【推荐1】Wilbur and Orille Wright are brothers famous for inventing the first aeroplane. Their interest in flight     1     (start) on the day when their father brought home a toy helicopter for them. It was made of paper and wood. The boys played with it until it broke, and then made their own     2     (replace) it. When they were older, they owned a bicycle shop where they started producing and selling their own bikes. This provided them with the money to pay for their experiments in flight. Eventually, they built their     3     (fly) machine.

China is pretty much obsessed with QR Codes(二维码), which were responsible for $8 trillion worth     1     business deals last year. Businesses should look to China when it comes to     2    (understand) just how far QR Code usage can really go.

China had long realized the     3    (convenient) of using QR Codes as a method of payment. WeChat is without doubt the top App in China, especially considering that 93% of     4     population there use it. This App includes a function     5    (name) WeChat Wallet, and people in China usually pay through the QR Codes which     6    (produce) through WeChat Wallet,     7     needs to be connected with users’ bank accounts and then they can start spending immediately.

Almost all vendors get payments through QR Codes. They are being used for bike- renting, grocery shopping, hotel reservation     8     many other things.

QR Codes are     9    (simple) so popular that some people even use them     10    (collect) donations!

Many measures have been taken to fight food waste, but one young man is making a big difference with technology.

Liu Jichen, 23,     1     student from Tsinghua University, has developed a WeChat mini-program     2     (call) “Clear Your Plate”. After a meal, users can open the mini-program and take a picture of their empty plates. Once the image     3     (recognize) by the AI, students can collect points and use them to buy gifts or purchase charity meals donated     4     children in rural areas.

Liu and his team, together with other organizations, launched the “Clear Your Plate” campaign in November for the third year,     5     has swept over 1,017     6     (university) across the country.

The one-month campaign attracted almost 1.6 million participants and     7     (reduce) food waste by 862 tons in total, The China Youth Daily reported.

Thanks to his innovative and     8     (practice) actions concerning social issues, Liu was awarded by the UN Office of the Secretary General’s Envoy on Youth in September, 2020.

“Through the campaign, we hope to inspire everyone     9     (take) action against food waste and to contribute Chinese     10     (wise) and solutions to global food security challenges,” he said.

The advancement of computing power has been     1     (absolute) unbelievable in the past few decades. Many parts of our lives     2     (change) so far by computers and one tech field that shows unbelievable promise for the future is that of Artificial Intelligence (AI).

Now, experts are using the technology     3     (help) diagnose heart disease. Researchers from the John Radcliffe Hospital in Oxford, England, created Ultromics, a system     4     increases the chances of discovering heart disease, and it's already proven to be     5     (accurate) than human experts.

In the medical community alone, AI advancements have a great influence     6     public health. Optellum, a machine learning startup, is bringing an AI system that detects lung cancer to     7     masses. Timor Kadir, the company's chief science and technology officer said that it could diagnose close to 4,000     8     (patient) with lung cancer per year at an earlier stage than a doctor could.

The technology would serve as a(n)     9     (rely) tool for doctors, which can help the patients begin their healing process quicker and more efficiently,     10     (save) thousands of lives with every use.

Modern inventions have sped up people’s lives amazingly. Motor cars cover a hundred miles in     1    (little) than an hour, aircraft cross the world within a day, and computers operate at lightning speed. Indeed, this love of speed    2    (seem) never ending.

All this saves time,     3    at a price. When we lose or gain half a day in speeding across the world in an airplane, our bodies tell us so. We get the uncomfortable feeling     4    (know) as jet lag: our bodies feel that they have been left behind in another time zone. Again, spending too long on computers results in     5    (pain) wrists and fingers.

What do we do with the time we have saved? Certainly not relax. In today’s fast-paced life, we find    6     difficult to sit and do nothing or even just one thing at a time. Perhaps the days are long gone     7    we might listen quietly to a story on the radio, letting     8    (imagine) take us into another world.

There was a time when some people’s lives     9    (go) on at a much gentler pace, and in a familiar pattern. We might envy a lifestyle like this. Yet before we do so, we must think of the hard tasks our ancestors faced: they farmed with bare hands, often lived close to hunger, and had to make     10    (tool) from wood and stone.

Schools in the UK are trying the use of "classroom robots" in order to ease the growing teacher     1     (short). So far, two primary schools in Plymouth have introduced the robots,       2     an alternative to teaching assistants.

Britain's lack of teaching staff     3     (become) worse over the last ten years and shows no sign of improving. Graduates are not     4     (will) to enter the primary education and many current teachers are abandoning the profession for careers in other fields.     5    (face) with this concerning problem, some schools believe that robots might soon be able to improve the situation.

Tests have shown that teachers can train the robots within just three hours by showing a range of classroom techniques,    6       are then copied by the robot and used in a real classroom setting with real students doing tasks. In one example, the robot teacher     7    (successful) guided the students through challenging tasks,       8     (give) them praise and encouragement when necessary.

The project has been met with     9    (mix) reactions from teachers. Some are concerned that the robots are here to replace their jobs,     10     others optimistically consider the machines as a way to reduce their heavy workloads.

It is hard to give a precise definition of Western art. Perhaps the best way     1    (understand) Western art is to look at the development of Western painting over the centuries. During the Middle Ages, the purpose     2    Western art was to teach people about Christianity. Thus, artists were not interested in     3    (paint) realistic scenes. This began to change in the 13th century with Giotto di Bondone, whose paintings     4    (show) real people in a real environment. Next came the Renaissance, when new ideas and values gradually replaced old     5    (one) from the Middle Ages. Painters adopted a more humanistic attitude to life,     6    (use) perspective and oil paints. The emphasis     7    (increasing) shifted from religious themes to people and the world around us. After the invention of photography, paintings were no longer needed     8    (preserve) what people and the world looked like. As a result, Impressionism emerged in France. The name of this new movement came from     9    painting by Claude Monet called Impression, Sunrise. In this work, Monet’s aim was to convey the light and movement in the scene. Picasso, one of the painters of Modern Art, tried to analyze the shapes     10    existed in the natural world but in a new way, with Cubism.