What do the five Olympic signs on the flag represent?     1     is widely believed that the five-riing Olympic symbol was created by Frenchman Pierre De Coubertin in 1913. As the founder of the modern Olympic Games, he wanted     2    (celebrate) the 20the anniversary(周年纪念) of the Games and chose a design of five rings,     3     represented the five continents(洲) taking part in the Games. The rings     4    (become) the official Olympic symbol at the 1920 Games in Belgium.

Pierre de Coubertin thought that the five interlocking rings meant the five continents     5    (compete) in the Games and the meeting of their athletes at the Olympic games.     6    (actual) every part of the modern Olympic symbol and flag shows the main purpose of the Games in a particular way. The Olympic flag, with its familiar rings, is used as     7     international symbol of peace, unity and     8    (agree). The white background of the flag stands     9     peace and truth.

At the end of each Olympic Games, the mayor(市长) of the hosting city passes the Olympic fag to the mayor of the city where the next Olympics     10    (hold) for years later. The flag remains there until the next Olympics.

Yu Rong, a famous artist, thinks of a new way to introduce the ancient story of Hua Mulan in her picture book. In the book, I Am Hua Mulan, she tells the story by    1     (combine) paper cutting with international artistic styles. She places paper-cuts over western-style pencil sketches(素描)    2    (create) a typical presentation of Chinese elements, which turns out to be a    3    (success) and impressive breakthrough.

Hua Mulan,    4    story has been told by generations in China, was a fighter from the Northern Wei Dynasty(386-534). As    5    devoted daughter, she dressed herself as a man to serve in the army    6    place of her father.Mulan's characteristics, such as courage, kindness and disinterest in fame and fortune, made    7    (she) one of the most respected historical Chinese heroines. Mulan's story has been adapted    8    (frequent) in the modern media. For example, in 1998, Disney produced a film named Mulan, which    9    (consider) a great success by critics and the public.

To better tell the story, Yu Rong draws inspiration from her several    10    (visit)to sites of ancient battles and Henan Opera.

Northwest China’s Ningxia Hui Autonomous Region has adopted digital technology     1     (preserve)ancient cliff(悬崖) carvings and paintings before their disappearance.

Workers have copied more than 2,000 immovable rock carvings and paintings at Helan Mountain to digitalize the overall views as well as     2     (they)accurate locations. The digital information will be sorted and-workers will conduct a disease analysis.

Rock carvings     3     (appear)before writing systems were invented. Now, more than 20, 000 cliff paintings and carvings     4     were created by the ancestors have been discovered at Helan Mountain. The works record the lives of the people who lived 3, 000 to 10, 000 years ago. In general,     5    (image)of animals dominate(占主要地位), followed     6     humans, vehicles, plants, planets, fingerprints and abstract signs. The surfaces were     7    (main)carved with stone or metal in the open air,     8    (expose)to weather beaten.

The protection of rock paintings and carvings is a worldwide issue. At present, there is no     9    (effect), naturally scientific and technological means to prevent their disappearance. Some experts have predicted that by the end of this century,     10     quarter of the world’s rock paintings will disappear completely.

The person I respect most is the geophysicist Huang Danian,     1     helped China to make great technological advances.

Huang was a     2    (remark) scientist. He     3    (live) in Britain for eighteen years, but when he felt that     4    (he) country needed him, he     5    (give) up his well-paid job and returned to China. Over the next seven years, Huang worked to develop many devices     6    (need) for deep- earth exploration.

    7    (Fortune)， such     8    (achieve) didn’t come cheap. Due to the frantic pace of his research, Huang was absent     9     his father’s funeral, and even his own cancer went undetected as he had no time to see a doctor.     10     sum up, Huang sacrificed everything for his research and I think more people should honor him.

6 . Mark Twain, born in Florida     1     November 30th, 1835,     2    (bring) up in Hannibal, Missouri, along the Mississippi River. He is best known for his     3    (novel) set in his boyhood world on the river, such as The Adventures of Tom Sawyer and The Adventures of Huckleberry Finn. So much     4     he love the river that even his pen name was about the river. The phrase “mark twain” means that the water is two fathoms in     5    (deep). The play in this unit is adapted from The Million Pound Bank Note     6    (write) by Mark Twin. It was the summer of 1903,     7    two wealthy brothers made a bet. One of them doubted     8     a man could survive a month in London with a million pound bank note. At this moment, they saw a penniless man     9    (wander)on the pavement. It was Henry,     10     American businessman, who was lost in London.

Travelling around the Sydney district (地区) is a wonderful experience.

The sightseeing options (选择) are     1     (end), but most travelers begin on the harbor at the Sydney Opera House.    2     (know) as one of the wonders of the world, it is a photographer's dream.

There is a huge     3     (choose) of accommodations available in the city and its surrounding area. Darling Harbor is famous     4     its restaurants and four-star hotels. Under the famous Sydney Harbor Bridge is the Rocks shopping district, which     5     (call) “the heaven of shoppers”. You can spend at least a half day     6     (wander) through the alleys and side streets to take in everything the shops offer. On the other side of harbor     7     (lie) another must-visit spot, the Taronge Park Zoo. With an exciting collection of native animals, including lions and giraffes,    8     is rare to find a zoo with a view of Darling Harbor and the city skyline.

The Royal Botanic Garden is within walking distance of the Opera House, and is an absolutely perfect place for a picnic lunch. After lunch, take a walk to Sydney Tower,    9     you can get 360-degree     10     (forget) views of the city.

Xu Guanghan Someday or One Day

Xu Guanghan's name was so popular at the beginning of 2020     1     there are only two types of girls : Xu Guanghan's girlfriends and girls     2     don't know him . Before Someday or One Day, a TV series,     3     ( broadcast) , Xu had been a new actor who could only play supporting roles for a long time . After college     4     (graduate), he had no acting opportunity , and even had to do part-time jobs to make a living while    5     ( go) to auditions. Then, he had been hidden     6     purpose for a year because of his contract issue.     7     is hard for anyone who has seen his performance to believe that he didn't study acting. Once a reporter asked, “Do you want     8     (call) a handsome guy, a handsome actor, or     9     individual actor?” He replied, ^“A real actor of course." He takes acting     10     (serious).

In the 1880s, the first automobile (汽车) was developed, and about two decades later, the Wright brothers in North Carolina invented the first successful airplane. Today, the world is closer to     1     (combine) those two concepts because a Japanese tech company said it completed a manned test flight of a “flying car.”

The company, SkyDrive, said in a news release Friday that it had completed a flight test using “the world’s first manned tested machine’’, an electrical vertical (垂直的) takeoff and landing (eVTOL) vehicle, and     2    the flight time was four minutes.

The aircraft had one seat and     3    (operate) with eight motors and two propellers (螺旋桨) on each corner. It lifted about 10 feet     4     the air and was operated by a pilot, the company said.

Tomohiro Fukuzawa, SkyDrive’s chief executive, said that five years ago there     5       (be) various prototypes of flying cars, usually with fixed wings. SkyDrive’s product, he said, was one of the most compact (体积小) in size and was     6     (light), compared with other designs.

    7     (safe) is one of two challenges preventing the technology from becoming     8     (wide) used, said Derya Aksaray,     9     assistant professor of aerospace engineering and mechanics at the University of Minnesota. Safe autonomous technology for eVTOL aircrafts is still being developed, Aksaray said.

The other challenge is design: The vehicles should be powerful enough     10    (carry) any necessary weight, yet quiet enough to fly at undetermined low altitudes, she said.

A company     1     (name) “Future Tours” transported Li Qiang and his friend Wang Ping     2     (safe) into the future in a time capsule. They climbed in through a small opening and soon the journey     3    (complete). They were still on the earth but 1,000 years in the future.

Confused by the new surroundings, Li Qiang was hit by a lack of fresh air. Li Qiang chose     4     hovering carriage driven by computer and began     5    (move). There were so many carriages     6     he lost sight of Wang Ping. A few minutes     7    (late), Li Qiang caught sight of Wang Ping.

    8    (arrive) at a house, he was surprised to see tree     9    (leaf) surrounding the house and they provided the house with much-needed oxygen.     10     a good dinner, Li Qiang felt exhausted, so he slid into bed and fell fast asleep.