2 . Paris is the capital of the European nation of France. It is also one of the most beautiful and most famous cities in the world.

Paris is called the City of Light. It is also an international fashion center. What women are wearing in Paris will be worn by women all over the world. Paris is also a famous world center of education. Foe example, it is where the headquarters of UNESCO, the United Nations Educational, Scientific and Cultural Organization.

The Seine River divides the city into two parts. Thirty –two bridges cross this beautiful river. The oldest and perhaps most well-known is the Point Neuf, which was built in the sixteenth century. The Sorbonne, a famous university, stands on the left bank of the river. There are many other famous places in Paris, such as the famous museum, the Louvre, as well as the Notre Dame. However, the most famous building in this city is Eiffel Tower.

Paris is named after a group of people called the Parisii. They built a small village on an island in the middle of the Seine River about two thousand years ago. This island, called the lle de la Cite, is where Notre Dame lies. Today around eight million people live in the Paris area.

3 . Two years ago, enormous fires swept through some 46 million acres of forest in Russia, the country’s worst fire season on record. Now, researchers have a clearer sense of just how significant the 2021 boreal (北方的) forest fires were in terms of emissions.

The study showed that for the past decade or so, boreal forests, especially forests in the uppermost reaches of Alaska, Canada, and Russia, have steadily become drier and hotter as heat waves and drought affected the environment. Fires in boreal forests are a normal part of the life cycle of trees that grow there. But climate change is throwing that cycle out of whack. Just in the past handful of years, forests in northern latitudes (纬度) reached a tipping point and started to produce far more emissions than usual.

The researchers obtained the data for their study by tracking concentrations of emissions in the atmosphere using satellites, and then they put that information into a computer model to determine where, geographically, those emissions came from. They found that boreal forests, which typically produce about 10 percent of the globe’s annual wildfire emissions, accounted for 23 percent of the world’s wildfire emissions in 2021—more than twice as much as normal. While previous analyses have regarded 2021 as a particularly destructive year for boreal forests, the study is a valuable contribution to the field because it “offers meaningful insights about where fire emissions increased the most within boreal regions and provides potential explanations for why those emissions are increasing,” said Canadell, one author of the study.

Canadell’s biggest worry is the study’s main conclusion: boreal forests have served an important and underappreciated role in reducing carbon emissions, but climate change threatens to release that stored carbon. “We need to be very careful with these systems in terms of their future evolution,” he said.

Each city has its own unique cultural symbol,    1    (break) the similarity of cities. The    2    (significance) cultural symbols such as Beijing’s Forbidden City, Hangzhou’s West Lake and suzhou’s gardens have helped form strong cultural confidence.

Qinhuangdao is focusing on fashion tourism. A first-class international tourist city needs wold tourist attractions, and Qinhuangdao seems    3     ( have ) some ,The Great Wall is world-class, and so    4     (be) the Beidaihe wetlands.

Qinhuangdao has successfully transferred the world’s unique cultural symbol，The Classic ofMountains and Seas，into the city’s cultural    5    ( develop). Qinhuangdao is the only city in China    6    (name) after an emperor’s imperial name.The West Port of Qinhuangdao is near the legendary place where Qin Shi Huang    7    ( seek ) immortality(永生) into the sea. At the West Port cruise terminal, the 350-meter-long giant murall The Illustrations of Mountains and Seas reaches far away by the waves of the Bohai Sea. It is presenting the ancient wonder of the book which is rich    8    myths and legends to foreign visitors and sending Eastern culture and philosophical thoughts to a wider stage.

A distinctive and unique city cultural symbol can improve recognition and identity,    9     will help to enhance the city’s attractiveness. With a cultural symbol, there is cultural confidence,and it is    10    deepest power a city has.

The World Health Organization (WHO) has announced a shocking finding about the air we breathe. It has found that almost everyone on Earth breathes unhealthy air. The WHO made     1    (it) air quality update ahead of World Health Day on April 7. The update reported that 99 per cent of the world’s population breathes air     2     goes beyond WHO air quality limits. It looked at data from over 6,000 cities in 117 countries. People     3    (live) in lower- and middle-income countries breathe the poorest-quality air. Millions of people die in these countries because of pollution-related diseases. The WHO said: “After surviving a pandemic, it is unacceptable to still have 7 million preventable deaths due     4     air pollution.”

The WHO said its report highlighted the need to move away from fossil fuels. It asked governments to do more     5     (reduce) levels of air pollution. It said: “Current energy concerns highlight the importance of speeding up the transition to cleaner and     6    (healthy) energy systems.” It added that high gas prices, energy     7    (secure), the dangers of air pollution, and climate change mean the world must be less dependent on fossil fuels. The WHO report     8    (include) many recommendations for change. One of these is     9     use of clean energy for cooking, heating and lighting. Another is to “build safe and affordable public transport systems and pedestrian- and cycle-friendly     10    (network)”.

9 . After a tiring day at the office, you find it hard not to smile when you’re greeted by an exciting and joyful dog. But it’s not just the happy shouting and wriggling (扭动) tail that strike our heartstrings. A new study shows that dogs’eyes filled with tears when reunited with their owners cause effect that brings out our love. The findings appear in Current Biology.

Takefumi Kikusui watched with interest when his dog was feeding her puppies, her face became so cute. Kikusui, a professor of veterinary(兽医) medicine at Azabu University in Japan, realized that his lovely mama dog had tears in her eyes. That possible connection between unbearable cuteness and tears sent him to the lab.

In the test, he and his team first measured the baseline tear volumes when dogs were together with the owner in their house. Then quickly, the owner would leave and stay hidden away from it for five or six hours. When the owner came back, they measured tear volume again. And found that the reunion with the owner raised tear volume. But it only worked with the dog’s owner. If reunited with the familiar caretaker in the dog care center, there was no increase in tears.

The researchers doubted that the tearful reaction was caused by oxytocin, a hormone(荷尔蒙) linked with social bonding. So they applied oxytocin to the dogs’ eyes. And, the dogs grew weepy. But why? To find out the reason for this easy-crying behavior, they showed volunteers a couple of dog head pictures. One was a normal dog face. And the other was a teary dog face in which they added man-made tears. The volunteers were more likely to want to hug and care for the one with big, wet puppy-dog eyes.

Dogs turn on the waterworks and their owners roll over. Now, that’s quite a clever trick!