Teenage life is full of adventures and challenges. Doing voluntary work is popular among some teenagers. And extra-curricular activities     1     (prefer) by others, such as organizing debates, studying literature, dancing ballet and cleaning up the greenhouses. But more people sign up for advanced     2     (course) out of curiosity.     3     (actual), some teenagers feel confused in their youth, and their behaviors are sometimes confusing. They think there is a generation gap between     4     (they) and adults, so experts are trying to find a suitable solution. Johnson is     5     outgoing freshman. He is so attracted to Chinese literature that he     6     (give) up his studies in Chicago and come to China since he was 10 years old. Obviously,     7     the help of his teacher, his Chinese has improved greatly and he can speak fluent Chinese on campus now. As scheduled, he will graduate from the school     8     he has stayed for a long time next year. What he is concentrating on is the ancient Chinese literature and he is     9     (interest) in Tang poetry. The topic of his research content is “the differences between Eastern and Western literature”. An editor that acts responsibly has advised him     10     (read) some classical Chinese literature first. This suggestion means a lot to him.

A slow train in Southwest China boasting its own study room has attracted much attention from netizen. The train No 5609/5610,     1     runs between Chongqing and Xiushan county, is a public-welfare “slow train”.

In some carriages, some seats have been replaced with desks and chairs next to the windows to transform it into a “study carriage” for passengers     2     need. The Chinese characters “Yu Yue” appear on the train, which translates to “traveling and reading     3     (happy).” Other inspirational     4     (slogan) can be seen throughout the converted carriages.

In addition to No 5609/5610, other “slow trains” have been upgraded with “study carriages”. Students from nearby schools often take the train between school and home. The trains are their “school buses” and many passengers use their travel time     5     (complete) homework.

On train No Z150, which runs between Guiyang and Beijing, a     6     (transform) “book bar” carriage has been welcomed by college students. There are nearly 400 universities and colleges in the cities along the line,     7     (make) train No Z150 the first choice for most students on those campuses.

Since 2015, the train’s dining car     8     (be) open for free at night to provide returning students with a lending library, free tea and other services. These small measures by the railway department are     9     welcome comfort for passengers in need of a     10     (relax) place to continue their studies.

3 . 阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。

Seagrass meadows (海草床) are wonder plants growing beneath the sea. Thanks to the assistance of tiger sharks,     1     huge seagrass meadow in the Bahamas Banks was recently discovered, offering the world a tool     2     (fight) climate change.

In this study, tiger sharks were selected as research tools due to their     3     (high) consistent associations with seagrass ecosystems. They spend 70% of their time in seagrass meadows. The team equipped eight tiger sharks     4     satellite tags, and used a 360-degree camera on a shark for the first time ever.

So far, the world’s largest seagrass ecosystem, measuring at least 66,900 square kilometers,     5     (discover). This reflects a 41% increase from previous estimates of global seagrass. In terms of climate change, seagrass is 35 times     6     (fast) at removing carbon than tropical rainforests. Yet seagrass meadows are rapidly disappearing, with over 92% of meadows in the UK     7     (go). Scientists are collecting seeds and trying to grow new seagrass meadows through restoration     8     (project). This new discovery offers optimism and proves the importance of the ocean for healing.

The sharks led us to the seagrass ecosystem in the Bahamas,     9     is likely to be the most significant blue carbon sink on the planet. The discovery shows us that ocean exploration and research play an important role in solving     10     (globe) issues like climate change.

Shennongjia is     1     household name in China because it’s the home of the legendary “wild man”. Its folk tale spans the generations. 

Between 1976 and 1981, the Chinese Academy of Sciences organized three large-scale     2     (science) investigations. They have collected hair, footprints and waste suspected of     3     (belong) to a “wild man”, but some experts argue that most were the result of bears, monkeys or even human beings. They failed     4     (uncover) the myth of “wild man”, but discovered the area’s rich biodiversity. Although several hundred people have claimed     5     (they) as eyewitnesses of some giant apelike creatures in Shennongjia, there is no tangible (真实的) evidence to confirm the     6     (exist) of a “wild man”. 

Nowadays, Shennongjia’s attraction is not     7     (mere) about “wild man”. Its appeal is more about its lively ecology, rich biodiversity and karst landforms (喀斯特地貌). Shennongjia’s beauty varies over the year as nature takes its course. Tourists can enjoy flower blossoms in spring, be shaded from the summer heat, appreciate red leaves in autumn     8     go skiing in winter. 

The “wild man” legend has been passed on for generations by word-of-mouth. In 2016, the legend of “wild man” in Shennongjia     9     (add) to Hubei Province’s intangible cultural heritage list. Today, tourists can visit Wild Man Cave,     10     eyewitnesses claimed that they spotted the creatures, and see “wild man” sculptures.

More than 500 pieces of relics     1     (discover) in recent months at the legendary Sanxingdui Ruins site in Southwest China’s Sichuan province, dazzling archaeologists with their historical value as well as the display of creativity.

The relics, discovered at the six new sacrificial pits of the ruins, include golden masks, jade and ivory artifacts and bronze wares     2     were delicately built and     3     (unique) shaped, said the Sichuan Provincial Cultural Heritage Administration.

The new finds bring the total number of items discovered at Sanxingdui to nearly 2,000     4     the excavation (挖掘) of No.3 to No.8 sacrificial pits began in October last year.

“The new discoveries demonstrate once again that     5     (imagine) and creativity of the ancient Chinese far surpassed     6     people today have expected,” said Tang Fei, chief of the Sichuan Provincial Cultural Relics and Archaeology Research Institute.

Tang added that the excavation of the new pits has entered a critical stage,     7     more items yet to be unearthed and expected to challenge the conventional     8     (wise) of archaeologists.

Originally discovered in the late 1920s, the Sanxingdui Ruins have been referred to as one of the world’s greatest archaeological finds of the 20th century.

Located in the city of Guanghan, around 60 km from the provincial capital Chengdu, the ruins covering     9     area of 12 square km are believed to be the remains of the Shu Kingdom,     10     (date) back some 4,500 to 3,000 years.

The game of basketball was created by Dr. Naismith,    1    Canadian who worked as a physical education instructor at the Springfield College.

The New England winters were very cold, and the students were unwilling to do outdoor     2    (activity). Naismith decided to invent a fast-moving game    3    could be played indoors. First he tried to change outdoor games such as soccer to indoor play, but he soon found them    4    (suitable) for small areas.    5    December of 1891, Naismith hung two old peach baskets at either end of the gym at the school. Then the first basketball game was organized,     6    (use) a soccer ball and nine players on each side.

Five years later, a championship (锦标赛)    7    (hold) in New York City. By that time, the team had reduced to seven players and five became standard in the 1897 season.

    8    basketball first appeared in the 1904 Olympic Games, it     9    (quick) spread throughout the world. In 1906, a metal ring was used    10    (replace) the basket for the first time, but the name basketball has remained.

Delicate, lustrous (光亮的), and soft to touch. The ethereal fabric we now call silk has threaded its way throughout China’s history.

One cannot be certain of its origin, but the ancient Chinese people credited their own wisdom to Leizu, wife of the Yellow Emperor (the legendary ancestor of all Chinese people), as     1     inventor of sericulture (养蚕).

Like almost all genres of art on the vast land of China, the style and texture of silk     2    (be) also multifarious. Hangluo satin from Hangzhou, Zhejiang province, is well known     3     its airy and sheer texture, while Yunjin brocade (凸花纹织物) from Nanjing, Jiangsu province, a luxurious fabric often     4    (use) for royal garments, represents China’s silk weaving technique at its prime.

Yunjin brocade     5    (make) by hand on giant looms (织布机), in a complex procedure     6     comprises more than a hundred steps. Even the most skilled artisans can only weave a few centimeters a day. Time, patience and deftness all play necessary roles to its heavenly beauty or as its name suggests, its cloud-like splendor.

In the Western Han Dynasty, with diplomat and explorer Zhang Qian     7    (open) up the routes to the western regions, silk graced many     8    (country) in Central Asia, later extending its reach to other parts of Eurasia and beyond. Fittingly, its name marked China’s major international trade routes, the ancient Silk Road and Maritime Silk Road.

In the hands of Chinese artists, the     9    (thin) threads can weave pictures of immense possibilities, and the softest material can go through thousands of years. As one of the many marvels of ancient China, silk is not     10     (mere) a type of textile. It is a cultural icon, and a symbol of elegance and grace.

A three-bedroom 3D-printed farmhouse has been built in Wujiazhuang Village, Zhangjiakou, which is the co-host city for the 2022 Winter Olympics. With ceilings and walls    1    (decorate) by weave patterns, Zhao Xiujuan’s house covers an area of 106 square meters.

When Xu Weiguo, a professor at Tsinghua University,    2    (come) up with the idea of building a 3D-printed farmhouse, there was an outpouring of concern from villagers,    3    wondered whether it would be strong enough. However, Zhao ignored what her fellow villagers doubted and made the work go on. The    4    (construct) was completed in two weeks, with only two people on each device.

China’s 3D printing technology    5    (use) in many fields since then. “This technology cannot only save manpower and construction costs,    6    increase efficiency and quality,” Xu said,    7    (add) that it can keep the design and construction of traditional houses while creating beautiful patterns. “There are still    8    large number of houses and infrastructure (基础设施) to be built    9    (wide) in China in the future,” Xu said. “Intelligent technologies can solve the labor shortage problem faced by the construction industry, freeing workers     10    their heavy labor.”