4 Trails(小径) to Explore in Washington, DC
Klingle Valley Trail
This trail is just under a mile in length, but makes for a scenic ride or walk at any time of year. Completed in 2017, the trail now serves as an ideal place for nature lovers. Some notable features of the trail include its permeable pavement(可渗透的路面), which prevents rainwater runoff, its connection to the Tregaron Conservancy paths and trail network, and its wonderful view of the Connecticut Avenue NW Bridge.
Mount Vernon Trail
This 18-mile trail is perfect for an extended ride, especially due to the fact that it provides breathtaking views of DC. The stretch across the Arlington Memorial Bridge is particularly scenic. We highly recommend a stop at Gravelly Point, too; you'll be able to watch planes take off and land at Reagan National Airport.
Metropolitan Branch Trail
Known as "MBT" to locals, this 8-mile trail is known for its eye-catching wall paintings that run parallel(平行的) to you as you ride, especially in NoMa. Additional sites to check out include The Dew Drop Inn, which is housed in a rural building that used to be a workspace for metalworkers. If your bike is in need of a tune-up, head to Gearin' Up Bicycles, which also teaches essential skills to city youth.
Capital Crescent Trail
One of the most trafficked trails in the nation, the 11-mile Capital Crescent Trail is a major commuter(通勤者) route. Potomac River views are plentiful; we highly suggest a few stops for photo-taking. Georgetown Waterfront Park is another option for a stop; you can enjoy views of the John F. Kennedy Center for the Performing Arts and the Francis Scott Key Memorial Bridge.
An injured hiker was rescued earlier this month after a train passenger spotted her from the window. She was crazily waving on the other side of a river, having just spent two days trapped in the wilderness with a broken leg.
The rider told the train crew, who then reported it to the train inspector, Henry Smith, who was in a motor car behind them. Henry was able to stop and communicate with the woman on the opposite bank of the river, which was freezing cold and moving quickly.
The hiker, a woman in her twenties, had been missing for two days. She said she'd intended to go on a day hike, but ended up falling 90 feet down a cliff face while trying to take pictures. She reportedly told rescuers that she lost consciousness for an unknown amount of time. Despite a badly broken leg, she struggled to pull herself to the bank of the river to try to flag down trains. She had no emergency supplies with her, or suitable clothing to spend the night outdoors. There had been a cold attack while the woman was trapped in the wilderness. The hiker described spending daylight hours trying to get the attention of passing trains and, at night, would roll herself into a nearby cliff face in an attempt to stay warm.
Henry called to request help for search and rescue. The operator who received the emergency call said the hiker's family had been looking for her. While they were waiting for the rescue team, Nick and Kylah, an engineer and a fireman on the next train passing by the location, came to help. 327 passengers on the train waited on the track as they crossed the river to examine the woman's injuries and bring emergency supplies, blankets and a radio for communication. Eventually, a helicopter was sent to locate and rescue the hiker and she was transported safely to the hospital.
Nearly 10 million people worldwide live with Parkinson's disease. While Parkinson's is incurable, some of its worst symptoms(症状) can be relieved and controlled using medications. A major problem of getting effective treatment at the right time is identifying the disease soon enough, before patients experience the symptoms brought on by irreversible neuron loss(不可逆转的神经元丢失).
But scientists might have just the thing to change the situation. And it involves a nose. In a study published in the journal ACS Omega, researchers from China's Zhejiang University created an "e-nose," a portable device that can detect body smells specific to Parkinson's patients.
It may come as a surprise to learn Parkinson's patients have their own smells. But after a retired nurse in Scotland made headlines in 2015 for a heightened sense of smell that led to her own husband's Parkinson's diagnosis, scientists have been trying hard to create a device that could smell the disease before physical symptoms start to show.
Over the years, scientists have found people with Parkinson's tend to produce more sebum(皮脂) than the average person. This sebum mixes with other overproduced substances to produce certain, unique smells.
To track down these smells, the Zhejiang University researchers swabbed(用拭子擦拭) the upper back of 31 Parkinson's patients and 32 healthy volunteers. Using machine-learning software, they were able to identify three smell compounds(化合物) that healthy volunteers lacked. The researchers then tested the e-nose on sebum taken from 12 Parkinson's patients and 12 healthy people. The device was found to be about 71 percent accurate in distinguishing healthy sebum from Parkinson's sebum.
These are encouraging findings, but before the e-nose is ready for clinical use, the team needs to test it on many more people to improve the accuracy of the models. They will also need to test whether factors like race affect the e-nose's performance in any way. But for now, as the number of people living with Parkinson's in the U.S. is expected to rise to 1.2 million by 2030, a nose might be the best option to detect this disease.
Across the gardens of Britain, in cities and suburbs, people are building sheds(工棚). "We have never seen such an increase in orders," says Paul Deary of the Garden Shed Company, whose family has been in the business for 35 years. "People have gone shed crazy." The Timber Trade Federation reports that in October, the last month for which statistics are available, imports of softwood were 34% higher than a year earlier. With stocks(存货) running low, what wood is available is quickly sold out.
A garden shed used to be mostly a place to store tools, or a place to discuss how to grow flowers, and enjoy tea and snacks while the rain falls outside, according to Michael Rand, an expert gardener. But the creative brainworker has long put it to more productive use. Roald Dahl and Dylan Thomas wrote in sheds. George Bernard Shaw had one in his Hertfordshire garden that faced the sun.
The structures now being built are also often intended for work, although they are grander than the ones those pioneer shed-writers used. Green Retreats, which mostly builds garden offices but also garden gyms and the like, says that overall sales grew by 113% between 2019 and 2020. Larger, prettier structures with things like white walls are especially popular.
This has an important effect on cities. Urban scholars like Richard Florida and Edward Glaeser are busy trying to work out whether the rise in home-working that has occurred during COVID-19 will continue when the virus ebbs. If it does, many service jobs in cities, from waiters to taxi drivers, will disappear. Public-transport systems will struggle. The value of city-centre property will drop.
The shed craze makes that outcome more likely. A white-collar worker who has tried to work from the kitchen table for the past nine months might be keen(渴望的) to return to the office. A worker who has a beautiful garden shed with Wi-Fi will be less so. Joel Bird, who builds personalized sheds, is certain that his customers foresee a long-term change in their working habits. "They don't consider it to be temporary," he says. "They're spending too much money."
The oral exam (口试) is a long-held tradition in many schools and subjects. Students must then answer properly, using materials they have learned in preparation for the exam. Showing plentiful knowledge of the subject results in passing the exam or an excellent grade.
As part of the completion of a program at the undergraduate or graduate levels, students might need to prove their knowledge and understanding of a subject area. Many science majors finish Bachelor's studies with oral exams, or a particular program may require oral and written exams that show how a student has taken in all the materials learned in a four-year period. Usually study guides are available for these exams.
One valuable tip for students to succeed is to practice before the exam. But by answering questions classmates or family ask them students can do as many practices as possible. On the day of the exam, students should dress plainly but respectfully, and in keeping with any dress requirements.
Students taking these exams should remember how much they have learned, which is hopefully quite a lot. When waiting outside the test room, taking a deep breath and reminding themselves that the oral exam is a nice way to show off how much knowledge has been learned from teachers can help overcome stressful moments. Also, any other relaxation techniques that help can be used.
A. It raises questions to students in spoken form.
B. Behaving properly can earn students some favor.
C. They may not be able to predict all the questions.
D. Usually, students performing well are experienced.
E. Nervousness can even make the smartest student get stuck.
F. There are many examples in college where oral exams are used.
G. Therefore, prepared students tend not to be surprised by what they're asked.
If someone had told me five years ago that I would be living happily on a small farm, I would have firmly denied the possibility. Back then, I was a 1 city girl. Then my husband and I 2 to move from our longtime home. We 3 houses in several surrounding communities, but nothing 4 our needs or our budget.
One day, while we were checking my mother's 5 for her, I looked around, liked what I saw and asked my husband, "Why don't we build a house here?" To my 6 , he said, "Yes!" And so 7 a new and very 8 chapter in our life story.
When we started our new life on the farm, it was in a mess. My husband and I set out to 9 the land. We pulled down dead trees and planted vegetables and flowers.
We soon realized the land had 10 us during our efforts to develop it. We've learned to recognize nature's cycles instead of following clocks, calendars, schedules and to-do lists. We enjoy the 11 of days into nights. Our timeless life allows us to 12 sunrises and sunsets – each a unique, spectacular(壮观的) sight that cameras can only 13 catch.
We open our doors to family and friends. Those who 14 and opposed our decision now feel the magic of the peace and are 15 to leave.
I am a specially trained clown(小丑) who works as part of a programme known as "hospital clowning". As I approach the hospital (wear) my white coat, I look just like any other doctor. That is until I put on my curly rainbow wig, big red nose, and add my name badge "Doctor Larry Laugh-Out-Loud". I walk through the doors into the waiting area, where there's familiar atmosphere of boredom and tension. People sit uncomfortably on plastic chairs, looking through old magazines, all of which have been read hundreds of times (previous). Anxious parents do what they can (comfort) nervous and crying children. the middle of this particular scene I spot a small girl ankle is twice its normal size. I speak with the on-duty nurse, who tells me that Lara's parents rushed (she) to the hospital after she fell off her bicycle. Since getting here, Lara (spend) her time crying in pain.
Although it's the doctors and (nurse) who will treat her injury, I know it's my job to make her feel better. After all, there are (science) studies which show that "laughter is the best medicine".
, a great number of houses are being built at present in the disaster area.
that a good learning habit can help us to speed up to reach our destination.
Not until we experience in person that the world is not as pure and simple as we think.
nothing to do, the workers went home.
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A Meaningful Charity Sale
