The Qingming Festival by the Riverside, which     1     (measure) 24.8 by 528 cm, is now in the collection of the Palace Museum in Beijing. It portrays street scenes of Bianjing, the capital of the Northern Song Dynasty (960—1127). The work was created by Zhang Zeduan, a native of Shandong Province,     2     studied painting in his early years. Later, Zhang became a painter for the Imperial Painting Academy of the Northern Song Dynasty.     3     the fact that there aren’t many historical records about Zhang, his name is remembered     4     (simple) due to this masterpiece.

The painting features magnificent and complex scenes with a rigorous structure, which can     5     (divide) into three parts: scenes of the suburbs, Bian River and city streets. Some interesting scenes are presented     6     great detail. In the suburban scene, farmers are working in the fields and     7     (wealth) people are returning home. The street is crowded with people on horseback, wheel carts and sedan chairs. The scene of the Bian River is the most magnificent: The arched bridge stands like a rainbow over the river with streams of people     8     (move) about. Under the bridge are many boats competing for the right of way. All such elements reveal the     9     (painter) supreme painting skills and his careful     10     (observe) of life.

The world’s oceans reached their hottest level in recorded history last year, supercharging (加剧) extreme weather events, scientists have reported. They found that the five hottest recorded years in the oceans     1    (occur) since 2015, and that the rate of heating since 1986 was eight times higher than     2     from 1960-85. Oceans cover 71% of the planet and water can absorb thousands of times more heat than air,     3     is why 93% of global heating is taken up by seas.

Hotter oceans destroy rainfall patterns, which     4    (lead) to floods, droughts and wildfires. Heat also causes seawater     5     (expand) and drives up sea levels. Scientists expect about one metre of sea level rise by the end of the century,     6    (threaten) 150 million people. Higher temperatures in the seas are also harming marine (海洋的) life, with     7     number of ocean heatwaves increasing     8    (sharp).

The study also finds that the sinking of surface waters and upwelling of deeper water is reducing as the seas heat up. This means the surface layers heats up even further and fewer nutrients for marine life are brought up from the     9    (deep).

“The oceans reached yet another new record level of warmth in 2020,    10     a record drop in global carbon emissions (排放). The planet will continue to warm up as long as we emit carbon into the atmosphere,” said Prof Michael Mann of Penn State University.

China will start engineering the     1    (four)phase of its lunar exploration program this year, China National Space Administration(CNSA)Vice Administrator Wu Yanhua said on Sunday.

The major goal for the phase-4 lunar program is     2    (conduct )scientific exploration at the lunar south pole in order to facilitate the     3    (construct)of a basic structure for a lunar research station in the region. “It would be     4     science station open to all and openly run by different countries and organizations together,” Wu told CGTN. Wu also said the moon base development would be a three-step process,     5    (feature)openness and international cooperation.

“In the first step, we hope to survey and build some necessary facilities in 10 years,” he said. “And in the 10 years or so after the first stage, we look to build a     6    (relative)all-around science station, with engagement from different countries, organizations, including private-sector participation.” He said the third stage would be operation,     7     the station would provide good     8    (science)conditions for global scientists.

Since 2016, China     9    (celebrate)its space achievements every year on April 24. The space program often reveal big projects on the date. In addition     10     lunar missions, China is planning to build an asteroid defense system, which can detect asteroids(小行星)that may hit the Earth and try to reduce the risk.

Figure skating     1     (come) a long way since its beginning. Back in the 18^th century in the UK, the sport was popular among the people in the highest social class.     2     (gradual), more skating enthusiasts from Germany, the United States and Canada     3     (follow) suit. In the 1860s, Jackson Haines,     4     US ballet dancer and skater, used more artistic moves to make the sport less formal, earning him the title of “the father of modern figure skating”.

Skaters wearing eye-catching trousers, tights or skirts perform     5     (vary) movements. Skaters can compete     6     individuals, pairs or groups. Skaters need to complete two components; short program and free skate.

Figure skating requires the athletes to focus on both technical and performance     7     (aspect) of skating. “A really good skater needs to be able to look effortless when they perform their elements. Without     8     (strong), courage and years of practice, it’s really hard     9     (achieve) that goal and make an emotional connection with audience.” Olympic gold medalist and US retired skater Scott Hamilton told CNN. “And that’s     10     I liked about it.”

When you hear the word “shapeshifting” (变身), you may think of sci-fi movies, and not the climate. But that’s     1     animals are doing to deal with climate change. A new study shows that some animals are     2     (gradual) growing larger beaks, legs and ears. In this way they can lose heat more easily     3     (cool) themselves down as Earth gets warmer. “A lot of the time when we talk about climate change, we ask ‘Can humans overcome this?’ or ‘What technology can solve this?’ But we should know that animals also have to adapt     4     these changes,” said the study’s author Sara Ryding, from Deakin University, Australia. If animals fail to control     5     (they) body temperature, they can overheat and die. In one example, the beaks of some Australian parrot species     6     (grow) 4 to 10 percent larger since 1871. The study says it’s closely related to the     7     (rise) summer temperatures over the years. Similar examples include wood mice. They have longer tails, and bats in warm climates have bigger     8     (wing).

Although the changes are still small, Ryding said they could be     9     (obvious) as the days become hotter. “Body parts like ears are predicted to be bigger,     10     we might end up with a live-action Dumbo (big-eared elephant from a Disney cartoon) in the near future,” Ryding told BBC.

The home of the future won't be     1    (complete) different and we will be living in houses and flats just as we do today.     2    (build) in different shapes, no two homes will look the same. People will be able to buy “house kits” containing a basic house structure, with adjustable walls, doors and windows. They will put together the different parts     3     (create) the home they want.

Space holidays will develop in the future, but these holidays won't be for everyone because they are     4     (expensive) than holidays on the earth. Short space trips will develop first, then the space hotels will go around the earth     5    it will be possible to have a longer vacation. By     6    end of the next century, there will be holiday centres on the moon with leisure facilities for families.

According to the laws of physics, the earth is going to    7    ( appear) some time in the future. This isn't going to happen tomorrow but scientists predict that it will happen in five billion years when our sun    8    (explode).     9     a result,we will have to explore the universe and find another home. At some point in the distant future, either we stay on the earth and die with it,or we leave and move to another planet. There won't be any other    10    (choose).