2 . As one of the greatest threats to our existence and to the future of our planet, climate change doesn’t just affect one place, but the whole world.

Thus, at the Beijing 2022 Winter Olympics, which just ended, China has again demonstrated its capability and determination to tackle the global challenge of climate change through putting in place innovative and green technologies to protect the environment.

To achieve this great milestone, China engaged about 300 million Chinese in the planning process, activating the spirit of the Olympic motto of “Faster, Higher, Stronger—Together”. Knowing that preparations for the event, such as the construction of venues, roads and other facilities, could lead to an increase in energy use and carbon emissions, the Beijing 2022 organizing committee was determined to carry out carbon reduction measures such as low-carbon venues, energy use and transportation.

First, regarding low-carbon venues (比赛场馆) and infrastructure (基础设施), a total of 550 kilometers of streets along Beijing’s rivers and lakes were rearranged for use by cyclists and pedestrians. Also, a waterfront pathway running 28. 5 kilometers from the capital’s downtown to its Tongzhou district was opened to the public in 2021.

Second, regarding low-carbon energy use, for the first time in Olympics history, 100 percent of the conventional electricity demand of all venues was supplied by renewable energy. The venues relied on the newly built Zhangbei renewable energy flexible direct current power grid in Zhangjiakou and the cross-regional green power trading mechanism.

Third, a low-carbon transportation system was used. The transportation system within the overall Beijing Games zone mainly relied on electric and natural-gas-powered vehicles. In the Yanqing district zone and the Zhangjiakou zone, hydrogen (氢)-fueled vehicles were used. According to the organizers, a total of about 1, 807 hybrid vehicles, over 800 hydrogen-fueled vehicles, nearly 500 natural gas-fueled vehicles and 370 pure electric vehicles were used.

China has showed the world its commitment to giving top priority to ecological conservation. Indeed, the 2022 Beijing Winter Olympics provided sustainable initiatives to ensure ecological protection and carbon-neutral Games.

The Sydney Opera House     1     (believe) to be a symbol of Australia and one of the     2    (famous) buildings in the world although the building has been open for about half a century. Seen from a ship or a plane, the sky of the Sydney Opera House, the blue water of the harbor and the Sydney Harbor Bridge are     3     beautiful that they attract 200,000tourists from all over the world every year.

Who do you know designed the Opera House? It was a famous Danish designer     4     name was John Utzon that designed it. In the 1950s, the Australian government            5    (apply) for the Sydney Opera House Fund(资金) and held a designing     6     (compete) for the Opera House. Utzon spent a few years working on his design and in 1961, he     7     (final) solved the problem of how     8     (build) the roof like the sails, which immediately got a lot of attention.

It's top with     9     (thousand) of tiles(瓷砖) weighs about 15 tons.     10     is amazing is that the Opera House is built with 6.625 square meters of glass and 645 kilometers of cable. It is 185 meters long and 120 meters wide with l, 000 rooms.

7 . Cameron was a DJ at a radio station in Texas. One night, one of his friends invited him to meet some ________, He didn't have any ________ for autographs (签名), so he took out a dollar bill. Before the night ended, he almost had every star's autograph. He ________ that dollar bill and always carried it with him.

Later, the radio station was closed, and Cameron ________ a part-time job at another station in Fort Worth. One morning, as Cameron ________ the radio station, he saw a man sitting in an old car in the parking lot. When he went   ________ to work that night, he noticed the car parking in the ________ place. The fellow in it always ________ to him. As Cameron walked near the car the next morning, the man rolled his window down. He said he had been here for days with no ________. He drove to Fort Worth to take a job, but he arrived three days early and ________ go to work right away. Then he asked if he might ________ a little money fora snack. Cameron had no money to lend him, and ________ had gas to get home. Then he remembered that dollar bill. He ________ for a while, pulled his wallet out and studied the bill. Then he gave it to him. “Somebody has ________ all over this,” said the man, who didn't ________ that the writing was dozens of autographs.

That morning Cameron returned home trying not to ________ it. Just then the phone rang. A company wanted him to do a commercial (商业广告) that paid him $ 500. In the next few days more ________ came to him out of nowhere. Things improved greatly for Cameron, which all ________ that morning in the parking lot, when he ________ with that dollar bill.

Cameron never saw the man again. ________ the guy was a beggar or an angel doesn't matter. Cameron was tested that cold morning and he passed.

8 . When everything seems very hard and there's nobody to talk to, our mood is getting worse and worse. There are some things that may help you improve your mood.

The first thing you should try is thinking positively. It's very hard to do so because when we feel unhappy we usually lock ourselves at home and think about all the bad things.     1     Don't forget that we are what we think we are.

    2     This could be something you wanted for a long time, a short trip, a coat, a ring or anything that could lift up your mood. This doesn't have to be expensive. What's important is being good to yourself.     3     Choose one person and give him/her a gift. It may be just a little toy to your poor neighbor's child. Making another person feel happy will make you feel good in your mind.

Don't forget to be creative. Creating things can change our mood.     4     It also includes cooking, sewing, writing and many other activities. While focusing on creating, you will forget how you have been feeling.

Actually, when something goes wrong, what you have to do is to take control of your emotions and make them positive instead of letting them control you.     5     What's hard is starting doing something that will lift up your mood.

9 . On Wednesday a powerful earthquake hit Amatrice that was at the epicenter, which is the point in the earth's surface directly above where the earthquake happens. The town's clock tower was the only building still standing. Italy's prime minister said the earthquake had killed at least 120 people, and warned that the number might increase. There were several villages that were affected in farther mountainous areas. The earthquake was also felt as far away as Rome, 100 miles from the epicenter.

Earthquakes can't be predicted. There are warning systems that can save some lives, but only under certain conditions. Unlike a tornado warning where radar can see it and issue a warning before it, an earthquake warning happens when the earth is already shaking. We don't have a system that can predict when the earth is going to shake. Our warning system is based on the fact that the earth is already shaking. The warning depends on how far you are from the earthquake epicenter. If you're at an earthquake epicenter, you're going to get no warning. If you're far away from the epicenter, we can give you some time to prepare.

Another condition is how close the sensor is to the epicenter. If the sensor is 10 miles away from the epicenter, it takes five seconds to get to that sensor. So, the more sensors we get, the more time we'll get as well. If you get 10 seconds notice of an earthquake that's happening, especially a big one, you can open up the lifts on the nearest floor. You can also stop all the things that are moving before the shaking gets there. If you're 30 miles away, your warning could be 15 seconds. It is 15 seconds that can save your life.

10 . May Day holiday is coming. Are you ready to travel abroad? Here are a few country can think about.

Bhutan

The Kingdom of Bhutan, lying on the Silk Road in South Asia, is believed to be the spot for its impressive beauty. The kingdom has great grasslands in the south, north, the most famous Himalayan Mountain which is believed to be the highest most the world.

England

While tourists may all want to go to the Big Ben and the Buckingham Palace, we suggest visitors should travel to England's coastal towns. The English seaside gives visitors a chance to search for sea life in rock pools and of course, eat fish and chips. In the future, new parts of the England Coast Path will continue to open, making it easier to explore the country's coastline.

North Macedonia

If you don't want to go to Europe's popular travel spots, North Macedonia could be a good choice for you. Its mountain paths are very quiet, and the local people are helpful and friendly. Among its destinations is Ohrid, an old town filled with medieval ruins and churches and lined with stone streets.

Costa Rica

Costa Rica in Central America is popular for many reasons, from its coffee to its wonderful surfing. It's also well-known for its green energy, and 90% of its energy is created by green sources, such as wind and water energy. It is also one of the most biodiverse countries in the world with half a million species.