A concrete bookstore in Wisdom Bay innovation park in Shanghai is the first 3D-printed in China. It opened     1     the public in March, 2021. The bookstore consists of three parts, one of     2     is the area of about 30 square meters,     3     (accommodate) at most 15 people inside at a time.

Different from simple works such as a 3D-printed flower basin, the bookstore is     4     innovative attempt in the architecture field. Besides saving time, the 3D-printed architecture is     5     (cheap) in comparison with buildings using conventional     6     (technique) as well. In addition,     7     (it) use of fiber concrete is unique, which strengthens the earthquake     8     (resist). Experts say it is as safe as any traditional concrete construction     9     (base) on the experimental data.

Up to now, many similar researches on 3D-printed concrete technology     10     (conduct) in France, Switzerland and Russia. But China’s research and achievements in this field are among the best in the world.

5 . Some termite (白蚁) species have figured out how to enjoy the shelter of the huge complex nests that the insects build without contributing to their construction. They avoid the full anger of their builder hosts by being extremely easy-going.

Animals that live in the nests of another species without affecting them are known as inquilines. Inquiline termites are unique among termites in being unable to make their own nests. Instead, they live in the hallways built by another termite, Constrictotermes cyphergaster. Until now, it has been unclear how the two parties kept peaceful in such tight quarters because termites are typically very aggressive towards outsiders.

Helder Hugo at the University of Konstanz in Germany and his colleagues collected Constrictotermes cyphergaster’s nests in the Brazilian Cerrado and brought them into the laboratory. They then placed host and tenant (房客) termites in either open or narrow areas and used video to track and record the ways in which the two species reacted to each other.

Right from the start, the inquiline’ termites moved around less than their hosts and interacted little with them, even in the much narrower area. “Many times,” says Hugo, “when two unrelated groups are put together in a limited space—such as an experimental area—the outcome is conflict with losses from both sides.” But that didn’t happen here. Despite attacks from host termites, the tenant termites were obedient. Hosts would bite or attack the inquilines with strong chemicals, but their targets never responded in the same way, choosing to flee. Some ignored the hosts completely.

“We did not expect that they would never fight back,” says Hugo, noting that the inquilines are capable of protecting their own place with mouths. “By preventing conflict going worse, inquiline termites may considerably improve their chances of living together with their host termites peacefully.”

“Passiveness does not necessarily lead to defeat, but can be a very useful strategy, saving energy and resources,” she adds. “Nature may not always be red in tooth and claw, and aggression is not any more successful a strategy than ‘cowardice’ (儒弱).”

6 . Four Interesting Science Museums

Polytechnic Museum, Russia

For many guests of the capital, some of the most vivid childhood memories are associated with this museum. A variety of technical fields are presented in 65 halls-Mining, Space, Energy, and Transportation, etc. And the exposition（博览会）is the only museum project in Russia about the history of the bike. The interactive division "Technoplay" is open, where you not only can but also need touch most of the exhibits with your hands. In addition to self-experimentation, for personal requests the museum's experts will show many entertaining experiments.

Eureka, England

The Eureka educational center is a huge complex where modern science and technology are becoming clear, even to kids. The main exhibition is devoted to the human body, the laws of physics and natural things. Visitors can obtain energy or create paper with their own hands. On the area of the Eureka educational park there is a botanical garden and a collection of minerals from the rock types of Finland is presented there.

Deutsches Museum, Germany

In this museum you can see more than 100 thousand different items from windmills（风车）to medical equipment. All aspects of industrial production appear before the eyes. Several museum rooms are arranged especially for children-there are exhibits that entertain kids starting from three.

NEMO, the Netherlands

The largest Dutch research centre stands ready to share its secrets with everyone. This immersion（沉浸）in the world of science and technology will not be dull. All significant information is presented in the form of exciting games. All exhibits are interactive; visitors are allowed to touch, pull and press on anything. The museum is for children from 6 to 16, as well as for their parents-it will be interesting to all.

7 . World’s loneliest marathon

Many of us know about Russia’s Lake Baikal from our textbooks, or by listening to Chinese singer Li Jian’s hit song, Lake Baikal. But over the past decade, the world’s deepest freshwater lake has been in the spotlight for an extreme sport.

Each March since 2005, about 150 people from around the world sign up for the     Baikal Ice Marathon. They come to explore the lake’s breathtaking beauty and challenge themselves in unpredictable conditions.

The 26-mile (41.84-kilometers) journey starts on the lake’s eastern shore. In March, the ice is a meter thick and iron-hard. Runners cross this frozen surface, finishing on the western side of the lake.

Known as the “blue eye of Siberia”, Lake Baikal has exceptionally clear waters. This means its ice is almost perfectly transparent. “Seen from above, a runner on the ice looks as if he or she is jogging through space,” The New York Times noted.

The landscape might be beautiful, but it’s also harsh. Strong winds blast across the lake and frostbite can occur within half an hour. Runners say the cold climate is what draws them. They want to test their limits.

“When you are in such an environment, you don’t have cars around you, you don’t have the noise around. I think these extreme races allow you to be alone with nature,” Alicja Barahona, a 64-year-old runner from the US, told ABC News.

The location offers some strange and unique characteristics for this marathon. The finish line is visible from the start, but the endless white offers no progress markers. The race also ends with little fanfare (喧闹). Tourists crowding the ice are mostly addicted to snapping selfies (自拍) and just ignore the runners.

For some runners, the absence of spectators (观众) makes the race more challenging, because it’s lonely. They must fight with themselves. “You are alone on Baikal. It is your race. You are alone with yourself. All you need to do is to defeat yourself,” Veronique Messina, a French runner, told the Telegraph.

8 . If Confucius(孔子)were still alive today and could celebrate his September 28 birthday with a big cake, there would be a lot of candles. He'd need a fan or a strong wind to help him put them out.

While many people in China will remember Confucius on his special day, few people in the United States will give him a passing thought. It's nothing personal. Most Americans don't even remember the birthdays of their own national heroes.

But this doesn't mean that Americans don't care about Confucius. In many ways he has become a bridge that foreigners must cross if they want to reach a deeper understanding of China.

In the past two decades, the Chinese studies programs have gained huge popularity in Western universities. More recently, the Chinese government has set up Confucius Institutes in more than 80 countries. These schools teach both Chinese language and culture. The main courses of Chinese culture usually include Chinese art, history and

philosophy(哲学). Some social scientists suggest that Westerners should take advantage of the ancient Chinese wisdom to make up for the drawbacks(缺陷)of Western philosophy. Students in the United States, at the same time, are racing to learn Chinese. So they will be ready for life in a world where China is an equal power with the United States. Businessmen who hope to make money in China are reading books about Confucius to understand their Chinese customers.

So the old thinker's ideas are still alive and well.

Today China attracts the West more than ever, and it will need more teachers to introduce Confucius and Chinese culture to the West.

As for the old thinker, he will not soon be forgotten by people in the West, even if his birthday is.

9 . In the latest romance-drama, Descendants of the Sun (《太阳的后裔》), a handsome soldier Yoo Shi-jin（柳时镇） (Song Joong-ki)(宋仲基) meets the pretty doctor Kang Mo-yeon（姜暮烟） (Song Hye-kyo)（宋慧乔） in a hospital, and he doesn’t hesitate to hit on her.

The dialogue, which takes place early in the first episode( 集）, immediately indicates that this is no ordinary South Korean drama. There’s no family feud （不睦）, or love tangles, or guesses and misunderstandings. The 16-episode show is set in the fictional war-torn country of Uruk （乌鲁克）. Song Joong-ki is the leader of a special warfare command unit, while Song Hye-kyo plays a doctor who works for a humanitarian medical organization. Both are sent in the midst of disaster and disease as part of their work with UN peacekeeping troops. Both know and show clearly what they want and what they hate.

But what stands out the most are Song’s skills as a pick-up artist（撩妹技能）.

Boldness and creativity are the key weapons in his arsenal. When Kang invites Yoo to drink wine with her, Yoo , who is not allowed to drink alcohol as a soldier, says, “There is a way” before kissing her. Forget about the “eighth-episode rule” . This kiss happens in the fourth.

Humor also does the trick. On their first date in a cinema, Yoo says, “This is the most exciting moment of my life. The moment I am with a beautiful woman before the theater lights go out.” When Kang tries to give Yoo a hard time, Yoo jokes, “I mistook you for a beautiful woman because it’s dark.”

And actor Song Joong-ki, who just came back from two years of military service last May, makes sure he delivers his pick-up lines just right.

“In Deep Rooted Tree (《树大根深》) and The Innocent Man (《善良的男人》), he [Song Joong-ki] showed he had the steel to play fearless and heartless men – that he could be taken seriously as an actor, despite his pretty face. In Descendants, he hits the emotional core of every scene, whether he has to be bold and amorous, guarded and mysterious, or sad,” said critic Foong Woei Wan in The Straits Times.

10 . For your next out-of-this-world vacation, you now have the option of literally going out of this world—but it’ll cost you $ 40 million. Then again, can you really put a price tag on having the time of your life? According to a new report from Popular Mechanics, Russia is looking to build a luxury hotel in outer space. There you will wake up to a breathtaking blue planet—the earth! The hotel is expected to be stationed on the International Space Station (ISS).

While space tourism itself isn’t exactly a novel idea, the notion of building a hotel out there hasn’t been raised before. Really, other companies are still focused on the transportation part of the puzzle — after all, a trip to space is enough for most folks.

According to Popular Mechanics, the hotel will include a luxury orbital suite with big windows, personal hygiene (卫生) facilities, exercise equipment, and yes, WiFi. Because if you can’t share your experience on social media, did it really even happen?

Of course, the reasons behind the hotel aren’t just for fun and games. Apparently, space tourism might be able to help the Russians pay for another module to add to the international Space Station. Russian space contractor RKK Energia is currently building the first such module, which will give scientists a laboratory and power supply station from which to conduct tests.

If any of this is going to happen, however, Russia is going to have to hurry. With the ISS expected to be out of use in 2028, there’s little time to build the hotel and find wealthy tourists to actually buy a trip into outer space.

So if you’ve recently come into a fortune and are interested in investing in what could be the time of your life, ISS is calling your name.