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By the age of sixteen years old, Ben had always been an outstanding student. He went to great lengths to achieve high grades and managed to keep his parents delighted and proud. Neither of his parents had the opportunity to attend university and it was their biggest ambition that Ben could land a well-paid and decent job as a lawyer. He knew that achieving this goal would make his parents walk on air, but he wasn't certain whether he

would feel the same.

Since he was only a child, Ben had been passionate about computer programming. He taught himself how to use a computer, and by the age of 12, he had been proficient in three difterent programming languages. He did all of this in his spare time. He was quite an introvert(内向的人), so he preferred staying in with his computer, rather than going out socializing with his fellow classmates or playing sports in the brilliant sunshine. It was acceptable with his parents, as long as he continued to focus on his studies.

One day, while reading an article online about a young technology billionaire called Tom, Ben was fascinated by the magical power of technology and the wisdom and imnovation of the young CEO. The inner voice told him that he longed to become a computer programmer. Everything changed for Ben. In the article, the CEO said that his company was trying to create a new and improved way of paying for goods online but that they were struggling with the security system. He said if they could overcome this, they could launch the biggest and best online payment system in the world. It occurred to Ben that he had an innovative idea on how to handle this problem. Thinking that it wouldn't come to anything, he emailed the CEO, introducing himself and explaining his idea.

注意：1. 续写词数应为150个左右2. 请按如下格式在答题卡的相应位置作答。

He forgot all about it, but then a month later; the most amazing thing happened.

With all these concerns in mind, Ben determined to communicate with his parents frankly.

包括：1. 共享电单车使用情况；2. 你的看法，

注意：1 . 写作词数应为80个左右；2. 请按如下格式在答题卡相应位置作答。

共享电单车使用调查

Dear Tom,

Yours

Li Hua

Researchers have been applying artificial intelligence (AI)to monitor biodiversity and enhance efforts to protect some species from  (threaten). Unlike conventional methods, AI has the capacity  (analyze)massive amounts of data effectively.

Species are disappearing a rate much faster than that millions of years ago, with up to one million species on the edge of (extinct). In response, the United Nations set a goal in 2020 to safeguard at least 30%of Earth's land and oceans. "Al is imperfect' could promote important discoveries. says Nicolas Miailhe, Paris-based founder of the Future Society, an international non-profit organization aims to better govern AI. "We badly need human practitioners to design models and interpret data. "

Besides monitoring biodiversity in real time, AI can also be used to model the impacts of human activities on an ecosystem. Although it  (document) that human activities have resulted in biodiversity loss, little is known about which environmental factors have  (large) impact.

"Long-term statistics will play essential role in connecting changes in biodiversity with environmental changes. "says Luisa Orsini, who 65 (study) evolutionary bio-systems at the University of Birmingham, UK.

Lowe was facing a nightmare. His five-year-old son Tyler 1 from such a severe dental problem that he needed to have a(n)2 immediately. Lowe and his wife brought Tyler to Children's Hospital Colorado in Denver.

"As we sat in the waiting room, we felt 3And the way in which my wife was clinging to her son just made the 4 of the situation heavier. "Lowe remembered.

When a nurse called the family back, Lowe's 5 only grew. A young doctor walked into the room and told them that he would be in 6 of the surgery As the doctor began to explain how it would proceed, Lowe's mind 7 the worst possible outcome.

But then the doctor did something beyond 8. He looked at both Lowe and his wife in the eye, put a hand on each of their shoulders, and 9 them, "Today, your son is my son. "Lowe said he would never forget what the young doctor said, which was very helpful and meaningful. His 10fear gave way to calm

After the surgery was over, the doctor came back out to the family. "He 11 us with a big smile on his face and said Our son is just fine, and you can see him here in a few minutes. "Lowe 12.

After the surgery, Tyler made a quick 13 and led a normal life again. The Whole family felt so lucky to meet such a 14. doctor and Lowe explained that words 15 to express how grateful he and his wife both were for what the doctor said and did that day.

The majority of people make an assumption that the human brain learns all by itself. But the truth is that to some extent, we can train ourselves to be better learners.

These kinds of learning behaviours are called "active learning". Here are a bunch of guidelines to become active learners.

Follow the outer voice

We all have two voices. Our inner voice expresses our personal opinions, while the outer voice handles others' opinions. Although our inner voice can be useful, it can also block us from learning. If we pay too much attention to it, we risk missing important information while learning. Instead, active learners are open-minded and focus on what the speaker/writer is saying, not on what their brain is saying.  

Debate with the inner voice

If we find it a struggle to control our inner voice, we can disagree with it as most active learners do. When our inner voice tells us a speaker/writer is wrong, think about why the speaker/writer may be right. If not, at least we have "listened to" another viewpoint.

Ask questions

One of the easiest ways to promote active learning is to ask questions. When we obtain information from someone, from books or the Internet, ask a series of questions about the topic.  In short, we should never stop being curious.

Seek the truth

Active learners make an attempt to question the world around them and get to the truth deep within each idea. Even when an idea sounds insane, there may be an aspect of it rooted in truth. No matter how crazy it seems, we will increase our chance of learning something.

Many people let learning opportunities slip because they ignore what is said because of who the speaker/writer is. But active learners don't judge people on the basis of first impressions. Instead, they separate the message from the messenger.

A. Concentrate your attention on the message itself.

B. Form opinions based on first impressions of messengers.

C. In this manner, they are in a better position to make decisions.

D. I suggest doing a number of things to actively take part in our learning.

E. Be flexible in our opinions and we might end up agreeing with the speaker/writer after all.

F. For example, we can stay active in the learning process and reflect on what we have learnt.

G. The answers will lead us to further learning and help us gain a deeper understanding of the topic.

If this year's turkey seems over salty, blame your brain.

The question of when saltiness becomes too salty is decided by a special set of neurons (神经元) in the front of the brain while a separate set of neurons in the back of the brain adjusts your appetite for salt, which the researchers showed in a series of experiments on mice.

"We are happy to drink sodas, sports drinks, and even tap water that contain a little salt. But if you imagine a very high concentration of sodium like ocean water, you really hate it. "says Yuki Oka, an author of the study and a professor of biology at Caltech. This hatred to super salty foods and drinks holds unless your body is really low on salt something that's pretty rare in people these days.

But experiments with mice found that when salt levels drop sharply, the tolerance for salty water goes up. The reason for this change involves at least two different interactions between the body and brain. When the sodium in the bloodstream begins to fall below healthy levels, a set of neurons in the back of the brain respond by dialing up an animal's desire for salt. Meanwhile. a different set of neurons in the front of the brain monitors the saltiness of any food or water the mice are consuming. And usually, these neurons will set an upper limit on saltiness. But when salt levels get extremely low, the body sends a signal that is superior to these salt-limiting neurons, which allows mice to tolerate the saltiness of sea water.

The new study also found evidence that the brain cells involved in salt tolerance respond to hormone-like substances called prostaglandins. These substances, which circulate in the bloodstream, are best known for their role in causing inflammation, fever, and pain. Now it's becoming increasingly clear that they also play a role in altering salt tolerance.

"Wars were fought over salt just a few centuries ago, and at least one previous effort failed badly, for a simple reason- awful taste. "says Stephen Liberles, a professor and Howard Hughes Medical Institute investigator at Harvard Medical School. So finding a better option may require more than just research on how the brain monitors salt intake. "Scientists also need to understand how that substitute will interact with our taste sense.

Classical Chinese furniture — a desk, a cabinet or any other fine piece of furniture and often out of precious wood —impresses us with its delicate shape. The secret of its graceful form is less visible and lies in its complicated sunmao(榫卯)system, which allows the various components to be assembled neatly without glue or nails.

Suzhou, a scenic and peaceful city in Jiangsu, a province long known for its wealth, developed its own tradition of classical furniture design over the centuries. Examples of the Suzhou-style furniture are currently on display as part of Oriental Wisdom in Sun Mao, a group exhibition at the Prince Kung's Palace Museum in Beijing.

Running until Sunday, the show demonstrates the way that the complex sunmao technique has been used in making furniture, as well as the variations that developed in different parts of the country. Also on display are models of different kinds, as well as the components of two chairs, which are disassembled and laid out to give museum goers a clear view of the inner structure of classical furniture.

The Suzhou style flowered during the Ming Dynasty(1368-1644), and once dominated the market in Jiangnan, the southern region along the lower reaches of the Yangtze River. It integrated input from the intellectual class, who put their ideals regarding living spaces and spiritual harbors into its design. According to Xu Jianping, one of the inheritors of classical furniture design in the city, the Suzhou style presents beauty in the same delicate way the city does, and represents the life philosophy of its people to achieve "refinement through careful calculations".

Guangzhou style furniture is normally made out of tropical hardwood, and its forms and decorative patterns show the influence of European furniture styles resulting from Guangzhou's history as an international trade port. The Beijing style, which is more splendid, incorporates aesthetic(美学)and stylistic elements from both Suzhou and Guangzhou.

"While the Suzhou style is light in weight and elegant in outline, furniture in the Beijing style is more magnificent, as it used to be made for royalty and aristocracy. "Xu says. "Ultimately, people live with their furniture, so the principle of quality furniture is that it should be appropriate to the space. "

With graduation time around the comer, it's a bitter-sweet moment for everyone involved.

Leaving school with style

It was inevitable that I would leave my school in London where I had spent most of my time. That day, we wore something a bit different from our usual suits and uniform and we all sat down and watched a high-light video of the last two years, including inspirational messages from our teachers and some funny photos. Two weeks later, we attended our school prom(毕业舞会), where we could dance and say a final goodbye to our teachers and friends.

Coming out strong

The graduation ceremony is one of the most memorable parts of school life in Kazakhstan. At the official farewell, teachers and parents expressed their wishes for our future and cracked some jokes about the graduates. Then students danced "the last waltz at school". One or two days later, the graduating students went to the after-party event, involving fresh air, camping and having cozy chats by campfire. There is a tendency not to spend money on after-parties. Instead, many choose to give it to charities.

Filled with traditions

There are many traditions in the graduation ceremony in the United States. On the graduation ceremony day, four hundred of us sat on the football field and listened to speeches before we got to "walk"—went up for our diplomas and shook hands with the principal. We were dressed in formal clothing, went out for dinners and then danced the night away. There was usually an after-party at some-one's house.