The Vieira family moved to the United States in 1981. At that time, they decided to stop speaking Spanish at home and only speak English.  This was because they were now living in an English-speaking country.

    Now the Vieira children are adults, and they sometimes travel to Spain to visit their family and friends. But they can't communicate with them. Unfortunately this is common. When people move to new countries, they often leave their own customs and mother language behind. This is a mistake because there are many benefits to knowing more than one language.

    One advantage of speaking more than one language is that you can communicate directly with more people around the world. You do not have to depend on others to talk for you, so you're more independent (独立). People who know only one language must use others to help them communicate.

    Furthermore, speaking a second language also allows people to experience other cultures and customs more effectively. Local expressions, vocabulary, and even jokes can have a powerful effect on a person's understanding of another culture. So, knowing more than one language increases your knowledge of other cultures.

    Finally, having more multi-language speakers improves relationships between countries. If people from different countries can communicate well, the world can become closer. Countries will then have more respect for each other and better understand each other.

    The benefits of knowing more than one language are clear. In fact, there are no disadvantages. It is very sad that many people don't try to learn another language. It is even worse when people let themselves forget their mother language and become silenced.

The Terracotta Warriors, one of the eight wonders of the world, have enjoyed international fame. Located in Xi'an in northwest China's Shaanxi Province, they are warriors of the first-ever emperor in1China or Qin Shi Huang in Chinese, Ying Zheng.

Even though I knew they are life-sized sculptures (雕塑), I was still2 when I saw them. I was lucky enough to3 the pit (深坑) and take a close look at them for the first time.

They were made around 2, 200 years ago. When I first got down into the pit, the sculptures scared me4some of them lacked body parts.

I was told that the Terracotta Warriors are not easy to preserve (保存;保护) for over thousands of years. But to my surprise, they were actually5 in color when they were first discovered. However, the color fell off6after being exposed in the air.

The difficulty of preservation is one of the reasons why they have stopped7out other pits. Although the Terracotta Warriors are breathtaking, they are only part of the Mausoleum (陵墓) of the First Qin Emperor.

Shen Wenxi, an expert and museum librarian of the Chinese Academy of Social Sciences, told me there's an even grander area8 man-made mountains, rivers and seas inside the emperor' s underground palace.

However, there is no plan to dig them until there are perfect9of protecting and preserving them. Experts are still busy restoring the relics (修复文物) that were10in the 1970s.

Robots have built a big house in Switzerland using 3 D-printed materials.It is the first house made{#blank#}1{#/blank#} robots for people to live in.It is environmentally friendlier and {#blank#}2{#/blank#} （ safe） than man-made houses. 

The creators say the future of building will {#blank#}3{#/blank#} （ change） by 3 D-printing technology."This is a new way of seeing architecture（建筑），"said one of the creators."How you build is important." 

The big house was built {#blank#}4{#/blank#} （ complete） from robot-made materials.It used 60% less cement（水泥） than a man-made house.There are thirty-five {#blank#}5{#/blank#} （ part） in the house，but some wise robots built each one in sixty to ninety minutes. {#blank#}6{#/blank#} （ it） means that the robots built the full house in just 48 hours. 

It is not the first time for robots {#blank#}7{#/blank#} （ build） houses.Some Chinese {#blank#}8{#/blank#} （ use） 3 D printers to build ten houses in a day in 2014.And also they created a building the next year.Last year，some Italians built a house in just 48 hours. 

Scientists say one day they could send robots to build houses on {#blank#}9{#/blank#} moon.We are curious about {#blank#}10{#/blank#} we're building our future.

There are about 300 Asian (亚 洲 的) elephants in China now. They're in great danger, so we should learn more about Asian elephants to protect them better. 

 Wang Yan is a student at Northeastern University(东北大学) in Shenyang. She likes to spend her weekends exploring the narrow streets of the city. She is especially looking for unknown bookstores. In these bookstores, she can relax and read. "Each store is special," she said. "We can enjoy the beauty of the city and read a good book."

 Since the beginning of this year, "City Read" has become a popular topic. Many young people share their favourite bookstores and talk about their experiences of finding"reading freedom" near home.

 In Shenyang, there are many private bookstores hidden away in the small streets. Some are quite famous. The 101-year-old Gede Bookstore has a grand style. Whoop Book & Cafe, a former boiler room(锅炉房), suggests new books every week. And at the When Paper Talk Bookstore, new books are never sealed (塑封).

"These bookstores are very close to my place. They feel like home. I love sitting there. It's just wonderful," said Zhang Qi from Shenyang.

 In Beijing, 24-hour libraries are very popular. Their convenient locations and all-day service attract many young people.

"City Read" has become popular because public(公共的) facilities are much better than before. In Shenyang, for example, old buildings have been turned into cultural spaces. Across China, "10-and 15-minute reading circles" are being set up to improve public reading facilities.