1 . It was 8:30 am. Traffic was at ______ flow. For ten minutes I watched an elderly lady looking ______ at the traffic, waiting to cross a four-lane road. Her wide blue eyes scanned for a ______; there was fear in them.

An untidy boy of ten ______ her and said a few words. She smiled with surprise and ______ her head. They were strangers to each other, but the ______ in each was obvious.

The boy turned to the traffic, holding the old lady’s hand, and I ______ his little smile-he was helping. The traffic ______, and a gap appeared. Both said “now!” and stepped out, leading each other.

The old lady glanced around, determined to ______ her young charge. The boy held her hand, ______ the old lady gently and safely. As they ______ mounted the sidewalk on the other side, their ______ was evident.

The old lady safely ______ the boy to the other side, pretending to let him help. The young boy safely got the woman across, pretending to let her help.

I watched with a lump in my throat and a(n) ______ in my eye, and I didn’t know why this was so. . for I was smiling. I was unable to describe this beautiful ______. The two turned to each other and shook hands before parting.

2 . Scientists looking to uncover the mysteries of the underwater world have more valuable information thanks to an international team that has produced a list of species confirmed or expected to produce sounds underwater.

Led by Audrey Looby from the University of Florida, the Global Library of Underwater Biological Sounds working group collaborated with the World Register of Marine Species to document 729 mammals (哺乳动物), fishes, and invertebrates (无脊椎动物) that produce active or passive sounds. In addition, the list includes another 21,911 species that are considered to likely produce sounds.

“With more than 70% of the Earth’s surface covered by water, most of the planet’s habitats are aquatic, and there is a misconception that most aquatic organisms are silent. The newly published comprehensive digital database on what animals are known to make sounds is the first of its kind and can revolutionize marine and aquatic science,” the researchers said.

“Listening to underwater sounds can reveal a lot of information about the species that produce them and is useful for a variety of applications, ranging from fisheries management, invasive species detection to assessing human environmental impacts,” said Looby, who also co-created FishSounds, which offers a collection of fish sound production research records.

The team’s research was published in Scientific Data and involved 19 authors from six countries. “Understanding how marine species interact with their environments is of global importance, and this data being freely available is a major step toward that goal,” said Kieran Cox, a member of the research team.

“Most people are familiar with whale or dolphin sounds but are often surprised to learn that many fishes and invertebrates use sounds to communicate, too,” Looby said. “Our database helps demonstrate how widespread underwater sound production really is across a variety of animals, but we still have a lot to learn.”

3 . Every day, people share more than 2 billion photos on the Internet. While visual content provides a fun and expressive way for people to communicate online, consuming and creating it poses challenges for people who are blind or severely visually impaired (受损的). With more than 39 million people who are blind, and over 246 million who have a severe visual impairment, many people may feel excluded from the conversation around photos on the Internet. The researchers from Harvard University want to build technology that helps the blind community appreciate photos in the same way others enjoy them.

Automatic alternative text is a new development that generates a description of a photo using advancements in object recognition technology. People using screen readers on digital devices will hear a list of items a photo may contain as they click photos on the Internet. Before today, people using screen readers would only hear the name of the person who shared the photo, followed by the term “photo” when they came upon an image. Now they can offer a richer description of what’s in a photo thanks to automatic alternative text. For instance, someone could now hear “an image containing three people, smiling, outdoors”.

This is possible because of Harvard University’s object recognition technology, which is based on a network that has billions of parameters and is trained with millions of examples. Each advancement in object recognition technology means that the researchers will be able to make technology even more accessible to more people. When people are connected, they can achieve extraordinary things as individuals and as a community, and when everyone is connected, we all benefit from it.

They are launching automatic alternative text first on cellphone screen readers set to English, but they plan to add this functionality for other languages and platforms soon. While this technology is still nascent, using its current capabilities to describe photos is an important step toward providing our visually impaired community with the same benefits and enjoyment that everyone else gets from photos.

4 . The COVID-19 pandemic has changed everyone's daily life. While our experiences were ________, there's one thing many of us had in common: quarantine (隔离期) hair.

Salons (美发厅) were closed for months, but our ________ didn't stop growing. So my 12-year-old daughter, who needed a haircut even before the quarantine, ________ to do something good with her hair. She planned to donate (捐赠) it.

We had ________ donating her hair before, so she ________ that it needed to be a certain length. “Maybe someday,” she said.

And I wasn't surprised when she said she was ________ with her hair having grown ________ enough to both meet the donation requirement and leave her with a shoulder-length haircut during the quarantine.

When the salon finally ________ again, my daughter sat ________ in the chair and talked to the hairdresser. She mentioned how great it was that she could ________ someone else just by cutting her hair. Listening to their conversation, I wondered when my daughter had become so mature (成熟的).

Any ________ I had that she would regret her decision disappeared as I watched the hairdresser hand her the first ponytail (马尾辫). She was ________ and looked at it in excitement.

She wanted a ________, and she got it. I went into that salon with my little girl. I ________ with a young lady and a bag filled with the hair.

Days later, as we stood in line at the post office to mail her hair, I looked at my daughter and felt ________ of the kind and thoughtful young lady she'd become.

6 . I had no idea that the Boulder International Film Festival (BIFF) existed (存在) until I went to the University of Colorado (CU) Boulder club fair with my best friend in September. There was a stand that was run to find volunteers for the festival in the spring, and I signed up. I wasn't quite passionate (狂热的) about films but just wanted to do some volunteer work.

The first volunteer shift I had was before the festival started, and I got to organize all of the passes needed for the festival, including those of all the volunteers, sponsors, filmmakers, and VIP members. I even managed to get a picture of myself and Ale c Baldwin's pass.

During the festival, I worked as a vaccine (疫苗) checker, checking people's vaccination cards and giving out wristbands since BIFF required everyone to be vaccinated to enter the many halls. This job-wasn't terrible, except for the fact that we were outside most of the time and it was snowing. By the end, I could hardly feel my feet, but I kept in high spirits.

After finishing my volunteer work, I was able to see a few films for free. Besides some short films, I really enjoyed “The Last Mountain,” a documentary about the life and death on a mountain in 2019 of the British climber, Tom Ballard, and the mountaineering history of his family. While I was crying throughout most of the movie, it was an inspiring story about love and passion.

I really enjoyed my time at BIFF. It was well-organized and everyone working for the festival was passionate about making it a great experience for everyone alike. Next year, I hope to invite some of my friends to volunteer with me, or at least encourage them to watch a couple of amazing films!

7 . Mei Lum is the fifth-generation owner of Wing on Wo & Co. in Manhattan’s Chinatown.

For Lum, the oldest-running business in Manhattan’s Chinatown sees the neighbourhood growing larger and larger and is an informal living room where she came of age. In the store on Mott Street, she shared meals with her family, took Chinese lessons with her grandparents and helped clean the store as a young girl.

Wing on Wo was started in the 1890s. In the early days, Wing on Wo was a general store that mainly sold dried fish and canned (罐装的) goods. It was also an informal post office. When Lum’s grandmother, Nancy, took over in 1965, she decided to focus on porcelain (瓷器) specifically. Its heyday (全盛时期) was the late 70s to the late 80s. A lot of the goods came from Hong Kong, where Lum’s grandfather grew up.

In 2016, her grandmother planned to sell the porcelain specialty shop and its building. Lum, who was preparing to study international relations at Columbia University, decided to take over the store — not only to preserve (保护) its cultural value, but to create a community centre.

“I see the store as a place for conversation for Asian Americans. They want to learn about family history and tradition, and are curious about their cultural identity. I want them to learn about their identity through our porcelain,” Lum said.

Wing on Wo has remained a family business from its founding. Lum’s father, Gary, has been manning the counter (柜台) for the past 30 years. Her mother, Lorraine, processes orders and manages the website. Even her grandmother helps out with some work in the store.

The pandemic pushed Lum to start learning how to run an online store. She’s also added a lot of new activities, including youth programs, an artist residency and a ceramicist fair, to ensure that in addition to preserving tradition, the business is shaping the future of Chinatown.

Facial surgery (手术) is a serious business, especially on children     1     are not yet fully grown but Melbourne researchers are developing a technique that could change the face of children’s surgery.

This new     2     (develop) will allow doctors to work out a child’s normal face shape at different ages to predict (预测) future growth.

Researchers at the Murdoch Children’s Research Institute (MCRI) could soon replace the ruler currently     3     (use) to track changes in a child’s head and face with 3D images. By     4     (improve) the ability to predict normal growth and future changes in a child’s face, doctors will be able to    5     (well) complete their surgery than before.

MCRI’s Mr Harold Matthews said current     6     (method), including using patients’ photographs and X-rays were slow. Together     7     researchers in Belgium, Mr Matthews is pioneering a new tool that provides averages (平均值) for normal growth of the face throughout childhood.

The project intends     8     (take) some of the guesswork out of surgery. For example, in children with Pierre Robin Sequence, a serious condition which means they are born with an underdeveloped jaw(下颚), some doctors choose to fix it early while others wait to see if the child’s face will     9     (natural) correct itself as it grows. Without this new technology,     10     is difficult to know which method is better for each child.

9 . Ahmed was a middle-class businessman and used to go to his office in a car that he had bought seven years ago. Despite being _________ stronger than most of his co-workers, he was _________. Ahmed always wanted more than he had. Whenever he got into his car, he would start finding _________ with it, and drown in self-pity for being so poor.

One weekday, Ahmed left his home to go to his office. It was raining heavily. Ahmed drove _________, for he had to be careful with his _________ car. Then, a man on a motorbike grabbed his _________. The man was _________to keep the bike steady in the thunderstorm. Ahmed was _________ the fact that he was travelling safe and dry in his car. He said to himself, “I’m travelling _________ without getting affected by the rain, while this person is in serious difficulty. I am more __________ than him.”

The day passed quickly. When Ahmed drove back home, the rain had stopped. He saw a homeless man sleeping on the wet sidewalk.

Ahmed remained __________ that night, lost in deep thought. Happiness was around him, yet he always ________ about his life. Neither his car, his house nor status was depressing; what was saddening him was his __________. He knew he had to __________ his thoughts. That day, he __________ an important lesson — happiness comes from optimism!