People who live on the Moon will experience night and day, but a lunar day and night would last almost an Earth month.

Earth’s gravity causes the Moon       1    （experience）a slight elongation (轻微伸长) on the sides closest and farthest from us. The gravitational forces acting     2    （different）on the near and far side of the Moon’s elongation create a torque (扭矩)       3     acts to change the Moon’s rotational (旋转的) period so that it matches its orbit period. This     4    （know）as “tidal locking (潮汐锁定)”.

Because the Moon rotates at the same time as it orbits Earth, it only ever presents the same face to us. But even though the Moon is tidally locked to Earth, it’s still rotating with respect to    5     Sun. Its rotation period is 29 days, 12 hours and 44 minutes —also the     6    （long）of the “lunar month” on Earth. So, anyone     7    （live）on the Moon would experience about two weeks of daylight,     8    （follow）by about two weeks of night.

Of course, from the nearside of the Moon, Earth appears to stay in exactly the same position in the sky while the     9    （star）rise and set —although Earth’s exact position depends     10     where you are on the Moon. The appearance of Earth will change, just like the Moon’s does, over a lunar month, but Earth itself will be observed rotating once in a little over 24 hours.

Shoushan Stone was first discovered in Shoushan, Fuzhou. For centuries, craftsmen have been carving stones primarily     1     (mine) from the Shoushan village. The stones are carved     2     figures, animals and many other artworks.

The Charm of Shoushan Stone,     3     ongoing exhibition at the National Art Museum of China,     4     (gather) antique and modern objects which introduce the tradition of stone carving in Fujian. It offers a visual introduction to both the fine quality of Shoushan Stone and the superb skills required     5     (process) it. On show at the exhibition are seals(印章) made from excellent examples of the stone,     6     were sought after among the literati (文人墨客) of the Ming and Qing dynasties. There are also mini sculptures which show craftsmen's different     7     (approach) to carving Shoushan Stone based on its rich color schemes: a red and yellow stone that is suitable for sculpting mountains, flowers and fruits, a black one for trees and stones     8     a grey one for clouds.

So far, Shoushan Stone,     9     (official) named “China National Stone”,    10     (become) a symbol of elegance, dignity and wisdom, which is worthy of collection.

Luban lock is a traditional Chinese folk educational toy that was believed to be invented by Lu Ban,     1     structural engineer from the Spring and Autumn Period (770—476 BC). Lu was later became known as the “father of     2     (carpent)” in the country.

The concave and convex parts within the toy dovetail (吻合) perfectly. Luban locks come     3     different shapes and sizes, and with different internal structures. They are known for being easy to take apart     4     difficult to reassemble.

The interlocking burr puzzle with the simplest construction uses three rods (杆)     5     can be assembled into a three-way cross, in which each rod is perpendicular (垂直的) to the other two.

Its structural integrity relies     6     (sole) on its internal arrangement, removing the need for nails or cords. Similar to folding a piece of paper to create a standing shape, this seemingly simple yet ingeniously     7     (craft) toy encapsulates (概括) a reservoir of extraordinary wisdom.

Beyond its role as a toy, the principles behind the Luban lock’s interlocking structures have been extended into the realm (领域) of     8     (architecture) design.

In 2020, the craft of making this toy     9     (name) a Shandong provincial intangible cultural heritage item. In Tengzhou, Zaozhuang, the birthplace of Lu Ban, this ancient craft has been passed down over the centuries. Many workshops in the city can still be found     10     (manufacture) this lock today.

Harbin, the capital city of Northeast China’s Heilongjiang province,     1     (welcome) nearly 3.05 million visitors, raking in 5.91 billion yuan (about $832.39 million ) of tourism revenue (税收), during the three-day New Year holiday,     2     ended Monday.

Both the number of tourists     3     the amount of tourism revenue surpassed the figures for 2019, marking a     4     (history) peak.

Data from the city's commerce department shows a significant     5     (grow) of 129.4 percent in the accommodation and catering sectors during the period.

Wang Hongxin,     6     official from the city's tourism department, attributed this surge in tourism to Harbin's     7     (increase) popularity on social media platforms which transforms the city into a bustling holiday destination.

    8     (attract) more tourists and improve overall services, Harbin has rolled out an array of activities, including live performances     9     New Year's Eve, firework displays, theme parks, intangible heritage culture shows and concerts. So far a lot of measures     10     (introduce) to enhance the visitor experience in Harbin, covering sectors such as dining, accommodation, travel, shopping and entertainment.

Using a three-dimensional (3-D) transmission electron microscopy technique, a group of Chinese scientists have discovered a new phenomenon in the deformation (变形) of nanometals, which will help improve material design and engineering applications.

Huang Xiaoxu, a world-renowned scientist in the field of materials science,     1     (lead) a team at the College of Materials Science and Engineering of Chongqing University and its cooperators, created the world’s first 3-D microscopy technique system     2     tracked the rotations of individual grains in a nanograined nickel before and after in situ nanomechanical testing. The testing enables the observation of how the materials respond to applied stress in     3     (they) native state, which is fundamental to understand their mechanical     4     (property), said the research.

They found that the nanosized grains sometimes experience lattice rotations different from the     5     (theory) prediction. This unexpected lattice rotation occurs more often in the larger grains and is due to a phenomenon     6     (call) back stress, which generates the rotation.

Huang Xiaoxu’s team     7     (develop) 3-D microscopy techniques over the past 10 years. The microscopy is equipped     8     self-developed controlling hardware and software to enhance the efficiency of image collection and processing.

“In the past, with conventional microscopy, scientists could only observe the material deformation in a two-dimensional way,     9     often led to incomplete or even misleading results,” said Huang. “Now we can     10     (eventual) observe the deformation in 3-D, and our first finding using the technique.”

The groundbreaking Shaoxing Opera     1     (adapt), New Dragon Gate Inn, appeals to a new generation and revitalizes (振兴) the ancient art form for contemporary lifestyles.

In a specially     2     (design) studio theater in Hangzhou, East China’s Zhejiang Province, a world of jianghu     3     (bring) to life by a traditional Shaoxing Opera performance last week. Six actresses delivered     4     excellent show, which lasted two hours and 10 minutes.

The audience sat very close to the performers,     5     (enjoy) a unique and fascinating viewing experience.

Upon leaving the theater, these audience members felt a sense of satisfaction that encouraged them     6    (share) short clips (片段) of the performance online.

Based on the 1992 classic martial arts film of the same name, the Shaoxing Opera presentation shows spectacular artistic skills,     7     (successful) catching the interest of a younger audience by combining traditional Chinese opera     8     modern theater models and dramatic concepts.

As the play has gained popularity, Chen Lijun,     9     plays the important supporting role of Jia Ting, has become a social media sensation (引起轰动的人). Nicknamed the “Jade-faced Man”, Jia’s     10     (attract) appearance and good stage presence have got more attention.

Qingdao is a beautiful city, which is famous for the sea, and you can spend a happy time by     1     (lose) yourself in this wonderful city. Lying across the Shandong Peninsula while looking out to the Yellow Sea, Qingdao today     2     (consider) as a major seaport, naval base,and industrial center.

Together with the professional guide, you will visit the most     3     (attract) places in the city. From skyscrapers to parks and    4     (bench), you will have a great time. Qingdao has the second     5    (large) brewery (啤酒厂) in China. You will have a chance     6     (explore) the city of fascinating facts and legends,     7    (especial) great buildings full of much history. Some of them are Guest House, Pichaiyuan， Signal Hill, Qingdao Railway Station and Badaguan Scenie Area. You will be surprised at stories behind the streets, buildings, and corners. Your guide will tell you     8     is special and unique about living in this city. It is perfect for those     9     are visiting the city for the first time and want to get the most     10     it!

In the history of Chinese painting, the Wei, Jin, Northern and Southern Dynasties was a very important period. Gu Kaizhi, a painter of the Eastern Jin Dynasty, was     1     figure that had to be mentioned during this period.

Gu kaizhi was born in Wuxi, Jiangsu province in the year 344 and     2    (occupy) an important place in the history of Chinese literature. He was also a talented poet and calligrapher. Meanwhile,     3    (extreme) uninterested in fame and wealth, he made his living on the philosophy of “being half sly (狡黠) and half silly”     4     was given the title of “three excellences”, namely “excellence in poems”, “excellence in painting” and “excellence in stupidity”.

As the first painter     5     (maintain) influence on the development of Chinese painting, Gu Kaizhi not only created the basic model of figure painting, leaving     6     his most famous work, Nymph of the Luo River (《洛神赋图》 ), but also proposed the principles of painting     7     influence has lasted a thousand years, such as “realizing perfection through empathy”, “exposing spirit with form”, as well as his “six methods”.

The story of Nymph of the Luo River     8     (root) in historical records and the poetry of Cao Zhi, a prince and poet from the Three Kingdoms period. According to accounts, Cao Zhi wrote a poem called “Rhapsody of the Goddess of Luo” which described a goddess of extraordinary     9     (attractive).

Inspired by Cao Zhi’s poem, Gu Kaizhi set out to illustrate the charming nymph. His painting exhibits the soul of the poem,     10     (display) the nymph’s unique elegance and appealing charm. The work exemplifies Gu Kaizhi’s skill in bringing literary inspiration to life through art.