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    The “24 solar terms” originated and was firstly used in China. It was created thousands years ago on the basis of practical needs of agriculture. Ancient Chinese people used it to guide agriculture production, special climate signs and even healthy living tips. Last year, the 24 solar terms was added to UNESCO's world intangible cultural heritage list. Now, it has been brought to life thanks to a creative designer from Southwest China's Guizhou province.

    On the eve of this year's Qingming Festival, Shi Changhong released his version of re-produced and pack-aged characters for each solar term in the form of “moving art” of gifs. Since their initial release on Zcool on March 29, the gifs have won great acclaim among the general public and quickly engulfed social media with millions of hits during the festival period.

    To maximize publicity, Shi released his work in three forms: video, animation and picture, while, the background sounds add to the brilliance.

    “When I watch the short video, I can strongly feel the Chinese-style elements hidden in them. And it is really cool to rejuvenate Chinese traditional culture in such a unique way.” WeChat user Xiao Feifei said.

    “It is really a comfort to me to see so many people like my latest work. To be honest, it would really surprise me if the work does not arouse a sensation among Chinese people. The 24 solar items is a deeply mooted concept that encapsulates the essence of Chinese wisdom. However, only a small portion of people know all the names or the correct order of those terms. My intention is to increase Chinese people's self awareness to learn more about our traditional fine culture. Actually, the 24 solar items work is only a part of my whole design program ‘Charm China', which I started over a year ago.” Shi told China Daily.

根据短文内容，选择最佳答案，并将选定答案的字母标号填在题前括号内。

    Astronauts on shorter shuttle missions (使命) often work very long days. Tasks are scheduled so tightly that break times are often used to finish the tightly that break times are often used to finish the day's work. This type of scheduled is far too demanding for long missions on the International Space Station (ISS). ISS crewmembers usually live in space for at least a quarter of a year. They work five days on and two days off to mimic the normal way they do things on Earth as much as possible. Weekends give the crew valuable time to rest and do a few hours of housework. They can communicate with family and friends by email, internet phone and through private video conferences.

    While astronauts cannot go to a baseball game or a movie in orbit, there are many familiar activities that they can still enjoy. Before a mission, the family and friends of each ISS crewmember put together a collection of family photos, messages, videos and reading material for the astronauts to look at when they will be floating 370 kilometers above the Earth.

    During their mission, the crew also receives care packages with CDs, books, magazines, photos and letters. And as from early 2010, the internet became available on the ISS, giving astronauts the chance to do some “web surfing(冲浪)”in their personal time. Besides relaxing with these more common entertainments, astronauts can simply enjoy the experience of living in space.

    Many astronauts say that one of the most relaxing things to do in space is to look out the window and stare at the universe and the Earth. Both the shuttle and the ISS circle the planet several times each day, and every moment offers a new view of the Earth's vast land mass and oceans.

    Japan has long been known for both its strong traditions and being on the cutting edge of technology, and this new inn combining the classic Japanese surroundings with high-tech slippers and furniture is a perfect reflection of this.

    Nissan Motor Co. developed a system in which slippers park themselves at the entrance of the traditional inn, called “ProPilot Park Ryokan,” waiting for guests to use them upon arrival. When guests have finished using them, the slippers will drive themselves back to their original position. Each slipper features two tiny wheels, a motor, and sensors to drive it across the wooden floor.

    The same technology features in Nissan's all-battery electric Leaf car. High-tech sensors and cameras allow the vehicle to safely back into parking spaces without any input from the driver. Four cameras and 12 sensors assess the vehicle's surroundings. ProPilot Park handles the accelerator, braking and steering (转向) input when the car is parking. Drivers operate the system with the press of a button, which they must hold down the entire time. Lifting a finger off the button will result in the car stopping immediately.

    The inn, located in the resort town of Hakone, about 75 kilometers southwest of Tokyo, is currently most famous for its view of Mount Fuji. However, the new self-driving slippers, released by Nissan in March, is the unique feature of the high-tech inn.

    “The self-parking slippers are meant to raise awareness of automated driving technologies, and their potential, non-driving applications,” Nissan spokesman Nick Maxfield said in a statement.

    In addition to the slippers, office chairs, floor cushions and traditional low tables in the inn also wheel themselves back into place after use.

    Many people don't consider their breakfast without a glass of milk. Right now, cows, buffalos, goats and sheep provide most of the world's milk. But soon, people could get milk from roaches(蟑螂).

    That isn't as crazy as it might sound. New research shows this “milk” is super-nutritious. What's more, some scientists have already begun referring to a lot of insects as source of milk.

    In 2004, Subramanian Ramaswamy started studying milk crystals found inside the roach. At the time, he was teaching biochemistry at the University of Iowa City.

    To learn more about the milk crystal from roaches, the scientists used X-rays to look at the atoms in it. The data basically revealed the chemical recipe of the roach crystal. They showed that roach milk is a “complete food”. It contains sugar with a fatty acid stuck to it. Fatty acids are the building blocks of fats. The protein in the milk is also full of essential amino(氨基的) acids, which are the building blocks of proteins. Since our bodies can't produce the “essential” ones, we need to get them from our food. And so do baby roaches.

    Barbara Stay, a biologist at Iowa University, also worked on the new study. She says the new data show that the roach milk is “three times more nutritious than cow's milk and four times more nutritious than buffalo's milk”.

    Ramaswamy would like to see roach milk turned into a protein supplement to feed hungry people. But not everyone is confident that it can be done.

    Marcel Dicke studies insects as a potential source of human food at Wageningen University in the Netherlands. Dicke says this is a “sound study”. However, in his opinion, “Extracting(提取) milk from roaches can only likely be done in a destructive way with only small quantities”. That means you'd have to raise and kill many bugs to get even tiny quantities of the milk.

    Standing desks have become common across Silicon Valley, offering health benefits to those willing to work on their feet. However, due to their high price, they have failed to catch on until now. Recently, Ikea has brought out Bekant convertible(可变换的) standing desk that can become a normal desk at the touch of a button. The $500 adjustable desk can transform from a standard desk to a standing one, and Ikea hopes it could make the standing desk mainstream.

    Experts say that changing from a seated to a standing desk can improve productivity. Similar desks have become a common sight at tech firms such as Google, where some employees have even installed treadmill (跑步机) and bicycle desks.

    The desk is not the first "convertible" on the market. As early as 2013, Stir Kinect brought out an adjustable desk. The $3,890 Stir Kinect desk has a motor to raise and lower itself, changing it into a standing desk or a traditional desk. The desk can even be programmed to move up and down slightly, making it appear to take a gentle breath to remind the user to change their positions. To move between sitting and standing positions, owners simply double tap on the screen. The desk can learn the user's preferences over time and suggest the best seating position.

    The Stir Kinect desk was created by a team of ex-Apple and Disney engineers. It has a built-in touch screen to control and track movement, and can tell users exactly how many calories they burn by standing during their working day. It also has devices containing power points and USB ports for charging phones, to keep cables hidden.

    "Ikea's height-adjustable desk is great for opening up the lower end of the market, " said JP Labrosse, founder and CEO of Stir.

Five trends to watch in the coming year

The number 21 is connected with luck, risk, taking chances and rolling the dice, all of which seem strangely appropriate for a year of unusual uncertainty. As 2021 approaches, here are some trends to watch in the year ahead.

⒈ Fights over vaccines

As the first vaccines become available in quantity, the focus will shit from the heroic effort of developing them to the equally difficult task of distributing them. Vaccine negotiations will accompany fights within and between countries over who should get them and when.

⒉ A mixed economic recovery

As economies bounce back from the pandemic, the recovery will be inconsistent, as local outbreaks and restrictions come and go — and governments turn from keeping companies on life-support to helping workers who have lost their jobs.

⒊ A less footloose world

Tourism will shrink and change shape, with more emphasis on domestic travel. Airlines, hotel chains and aircraft producers will struggle, as will universities that rely heavily on foreign students.

⒋ An opportunity on climate change

One positive side to the crisis is the chance to take action on climate change, as governments invest in green recovery plans to create jobs and cut emissions. How ambitious will countries' reduction promises be at the UN climate conference, delayed from 2020?

⒌ The year of déjà vu

That is just one example of how the coming year may feel, in many respects, like a second take on 2020, as events including the Olympics, the Dubai Expo and many other political, sporting and commercial gatherings do their best to open a year later than planned.