The Sanxingdui Ruins in Southwest China’s Sichuan province, together with the Jinsha Ruins in Chengdu, will apply for(申请) World Cultural Heritage status(世界文化遗产).

The Sanxingdui Ruins in the city of Guanghan, are thought to be one of the     1     (great) archeological(考古学的) finds of the 20th century. The ruins     2     (cover) an area of 12 square km are believed to be the remnants(遗迹) of the Shu Kingdom, dating back some 4,800 years.

The site was accidentally discovered by a farmer     3     he was digging a ditch in the 1920s. In 1986, a large number of unique relics were found in the No 1 and No 2 pits,     4     arouse global interest.

The discovery of Sanxingdui     5    (raise) an important question about the origin of Chinese civilization(文明). Before the 1980s, it is thought     6     the birthplace of Chinese civilization was in the Yellow River Basin in north China.

However, with the discovery of important     7    (relic) in the Yangtze River Basin, including Liangzhu, Shijiahe and Sanxingdui, a new understanding came     8     being. The ancient Shu civilization     9     (represent) by Sanxingdui has been regarded as     10     important part of the origin of Chinese civilization.

2 . To understand why humor is a kind of super food for the brain, you should know humor helps to know what our brains long for in the first place. You might think brains would prefer when we sit alone in a room and stare at a white wall—we don’t burn up much energy doing that. But the brain is like a muscle, and it needs exercise. What gives the brain a workout? Information. Humorous messages work best. When researchers asked people to look at a series of pictures while their brains were being scanned in a machine, it was the more complex pictures—a work of art, a group of animals that excited the neurons (神经元) in their heads most.

It’s the activity of those neurons, which, among other things, send and receive sensory information that “lights up” the scans in bright colors. In fact, there is an almost druglike effect taking place. The brain is filled with drug receptors (受体). Made of specialized proteins, these receptors stuck out of our neurons to pick up passing signals. The more neurons that are activated, the more pleasure we feel. In reality, learning and problem solving get us high as much as humor does.

Experts think that humor might feed the brain in much the same way that complex information does. People who study humor generally agree that most jokes are built around an improper, funny, surprising, or unusual combination of two basically different ideas. Humor has such great magic that we can develop it. We might as well start by telling jokes.

David Ho is one of the most famous     1     (scientist) in the world because of his research on AIDS. He was born in 1952 and he     2     (give) the name Da-i,     3     means “Great one” in Chinese.

David was interested in life sciences so he went to Harvard Medical School.     4     was there that he first saw people who had AIDS. In     5     early 1980s, AIDS was almost unknown and David decided     6     (study) this mysterious killer disease. He discovered that the HIV virus could live in a healthy person's body for years and realized that the     7     (early) a person with HIV is treated, the longer they will live.

Because of his     8     (contribute), the lives of thousands of people have been saved. Today, his research is focused on     9     (make) a vaccine (疫苗) against AIDS. If David     10     (find) a vaccine for AIDS, he will become an international hero.

6 . A copy of Edward Said’s Culture and Imperialism sits next to an old edition of Ian Fleming’s Gold finger. Classic novels by George Orwell and Ursula K. Le Guin lie on other shelves along with literature and classics in English, German, French and Russian.

These are just some of the 350 books housed in the “Travellers’ Library”, a two-story wooden house on the bank of a beautiful lake. Its creator is 50-year -old Muhammad Latif Oata—a school dropout. While Oata lacks the required schooling to read these books himself, the stories in them hold great value to him. Forced to drop out of school to support his family, Oata was only 16 when he moved to a strange city where he sold some items from his home state.

One day, a foreign tourist passing by his stand gave Oata a book. Unable to read, he asked the tourist to tell him the story in it. It was about a poor young girl who gained success through continuous effort and struggle. Inspired by the story and hungry for more, he began a barter system where anyone borrowing a book would have to give one in return and tell him a story.

Oata’s collection grew to around 600 by 2003, but floods damaged around 200 of them later. “They are my most prized things,” Oata says with pride in broken English he has picked up from communicating with tourists. When Oata returned to the valley in 2007, he set up a small travel agency with a library for visitors to enjoy.

Over the past year, however, the trouble in the state has led to fewer travelers and Oata’s business has also suffered. How long will he take care of the books and keep his small library open and available for people in need? “As long as I am alive,” he says with a smile. “And even when I am gone, these books will remain there because books always find their readers.”

8 . It was about 10 p.m. on October12, 2020. Paul Wilson and his friend Tina Stern were stepping out of the elevator (电梯) of her apartment building when they _________ smoke. “My dogs!” Tina shouted with _________ as she ran down the hall to her apartment. Paul 54, who is _________, walked carefully toward the smoke.

“I was _________ across from Tina's apartment door, I slowly took four or five steps to the right, and smoke hit me right, and smoke hit me right in the face.” Paul said, “I _________ the door, shouting, ‘Anybody home?’ _________, nobody answered.”

Suddenly the door opened, and more _________ more out Paul heard coughing and reached behind the door, waving his arm until he _________ someone. It was Diane, who lived there. He took her arm and pulled her into the hall, then ran back to the _________ apartment with Tina.

He and Tina picked up the fire extinguisher (天火器). While Paul held it, he __________ Tina to use it to fight the fire. __________, the fire finally died down.

Diane had fallen asleep when cooking on the stove, and it had __________ the fire. She later called Paul to __________ him. “I could have died without your help.” she said.

As it turned out, __________ fires was just second nature to Paul—he had been a __________ with the St. Lucie County Fire District for about 2 years in the 2010s. He __________ a serious eye disease in 2013 and lost his sight.

Last November, the St. Lucie County Fire District awarded (颁奖) him and Tina the Citizen Hero Award for their __________ actions. When asked what he was __________ at that moment, Paul said, “I was not __________ at all. I just knew it was __________ that I had to do.”

The Lantern Festival, a     1     (tradition) Chinese festival, is celebrated on the 15th day of the first lunar month. It is a continuation of     2     (celebrate) the Spring Festival.The day leads to the first full moon night of the year, and is also the night when the earth returns to spring. During the Han Dynasty (206 BC—AD 24), more than 2,000 years ago, Emperor Wen ordered that the 15th day of the first lunar month to be dedicated to the Lantern Festival. It was also a romantic festival in ancient China, providing     3     opportunity for unmarried men and women to meet.

In ancient times, young women,     4     (especial) daughters of eminent families, hardly     5     (step) out their houses. But during the Later Festival, it was a tradition that all people, including those young women, come out for lantern shows. Watching lanterns at night was just an opportunity for young women to find a man     6     appearance appealed to them. Another activity, guessing the answers     7     lantern riddles, gives young people a chance to interact with each other and know more about each other. Riddles     8     (write) on the lanterns can inspire wisdom and cater to the festival atmosphere, so many people like it very much. Eating yuanxiao on Lantern Festival is another tradition. Yuanxiao     9     (make) of glutinous rice, either solid or stuffed. It can be boiled, fried or steamed     10     (eat).