【推荐3】Anyone who has had a long-term disease knows that recovering at home can be lonely. This can be     1     (especial) true of children. They may feel     2     (leave) out. Now, these children may have a high-tech friend to help fed less alone. A small robot may help children who are recovering from long-term illnesses. The robot like human beings takes their place at school. And their school friends must help carry the robot between classes and place the robot on their desks.

Through the robot, a child can hear his or her teachers and friends. He or she can also attend classes from wherever they are recovering—whether at home     3     from a hospital bed. Dolva, one of the scientists who     4     (be) concentrating on developing the robot, explains     5     the robot AVI works. She says from home, the child uses a tablet or phone to start the robot,     6     (use) the same device, he or she can control the robot’s movements. Inside the robots there is a small computer linked     7     a 4G network. The robot is     8     (equip) with speakers, microphones and cameras,     9     makes communicating     10     (easy). So it’s the eyes and the cars and the voices at school. Hopefully AVI will help some children feel less lonely while they are absent from class.

A new exhibit at the Chinese American Museum in Los Angeles, called Lightscapes,     1     (provide) visitors with a modern version of the ancient Chinese art style, literally “shan shui hua”,     2    means “mountain-and-water painting” in English. The     3    (work) show scenes of mountains, rivers and sometimes waterfalls.

Artists Nick Dong and Chi-Tsung Wu found ways     4     (connect) the new, digital generation to this     5    (tradition) kind of art. Dong, born in Taiwan and now     6    (live) in North California, said, “In fact, shan shui hua was for all these artists to create a world where they want to hide and escape     7     reality.” Dong and Wu are trained in both Chinese and Western art styles. They use experimental materials and light in their artworks     8     (include) in the exhibit. That space is an escape for many people-similar to the shan shui hua paintings. Dong and Wu’s art also employs magnets (磁铁) to raise and lower objects. The movement is     9    (actual) meant to show that there is a force between all natural elements. They hope the modern-day viewers will be able to experience     10     the ancient artists were trying to communicate.

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.