A concrete bookstore under    1    （construct）in Wisdom Bay innovation park in Shanghai will be the first 3D-printed bookstore in China, and it is due to open to the public at the end of January, 2021.

"The bookstore was printed on-site in three weeks,” He Yuting,    2    is responsible for this project, from Tsinghua University School of Architecture in Beijing, told the Global Times on Thursday. The printing work has finished and the bookstore will    3    （decorate）,   He told the reporter.

    4    （compare）with simple works such as a 3D-printed flower basin, the bookstore is an innovative attempt in the architecture field, as the 3D-printed architecture is    5    （cheap）than conventional construction techniques and saves time, He said.

    6    makes this bookstore so unique, is that “we used fiber concrete to resist compression,” He added,    7    （note）that the floor also has a heating system.

He mentioned the 3D-printed bookstore is as safe as traditional concrete construction based on their experimental data in    8    （term）of structure and earthquake resistance.

So far, different teams in France, Switzerland and Russia all    9    （have）similar research on 3D-printed concrete technology,    10    China’s research and achievements in this field are among the best in the world, according to He.

It is a fact that family spending on education in China     1     (increase) in the past decade. A large number of     2     (factor) contribute to the ever-increasing education spending, “letting children win at the starting line” being one of them. Many parents spend a lot of money on pre-school education,     3     (send) kids to the best kindergartens, the tuition fees of which are much higher than     4     of universities. Choosing better primary schools also takes money. Normally, students     5     (expect) to attend schools within the district where they live.     6    , many parents prefer to send their children to     7     better-known school in other districts regardless of the large sum of “donation”. Apart from formal education, parents also pay for various after-school programs,     8     common painting or dancing classes to expensive overseas summer camps.

There is nothing wrong with parents' passion for education, but parents should keep in mind that spending money doesn't     9     (necessary) guarantee a better education for children. Money should be put     10     it matters most.

China is listed among the four ancient civilization nations in the world. Over 5000-year's history     1    （witness）the creation of many Chinese traditional festivals. Many of them have a long history in China. According     2     their contents, Chinese festivals can     3    （divide）into five kinds,     4    （include）agricultural, sacrificial, commemorative, recreational and celebratory festivals.

Of all the traditional festivals in China, the Chinese Spring Festival and Mid-Autumn Festival are the most     5    （significance）to modern Chinese people nowadays. Spring Festival is also called Chinese New Year,     6     is like Christmas in the west, and Mid-Autumn Festival is a bit like Thanksgiving Day in America. The double ninth festival is celebrated     7    （special）for elderly citizens, while the double seventh Festival is for valentines.

In addition, there are quite a lot charming ethnic（民族的）group festivals with unique colors celebrated in China as well, like the double     8    （three）festival for Zhuang people in Guangxi autonomous region, and the Sho Dun festival in Tibet. Apart from the ethnic, geographic, linguistic, and historic    9    （tie）that unite all the minority people groups in China, traditional festivals are one of the     10    （strong）bonds reinforcing the cultural identity of the Chinese nation.

Tools have long been important in the    1    (develop) of human civilization(文明). People used to think that only humans had the ability    2    (make) tools. Then scientists were    3    (surprise) to discover that some animals also make tools. And guess what? Some birds can make tools, too!

The woodpecker finch is a bird that’s native to the Galapagos Islands. It’s famous     4    its tool use behavior in the wild. Since its beak (鸟喙) can’t always get into the small holes    5    insects live, the bird finds a twig(细枝) of the perfect size and uses    6    as a tool to force insects out of their hiding places.

A different type of finch, called a cactus finch, has also learned this skill by    7    (follow) the woodpecker finch. How’s that for smart?

Sometimes, birds even use humans to help them. Carrion crows(小嘴乌鸦) in Japan have been seen placing walnuts(核桃) on busy highways. These crows have figured out that it’s    8    (simple) to have a car break a nut for them than to open it using their beaks. The crow first drops the nut on the highway and then flies to a safe place. Next, it    9    (patient)waits for a car to run over the nut. Once the nut is broken, the crow     10    (watch) for the traffic lights to change and the cars to stop. It then flies down to eat its freshly opened treat!

According to Xinhua News Agency, the Palace Museum and Huawei signed a cooperation agreement on March 15. The two sides will set an example to 5G use .

The Palace Museum received more than 17 million visitors in 2019,     1     (make) it the most visited museum in the world. In the past 20 years, an office information network covering the whole museum     2    (build) gradually. The museum has developed an App     3    provides an in-depth explanation of cultural relic information and cultural services. Also, the museum has researched on the     4     (apply) of VR, AR, AI in museums.

    5    signing of the agreement marks a new chapter in the strategic cooperation between the Palace Museum and Huawei Technologies Co. So, Huawei will make efforts     6    (speed) up the intelligent construction of the Palace Museum.

"The 600-year-old Palace Museum has never been so close     7     science and technology." Shan Jixiang said     8     (proud) ,former director of the Palace Museum.

Shan shared many ideas about the 5G Palace Museum. With the help of advanced technology,     9    is expected that in the future, audiences around the world will be able to experience and visit the Palace Museum, whether it is a field trip or a virtual tour. Also, the use of AI technology provides a     10     (broad) platform and stronger knowledge support for cultural relics among young people.

Last Friday, the Danish Mayfly    1     (name) by an international group of scientists as the Insect of the Year for 2021. But it won't have a long time to celebrate because a fully developed mayfly only     2     (have) a few days to fly and lay new eggs before it dies.

    3    mayflies' time on earth is short, their developmental cycle is quite long. Female mayflies fly over water between May and September, laying     4     (thousand) of eggs that then go down to the riverbeds. They are buried(埋) there and it takes them between one to three years     5    (become) baby mayflies.

By     6     (reduce) its weight, a baby mayfly rises to the water surface. Once there, its skin breaks and within a few seconds a flyable mayfly is    7    (final) born. With neither mouth     8     stomach, the newly born mayfly can live only for a few days to lay new eggs before its     9    (die).

Scientists have carefully chosen    10     unique kind of insect each year since 1999 to bring the wildlife closer to people.

Mascots (吉祥物) for the 2022 Beijing Winter Olympic and Paralympic Games（残奥会）

A red lantern baby called “Shuey Rhon Rhon” and an     1     (energy) giant panda named “Bing Dwen Dwen” have been uncovered as the two mascots for the 2022 Beijing Winter Olympic and Paralympic Games. The mascots, known to people     2    Tuesday night at Beijing’s Shougang Ice Hockey Arena,     3     (connect) with the host nation’s culture.

    4     ( explain) the idea clearly behind the design of the two mascots at the launch ceremony, Beijing 2022 executive president Chen Jining couldn’t hide his pride. “The two mascots put elements of traditional Chinese culture together with a modern international style.     5    is believed that they show the Chinese people’s eager expectations for the Beijing Winter Olympic and Paralympic Games, and China’s warm invitation to friends from all over the world,” said Chen,     6    is also the mayor of Beijing.

“They are designed     7     (express) all the aspects of the Olympic spirit, including wonderful characteristics such as passion, perseverance, friendship and common understanding to     8     (active) engage the public.”

The name “Bing Dwen Dwen” is     9    combination of several meanings in the Chinese language, with “Bing” the Chinese word for “ice”, and “Dwen Dwen” meaning     10     (strong) and liveliness. In the name “Shuey Rhon Rhon”, “Shuey” is the Chinese word for “snow” and “Rhon Rhon” has the meaning of tolerance.

In the age of the smart phone, there seems no reason to ask questions about: the weather forecast, a business’s phone number or directions, which can all be    1     (easy)found on Google, but very often people actually ask these things by    2    (make) a call. Your answer may be replied to with a thank-you e-mail.

This isn’t the first time that great changes     3    (take) place in our manners due    4     technology. In     5    late 1870s, when the telephone     6    (invent), people didn’t know how     7    (greet) a caller. Often there is just     8    (silent). Alexander Graham Bell, the inventor, suggested that people     9    (say) “Ahoy”, but finally “Hello” went out, the greeting used in everyday face-to-face communications now.

Try to be respectful no matter     10    you communicate with. Just keep it in mind that politeness never goes out of fashion.

Exercise is one of the most important     1    (part)of keeping your body at a healthy weight. We also know that staying fit and healthy is very vital. Exercise can help prevent weight gain. If you can’t afford to pay the gym     2    visit every day, don’t worry—just become active throughout the day.

When you exercise    3    (regular), you are in better chances of     4    (improve)your mood(心情). It can also increase your confidence. Besides, it will better your appearance,     5    means your body will be in good shape. Regular exercise is also good     6    physical fitness and good health. Apart from weight control, exercise can also delay your aging process.

    7    you don’t exercise, your muscles will become very weak. Also, your heart and lungs might not    8    (function) as well and you are more likely to get injured. Inactivity is as much of a health risk as smoking.

Make sure that an exercise plan     9     (make), so you can know when and what you should do. However, don’t over-exercise yourself because doing too much exercise on a daily basis will have    10    (harm)results.

One of the best things about a photographer is that you can observe animals in their     1     (nature) environment. I really enjoy working outside in the wild. I like to take photos in Yellowstone National Park best. Being famous    2    the variety of its wildlife, it is probably best known for its bears,     3     can run very fast and also swim perfectly.

Last spring, after stepping out of a dark forest, I was     4    (shock) to see the breathtaking view. While I was concentrating on photographing the amazing scene? I     5     (sudden) felt I was being watched. I turned slowly and     6     (find) a bear only metres away from me, staring at me. My legs started shaking. Somehow, I forced my finger     7     (press) the button. Luckily, a second later, the bear turned     8     ran back into the forest. And I had a     9     (frighten) but magical experience!

I sometimes look at these photos? and they serve as a     10    (remind) to show respect to all animals.