More than 500 pieces of relics     1     (discover) at the Sanxingdui Ruins site last year. The relics include golden masks, jade and ivory artifacts and bronze wares     2     were exquisitely (精美地) built and     3     (unique) shaped, said the Sichuan Provincial Cultural Heritage Administration on Sept. 9, 2021. The new discoveries bring the total number of items unearthed at Sanxingdui     4     nearly 2,000 after the excavation of No. 3 to No. 8 sacrificial pits began in October of 2020.

Tang Fei, chief of the Sichuan Provincial Cultural Relics and Archaeology Research Institute, said, “The new discoveries demonstrate once again that the     5     (imagine) and creation of the ancient Chinese far surpassed what people today had expected”. Tang added that the excavation of the new pits has entered a critical stage, with more     6     (item) yet to be unearthed. He also anticipated that the items found will challenge the     7     (convention) wisdom of archaeologists.

Originally discovered in     8     late 1920s, the Sanxingdui Ruins have been considered as one of the world’s greatest archaeological finds of the 20th century.     9     (locate) in the city of Guanghan, around 60 km from Chengdu, the ruins covering an area of 12 square km are believed     10     (be) the remnants (遗迹) of the Shu Kingdom, dating back some 4,500 to 3,000 years.

2 . Climate change has been a long-standing issue that continuously drives scientists to find green, sustainable fuels. The universe’s most abundant element, hydrogen (氢), has drawn their attention and is now on its way to becoming the future of green fuel.

More than $150 billion worth of green hydrogen projects were announced globally in 2020, according to Reuters. Airbus, a European multinational aerospace corporation, has taken the lead in the new sustainable fuel industry. It has designed self-contained hydrogen fuel cell pods that can be attached to the underside of airplane wings, promoting the use of hydrogen fuel for long-distance flights, which aim to achieve zero emissions. The company plans to launch hydrogen-powered aircraft in 2035, according to Daily Mail.

Compared to fossil fuels, hydrogen is a much more eco-friendly fuel. When hydrogen burns, the only by-product is water. However, the traditional way to get hydrogen from natural gas or coal generates considerable carbon emissions. The greenest way is to obtain hydrogen from water using electrolysis (电解) powered by renewable energy, although this process requires so much electricity that it is quite expensive. The key to making hydrogen competitive with fossil fuels is to lower the production cost to under $1.50. This would require lowering around 50 percent of renewable power costs and 75 percent of electrolyzer costs, according to Australia’s renewable energy agency.

Also, shipping liquid hydrogen is challenging, given that needs to be chilled to -253℃ to do so. Japan’s Kawasaki Heavy Industries is set to complete the construction of the world’s first liquefied hydrogen carrier by early 2021. According to Reuters, most of the world’s big hydrogen export projects are looking to ship hydrogen in the form of liquid ammonia (氨), which can be changed to hydrogen and needs to be chilled to only -33 C.

With more and more countries aiming to cut down carbon emissions to solve the issue of global warming, green hydrogen will help decarbonizing industries that can’t be electrified hit the targets.

“We could use these circumstances, where loads of public money are going to be needed into the energy system, to jump forward towards a hydrogen economy,” said Diederik Samsom, who heads the European Commission’s climate cabinet.

3 . Nearly two years after the COVID-19 outbreak, China has granted approval to its first antibody combination treatment for COVID-19.

A team from Brii Biosciences, Tsinghua University, and the People’s Hospital of Shenzhen has accomplished the task in 20 months. It would usually takes 10 years. “It can reduce the rate of hospitalization and death by 80 percent,” said Zhang Linqi, leader of the research team.

The new antibody drug is immediately effective when conducted intravenously (静脉注射). Moreover, the treatment can protect people, especially those whose physical condition doesn’t allow vaccination, from becoming infected by COVID-19 for around nine to 12 months, said Zhang. How does it work? When a virus infects a cell, it relies on an important type of protein: the spike proteins on its surface. The spike proteins serve as a key to unlocking a cell. If a virus cannot enter a cell, it will be destroyed immediately. The job of our antibodies is to block the virus from entering cells. So its target is very precise. In addition, thanks to the coordination between the two antibodies, it is highly efficient and durable in controlling the virus, according to Zhang.

Lab tests suggest that the antibody combination can be effective against common COVID-19 variants, including the Alpha, Beta, Delta, Lambda and Mu. Testing with the newer Omicron strain is ongoing. The qualities of the new drug make it especially useful for high-risk groups, such as frontline medical workers and people who are not suitable for vaccination due to various possible health problems.

The new drug is expected to come to the market soon, but it’s not cheap. That’s because of limited production. Also, it typically must be administered intravenously in a hospital setting.

Noting that China has used science and technology to fight COVID-19 since the beginning of the outbreak, Zhang said: “Science is the core to solving the issue. Science has shown its power in all sectors, from medical treatment, medicine and vaccine development to prevention and control measures.”

9 . As an athlete, I’ve always worked hard to push m myself to my limits. And with that usually come some ________ and pains. So last year when I started to feel some muscle soreness (酸痛) after a________ physical exercise, at first I didn’t think it was a big deal. I was ________ for a marathon at the time, so over the weekend I’d done a 20-kilormete ________. The following Tuesday I hit my favourite gym to do a workout that ________ a lot of upper body weight lifting.My ________ told me to take it easy on my body, but I ________I’d be fine and powered through it. Afterward, my coach noticed a ________ swelling in my arm and said he was worried. I tried to brush him off but he ________ I drink a lot of water and check in with him in a few hours. Sure enough, by that afternoon the swelling had ________ and I headed to the doctor. I still thought he was making a mountain out of a molehill, but I ________ my coach so I did it.

The doctor took a close look at the swelling and diagnosed me with rhabdomyolysis (横纹肌溶解症), a ________ condition where muscle overuse causes kidney failure. As they gave me some medicine to help ________ the toxins (毒素), my doctor told me that we would have been having this discussion in the emergency room if I’d ________ even another 30 minutes. Things were touch-and-go over the weekend but I made a full ________. Thankfully I had a great coach I could trust-he saved my life!