come true. A few days later, much to her parents surprise, a $170 dollhouse and four pounds of cookies showed up.
Alexa is not the only AI willing to order up treats for you. Apple HomePod has Siri, Google Home has its Assistant, and the upcoming Galaxy Home device will have Bixby. People who own these devices use them mainly for listening to music, checking the weather, and setting timers. According to a report, voice shopping is rare. People who do it mainly order simple things like paper towels. But many experts predict a boom in voice shopping in the near future.
But voice shopping has its downsides. Unwanted dollhouses aren’t the biggest problem. It’s usually very easy to cancel an order or return items. The thing that creeps some people out is that these assistants are always listening. They have to be able to respond when you want them. So they listen to for “Alexa” or “OK Google” or another command. When they hear it, they start recording the conversation. Some have worried about what happens to these recordings. Should companies be allowed to use them to learn about people’s shopping habits? Should police access them to solve a crime? What if someone hacks the device?
What do you think? Are you ready to start voice shopping?
1. From the passage, we can learn that Alexa is ________.| A．an AI device for cleaning | B．an AI device for shopping |
| C．an AI device for speaking | D．an AI device for fixing |
| A．It is difficult to return the goods you buy by voice shopping. |
| B．It is very popular for young people to use voice shopping now. |
| C．It is possible for people to use voice shopping device widely in the future. |
| D．It is Alexa that is the only voice shopping device mentioned. |
| A．Doubtful. | B．Supportive. | C．Subjective. | D．Negative. |
| A．A Common Shopping Way | B．A Creative Shopping Way |
| C．A Traditional Shopping Way | D．A Popular Shopping Way |
| Sonoma Bike Tour Start and end in San Francisco! With the bicycle tour Sonoma Bike Tour, you have a 6-day tour package taking you through San Francisco, USA and 3 other destinations (目的地) in USA. AGE RANGE 12 to 80 MAX GROUP SIZE 14 TRANSPORTATION Bicycle Days: 6 Our saving: $108 From US $ 2,587 |
| California Cruzin’ Hub Tour Start and end in Los Gatos! With the bicycle tour California Cruzin’ Hub Tour, you have a 6-day tour package taking you through Los Gatos, USA and 5 other destinations in USA. AGE RANGE 14 to 80 MAX GROUP SIZE 12 TRANSPORTATION Bicycle, Mini-bus Days: 6 Our saving: $103 From US $ 2,477 |
| Sonoma & Napa Valley Bike Tour Start and end in San Francisco! With the bicycle tour Sonoma & Napa Valley Bike Tour, you have a 6-day tour package taking you through San Francisco, USA and 4 other destinations in USA. AGE RANGE 12 to 80 MAX GROUP SIZE 14 TRANSPORTATION Mini-bus Days: 6 Our saving: $120 From US $ 2,875 |
| Death Valley Bike Tour Start and end in Las Vegas! With the bicycle tour Death Valley Bike Tour, you have a 6-day tour package taking you through Las Vegas, USA and 7 other destinations in USA. Death Valley Bike Tour is a small group tour that includes accommodation as well as an expert guide, meals, transport and more. AGE RANGE 12 to 80 MAX GROUP SIZE 15 TRANSPORTATION Mini-bus Days: 6 Our saving: $122 From US $ 2,875 |
| A．Sonoma Bike Tour. |
| B．Death Valley Bike Tour. |
| C．California Cruzin’ Hub Tour. |
| D．Sonoma & Napa Valley Bike Tour. |
| A．It starts and ends in San Francisco. |
| B．It provides accommodation and meals. |
| C．You can travel to at most 7 destinations. |
| D．Anyone aged 10 to 80 can take part in the tour. |
| A．Destinations. | B．Transportation. |
| C．Group size. | D．Time length. |
【推荐2】Listed below are some of the classic local hiking challenges. Most of these hikes are along the Long Trail (路径),the oldest long-distance hiking trail in the United States: initiated in 1910.
SUNSET LEDGE 2924’ 2.2 MILES
Perfect for kids.Popular! Park at the lop of Lincoln Gap and head south on the long Trail. Views over Addison County to Lake Champlain and the Adirondack range. About an hour round trip, plus the time you spend enjoying the view.
GENERAL STARK 3662' 3.2 MIlES
A local's favorite with fantastic views.Start from the App Gap and head South on the long Trail up steep Stark's Wall all and follow the Long Trail to the Stark's Nest Shelter at the top of the Single Chair. Or start from the Mad River Glen ski area and hike the service roads up to the same spot. About 3 hours round trip.
CAMEL'S HUMP 4080' 7.4 MILES
This most challenging 7.4 miles round trip hike takes you above the trees to Vermont's highest undeveloped peak. Spectacular views and an unparalleled feeling of accomplishment. Budget 5 hours. About a 40 minutes drive from the Mad River Valley to railhead either in Duxbury or in Huntington.
MT.ABRAHAM 4000' 5.2 MILES
This is a 4-hour hike if you are a normal human being and the views are spectacular. Mt.Abr is one of Vermont's 5 peaks over 4000’, with 360° panoramic views. Part of the Monroe Skyline Park at Lincoln Gap and head North on the Long Trail. If you hike in the summer, hike down Upper Jester and ride the Super Bravo chair to Sugarbush base area.
TO ENSURE A GREAT HIKE
These hikes are challenging: do not underestimate the journey. Be prepared. Always bring a good, printed trail map; Map Adventures is the best (at The Tempest Bookshop or local gear shops). Trail markers are not always visible and estimated hiking time is based on fit individuals. Always wear hiking shoes, carry a backpack with more water than you think you will need, some calorie-rich foods, and a flashlight; bring an extra layer for warmth or rain. Sunscreen might be a good idea depending on the season.
1. Which trail are professional hikers most likely to go to?| A．Sunset Ledge | B．General Stark |
| C．Camel's Hump | D．Mt.Abraham |
| A．go to a local gear shop. | B．bring extra clothes in case. |
| C．invite a friend to go with you. | D．wear more sunscreen than necessary. |
| A．A Journey along the Long Trail. | B．Magnificent views. |
| C．A more than 3 hours' trip. | D．A kids-friendly trail. |
【推荐3】Would you like to travel? Here is some advice for you.
Kingsway Hall Hotel
We offer quality service in Kingsway Hall Hotel. This location puts guests in easy reach of many places, such as the British Museum and Piccadilly Circus. Our hotel also has modern Western food, and offers a perfect dining environment. The lounge bar is a comfortable place to enjoy a drink while watching the tourists. There are hundreds of dining choices within walking distance. Non-smoking rooms are ready for guests.
Hilton Docklands Riverside
Located on the bank of the Thames, our hotel is about two miles east of Tower Bridge and 36 miles from London Heathrow Airport. Our hotel has a beauty salon, a flower shop and a swimming pool. The hotel also offers laundry(洗衣店) services, babysitting, shining shoes, and local area transportation.
Windermere Hotel
Located in the center of London, our hotel puts guests within easy reach of London’s well-known buildings. Buckingham Palace and the Royal Parks are just a short walk away. Within 1.5 miles you can visit Westminster Abbey and the Houses of Parliament. The theatres, Harrods shopping centre, and the designer shops of Sloane Square and Knightsbridge are all only a short walk away or a taxi ride away.
1. What does Kingsway Hall Hotel provide for its guests?| A．Chinese food. | B．A lounge bar. |
| C．Smoking rooms. | D．A swimming pool. |
| A．It has delicious food. | B．It offers a reasonable price. |
| C．It offers different kinds of service. | D．It is about two miles from London Heathrow Airport |
| A．a storybook | B．a travel guide |
| C．a technical report | D．a fashion magazine |
