1 . With about 1,000-meter-high steep cliffs (陡峭的悬崖) around, there Xiazhuang, Chongqing had only one pathway out of the village, and it took villagers three days to walk to the main town. People there used to risk their lives going out of the mountain village. In the 40 years to 1997, 23 people had died from falling off the cliff while cutting firewood or travelling to the county seat, and 75 people had been injured or disabled while doing the same activities. Then, village head Mao Xianglin held a meeting in 1997 and suggested building a road snaking along the mountains, but almost no villager agreed because they had no money, no machines and no confidence to take on the tough project.
Later that year, around 100 people volunteered to do the work after Mao’s efforts. Workers from ropes and used hammers, drills and even explosives to create the road. Falling rocks and other dangers led to the deaths of six villagers. When they slept in caves (洞穴) at night, they tied a rope around their bodies with the other end tied to the root of an old tree to make sure they did not fall off the cliff.
“Mountains had isolated us from the outside for generations. We had to do something to ensure the next generation could go out of the mountains for a good life,” Mao said. When the 8-kilometer road was completed in 2004, it enabled many villagers to travel out and find work. Incomes increased as a result. Mao will retire in five years, planning to widen the current road and focus on ecotourism. “The spirit of the Xiazhuang people can’t be lost and has to be passed down from generation to generation,” he said.
1. What is Paragraph 1 mainly about?| A．The history of the village. | B．The development of the village. |
| C．The specific deaths in the building. | D．The reason for building the road. |
| A．It was a tough task. | B．It caused 100 deaths. |
| C．It was far from dangers. | D．It made workers sleep soundly. |
| A．Attracted. | B．Separated. |
| C．Contacted. | D．Gathered. |
| A．Frightened. | B．Determined. |
| C．Distant. | D．Curious. |
2 . On the 100th anniversary of the Communist Party of China (CPC), red tourism has gained popularity among tourists who flood in to visit historic sites with a modern revolutionary heritage.
Jinggangshan
This is one of the most crucial and splendid chapters of history of establishing Red China as well as a unique and wonderful ecosystem, which is covered with rich forest, rugged peaks and several memorials to the Red Army. The best time to visit is between April and October, with the most temperature timing April and May when the large azaleas (杜鹃花) bloom.
Open: 8:00-17:00 (Feb. 16-Nov. 15). 8:00-16:30 (Nov. 16-Feb. 15)
Xibaipo
It is an old revolutionary base where the leadership of the Communist Party of China was stationed, drawing up the blueprint for a new country. A memorial hall was built to honor the memory of this site. The lake and the hill here add brilliance and beauty to each other and form pleasant scenery.
Open: Tuesdays to Sundays 9:30-17:00 (Xibaipo Memorial Hall)
The Nanhu Revolutionary Memorial Hall
A new exhibition is held with updated display approaches, including phantom imaging (全息影像) and oil painting, which are used to improve visitors' experiences. The exhibition shows four stages of the CPC from its establishment to its achievements.
Open: Tuesdays to Sundays 8:30-18:00 (closed on Mondays)
Former Site of the Editorial Department of New Youth
New Youth started the New Culture Movement and spread the influence of the May Fourth Movement. The site was briefly based in Beijing but moved back to Shanghai in 1920 and also served as the office for the Communist Party of China Central Committee in the 1920s.
Open: Thursdays to Tuesdays 9:00 - 11:30, 13:30 - 16:30 (closed on Wednesdays)
1. Where would visitors learn more about the history of the Red Army?| A．Jinggangshan. |
| B．Xibaipo. |
| C．The Nanhu Revolutionary Memorial Hall. |
| D．Former Site of the Editorial Department of New Youth. |
| A．It focuses on Chinese achievements in art. |
| B．It mainly advertises the coming anniversary. |
| C．It applies modernized methods to the exhibition. |
| D．It briefly introduces the rise and fall of Nanhu. |
| A．At 1:00 p.m. on Mondays. | B．At 9:00 a.m. on Wednesdays. |
| C．At 2:00 p.m. on Fridays. | D．At 5:00 p.m on Sundays. |
3 . Could looking through trees be the view to a greener future? Trees replacing the clear glass in your windows is not a work of science fiction. It's happening now.
Forest Products Laboratory researcher Junyong Zhu together with colleagues from the University of Maryland and University of Colorado has developed a transparent wood material that may be the window of tomorrow. Researchers found that transparent wood has the potential to outperform glass currently used in construction in nearly every way.
While glass is the most common material used in window construction, it comes with quite a few bad consequences. Heat easily transfers through glass and amounts to higher energy bills when it escapes during cold weather and pours in when it's warm. Glass production used for construction also comes with a heavy carbon footprint. Manufacturing emissions alone are approximately 25,000 metric tons per year, without considering the heavy footprint of transporting the glass.
The innovation was developed using wood from the balsa tree, which is native to South and Central America. The team treated balsa wood to an oxidizing bath, where the wood is kept in a bleach solution at room temperature to remove the light-absorbing substance from the structure. The wood is then penetrated（注入）with a synthetic polymer called polyvinyl alcohol（PVA）, creating a product that is virtually transparent. So the transparent wood is created, which is far more durable and lighter than glass.
Switching to transparent wood could prove to be cost efficient as well. It is approximately five times more thermally efficient than glass. cutting energy costs. It is made from a sustainable, renewable resource with low carbon emissions.
With all of these potential benefits for consumers, manufacturing and the environment, the case for transparent wood couldn't be clearer.
1. What is the main problem with glass used in window construction?| A．It is inefficient in letting heat out. |
| B．It does not reflect light and heat. |
| C．It cause a high ecological cost |
| D．It is inconvenient to transport. |
| A．A liquid to make objects white. |
| B．A process to solve problems. |
| C．A container to store liquids. |
| D．A way to make colors fade. |
| A．How to make things transparent |
| B．How to produce the new material. |
| C．The benefits of the wood material. |
| D．The great importance of innovation. |
| A．Skeptical. | B．Ambiguous. |
| C．Conservative. | D．Appreciative. |
4 . The Lantern Festival falls on the fifteenth day of the first lunar month. This is the first full moon of the new year, symbolizing unity and perfection. Lantern festival is an important part of spring festival, and marks the official end of the long holiday.
There are two legends(传说) about the origins of Lantern Festival.According to one legend, once in ancient times, a swan was shot down by a hunter. The emperor decided to avenge(替...报仇) the swan. He started to send the soldiers with orders to burn all humans and animals. But the other swans disagreed with this action, and risked their lives to save people on earth. As a result, before and after the fifteenth day of the first month, every family hung red lanterns outside, giving the impression that their homes were already burning. By successfully tricking, human was saved from extinction.
According to the second legend, during the time of Emperor Wu of the Han Dynasty, a palace woman named Yuanxiao was prevented from visiting her parents on the fifteenth day of the first lunar month. Sadly, she said she would kill herself. In order to help Yuanxiao, the scholar Dongfang Shuo told Emperor Wu that the jade emperor had ordered the fire god to burn down the capital city on the sixteenth day of the first lunar month. Anxiously, the emperor asked Dongfang Shuo what he should do. Dongfang Shuo advised that the streets be hung with red lanterns. And everyone would go to view the lanterns. In this way, the fire god would be distracted and disaster would end. The emperor followed Dongfang Shuo’s advice, and while everyone was out viewing the lanterns, Yuanxiao left the palace in secret and reunited with her parents.
Although the above stories are quite fantastical, it is sure that the origins of the Lantern Festival are related to ancient humanity’s use of fire to celebrate festivals and avoid disaster.Over time, the Lantern Festival gradually turned into its present form.
1. The structure of the passage could be outlined as:____________.| A．①-②③④ | B．①-②③-④ | C．①②-③④ | D．①②-③-④ |
| A．The other swans agreed on the emperor to kill the people on earth. |
| B．Yuanxiao was a palace woman who wanted to escape from the palace. |
| C．Dongfang Shuo was a wise scholar to help solve the problems. |
| D．Every family hung red lanterns outside to burn the soldiers. |
| A．The Lantern Festival’s present form. | B．The Lantern Festival’s original form. |
| C．The Lantern Festival’s food varieties. | D．The Lantern Festival’s celebrations. |
| A．Some activities related to the Lantern Festival |
| B．The long holiday of the Lantern Festival |
| C．Some respectful person about the Lantern Festival |
| D．The origins of the Lantern Festival |
5 . Teaching Positions in Institute for Artificial Intelligence at Baking University
Announced and set up in 2019, the Institute for Artificial Intelligence at Peking University (abbreviated as PKU-IAI) serves as a backbone to connect all AI related research and applying activities in Peking University. The PKU-IAI aims to make both a big leap into the future, and a natural next step for an institution that has been at the forefront of artificial intelligence from the start. The PKU-IAI also aims to enable Peking University to play the role of a worldwide leader in the responsible and ethical evolution of technologies that are ready to transform society.
The PKU-IAI is now providing open teaching positions, including the fields of the following:
·Natural Language Processing
·Machine Learning
·Robotics
·Intelligent Software Systems
·Intelligent Healthcare
·Computational Social Science
Requirements
1. The applicants should have a solid background and produced influential research results or development experiences in the mentioned fields of artificial intelligence.
2. The applicants are expected to be under the age of 40, and obtain a Ph. D. from well-known universities within recent 5 years and have outstanding research and development records.
Salary and Working Conditions
The university and the research group provide competitive salary and working conditions for successful applicants.
Application Procedures
1. The applicants should send a detailed CV, research statement, teaching statement, a future plan of the next 3-5 years to aipku@pku.edu.com. The title of the email should be in the form of “Teaching Application to PKU-IAI”.
2. The first round of interview will take place at the same time with the online Young Scientists Forum. This forum will also serve as an exciting chance for the young researchers to exchange academic ideas and latest information.
Important Dates
·Application Submission Deadline: May 2nd, 2021
·Forum-Acceptance Notification: May 14th, 2021
·Young Scientist Forum May 22nd，2021
·Next round of interview: May 30nd, 2021
1. The position for the field of ______ is not provided.| A．Machine Learning | B．Natural Language Processing |
| C．Brain Inspired and Al Chips | D．Intelligent Healthcare |
| A．The title of the application emails should go as requested. |
| B．The applicants graduating from any university are welcomed. |
| C．The requirement for the salary must be included in the email. |
| D．The applicants are supposed to be under the age of thirty five. |
| A．May 14th, 2021 | B．May 2nd, 2021 | C．May 30st, 2021 | D．May 22nd, 2021 |
6 . For 300 years, the Slims River had been flowing through Canada’s Yukon region. But last year, in only four days, the water in the big river reduced sharply, which made the river almost disappear. What happened?
After a year of careful studies, a group of scientists recently said that the sudden change of the river was caused by climate change. The Slims River used to be a big river, reaching up to 150 metres at its widest points. It carried melt water from the huge Kaskawulsh glacier(冰川) into the Kluane River, then into the Yukon River toward the Bering Sea.
But in spring 2016, there was a sharp melting of the Kaskawulsh glacier because of climate change. It made the melt water run in a different direction, and into a second river, the Alsek River, then into the Gulf of Alaska. It is thousands of kilometers away.
In geography, this is called “river piracy”. Although it was not unusual in ancient times, this is the first time it has happened under scientists’ noses in modern times. The Slims River is almost dry now, which also takes away the clean air in the region because strong wind blows up all the dust in the river bed. Fish have already swum to other rivers. And sheep from Kluane National Park are now coming down to eat the fresh plants.
Lonnie Thompson, a scientist from Ohio State University, the US, said that we could hardly feel the effects of climate change in our daily life, but the case of the Slims River shows what will happen when gradual temperature increases.
1. Why did the Slims River almost disappear?| A．Because the air pollution brought more rain to Yukon region. |
| B．Because the climate suddenly became hotter than before. |
| C．Because the human activities destroyed the banks of the river. |
| D．Because the Kaskawulsh glacier did not exist any longer. |
| A．The Slims River has now become part of Kluane National Park. |
| B．The air in the region of the Sli ms Ri ver is still clean. |
| C．Climate change has no effect on our daily life. |
| D．Global warming can bring sudden changes to the environment. |
① the Kaskawulsh glacier ② the Gulf of Alaska
③ the Yukon River ④ the Alsek River
⑤ the Bering Sea ⑥ the Kluane River
| A．①→④→② | B．①→③→⑤ |
| C．③→⑥→⑤ | D．⑥→③→② |
| A．A river suddenly disappears without any reason. |
| B．Two rivers join together to make a bigger one. |
| C．The flow of a river is suddenly taken away into another. |
| D．The water in a river reduces sharply. |
7 . When I became a junior, I decided to take
But Latin classes were so
When Mr. Keady asked what was wrong, I
Instead, he sat at his desk
In the following weeks, Latin class didn't become the exciting learning environment I hoped it would, but Mr. Keady did try harder. He brought in some new worksheets and
Maybe some people would
Indeed, Mr. Keady's
| A．biology | B．English | C．Latin | D．French |
| A．anxious | B．curious | C．certain | D．excited |
| A．come across | B．go over | C．come along | D．pick out |
| A．inspiring | B．boring | C．interesting | D．enjoyable |
| A．routine | B．game | C．necessity | D．movement |
| A．set up | B．build up | C．put up | D．spread out |
| A．admitted | B．explained | C．doubted | D．wondered |
| A．unfamiliar | B．attractive | C．old-fashioned | D．effective |
| A．assumed | B．reminded | C．advised | D．allowed |
| A．quietly | B．happily | C．angrily | D．wildly |
| A．practice | B．silence | C．disappointment | D．excitement |
| A．carefully | B．actively | C．creatively | D．little |
| A．failed | B．hated | C．attempted | D．refused |
| A．blamed | B．protested | C．ignored | D．clapped |
| A．regretted | B．appreciated | C．feared | D．believed |
| A．experience | B．lesson | C．theory | D．approach |
| A．unkind | B．grateful | C．comfortable | D．awesome |
| A．stopped | B．hurt | C．tricked | D．judged |
| A．response | B．decision | C．thought | D．quality |
| A．take over | B．take away | C．take up | D．take in |
8 . Whether you’re travelling to the islands or the mountains of Thailand, you’re likely to spend at least one night in its capital city on the way. Bangkok might be noisy and polluted but it’s also an exciting city with plenty of things to see and do. Why not make it a longer stay?
Where to stay
The Khao San Road was a famous traveller spot even before Leonardo di Caprio’s character in the film The Beach stayed there. But it’s noisy, not very pretty and not very Thai. For something more authentic, Phra Kanong offers an alternative place to stay, with its fantastic street markets where everyday Bangkok people eat, work and live. It’s not as convenient for the main tourist sites, but it has a Skytrain station so you can be at the Grand Palace in 20 minutes.
How to get around
Bangkok’s traffic can be a nightmare. Sure, you can easily take a taxi – if you want to spend hours stuck in traffic jams – but there are two much better ways to get around the city. To explore the temples and historical sites, catch an express boat river taxi or a longtail boat along the Chao Phraya river and the canals. For the modern part of the city, the Skytrain is a fast, cheap way to travel from the river to the shopping malls and nightlife of Sukhumvit, and the famous Chatuchak street market.
Where to eat
The simple answer is: everywhere! Thai street food is among the best in the world, and for around $5 you can eat a filling and delicious meal. Some food stands have little plastic seats where you can sit and eat and they cook the same dish over and over, like fried chicken on rice or Pad Thai noodles. Head for Chinatown – Yaowarat Street – and choose whatever looks most interesting from the many excellent Chinese and Thai restaurants and food stands.
1. Where can you experience local people’s life ?| A．Khao San Road. | B．Phra Kanong. |
| C．Sukhumvit. | D．Yaowarat Street. |
| A．One night is enough time to see Bangkok. |
| B．The river boat taxis often get stuck in traffic too. |
| C．Taking the Skytrain is a faster way to see the city than going by taxi. |
| D．You need to choose where to eat carefully, as not everywhere is good. |
| A．A text book. | B．A science report. |
| C．A guidebook. | D．A book review. |
9 . The stage lights dimmed, and I took a quick look from behind the heavy black curtains into the audience.
After a decade of learning this art form, I had
The performance is undertaken only by the most
I
Fortunately, I made it. What I had done
| A．Lit | B．Blinded | C．Shocked | D．Warmed |
| A．breath | B．rest | C．thought | D．sorrow |
| A．career | B．attempt | C．performance | D．response |
| A．absolutely | B．finally | C．easily | D．desperately |
| A．time | B．dance | C．event | D．problem |
| A．success | B．truth | C．symbol | D．mark |
| A．beautiful | B．intelligent | C．considerate | D．focused |
| A．talent | B．commitment | C．strength | D．organization |
| A．recording | B．practising | C．designing | D．discussing |
| A．addicted | B．treated | C．pushed | D．applied |
| A．reflect | B．research | C．forget | D．learn |
| A．discovered | B．devoted | C．controlled | D．shared |
| A．brilliant | B．brave | C．stubborn | D．discouraged |
| A．careless | B．nervous | C．frightened | D．wrong |
| A．function | B．level | C．action | D．stress |
| A．live up to | B．come up with | C．put up with | D．give in to |
| A．preparation | B．limit | C．purpose | D．destination |
| A．expanded | B．increased | C．deserved | D．exposed |
| A．completely | B．chiefly | C．originally | D．truly |
| A．achieve | B．supply | C．change | D．explain |
10 . For hours I had been traveling up the Nile Valley, from Luxor to Cairo, on a train jammed with Egypt’s working poor. At 1 a.m. I reached Cairo and took a taxi to Tahrir Square, the city’s center. The taxi
In my broken Arabic I asked when they had last eaten. About 16 hours ago, they said. I asked them to wait while I went inside. Since I was traveling with
I ordered two hamburgers for the boys. Then
I knelt down beside them, and
I had seen many
| A．left | B．threw | C．dropped | D．sent |
| A．boys | B．girls | C．women | D．men |
| A．souvenirs | B．water | C．money | D．food |
| A．provided | B．limited | C．balanced | D．lost |
| A．skipping | B．taking | C．preventing | D．forgetting |
| A．brought up | B．accounted for | C．identified with | D．lived with |
| A．rich | B．sensitive | C．honest | D．cold |
| A．requiring | B．defeating | C．keeping | D．enjoying |
| A．cookies | B．chocolate | C．burgers | D．chips |
| A．flooded | B．shared | C．cheated | D．accompanied |
| A．bought | B．caught | C．put | D．offered |
| A．asleep | B．wordless | C．sad | D．sick |
| A．argued | B．claimed | C．doubted | D．determined |
| A．asked | B．refused | C．suggested | D．returned |
| A．watched out | B．appealed to | C．looked into | D．glared at |
| A．nearly | B．hardly | C．mainly | D．only |
| A．unwilling | B．unexpected | C．unhappy | D．unbelievable |
| A．discussion | B．round | C．attempt | D．trip |
| A．challenges | B．situations | C．changes | D．wonders |
| A．accident | B．phenomenon | C．mission | D．scene |
