The Baihetan hydropower plant, China's second largest hydropower facility on the upstream branch of the Yangtze river, was     1     (formal) completed on Tuesday after the last generating unit was connected.

The plant is estimated to generate 62.44 billion kilowatt-hours annually,     2     could save about 90 million tons of coal a year and cut annual carbon dioxide emissions (排放) by about 248 million tons.

Baihetan is one of six huge hydropower     3     (station) along the Yangtze river, China's longest. The Three Gorges Corporation, the project's developer, has described the 289-meter dam (大坝) and     4     (it) associated facilities as one of the country's biggest and     5     (challenging) engineering projects.

Construction began in 2017, with a total investment     6     (estimate) at 170 billion yuan. As     7     major project in China's west-east power transmission (输送) program, it will deliver electricity across the country     8     cities in the east.

China goes on     9     (construct) hydropower plants in the southwest, despite a long and severe drought in the summer of 2022 that saw generation volumes drop, forcing regions     10     (limit) power consumption.

Six weeks before his 97^th birthday, Giuseppe Paternò fulfilled the dream of a lifetime: He     1     (get) a university degree.

Mr. Paternò’s     2     (graduate) has inspired news reports around the world, partly because     3     his age. But he has also drawn attention because his life story speaks of commitment, a theme that has resonated (产生共鸣) as millions of schoolchildren in Italy and elsewhere face extraordinary uncertainty during the coronavirus pandemic.

Born in Palermo in 1923, the first of seven children in a “ very poor family ” , Mr. Paternò began working soon after     4     (finish) elementary school. It was only after he retired, in the mid-1980s, that he returned to his books.

“ His story proves that dreams can come true and that you can remain young — if not in age at least in spirit — if you develop interests. ” said Rosella Cancila, his essay adviser and     5     professor of history at the University of Palermo.

Italy’s university system is based on a three-year degree,     6     (follow) by a two-year master’s course. University officials are hoping that Mr. Paternò     7     (continue) his studies.

He isn’t so sure. “ I have to admit that in this moment, I don’t know     8     I would handle it with the same spirit. ” he said, noting that all the attention had been a bit tiring. Still, Mr. Paternò said, he would     9     (probable) register anyway. “ I want to keep my     10     (choice) open. ”

At the 2020 Tokyo Olympic Games, China’s sprinter Su Bingtian made history by     1    (become) the first Chinese athlete to make it to the final of men’s 100m Olympic event.

“I’m very     2    (excite) to be in the 100m final. Stepping on the track has realized my dream.” Su said after the race. Su has set     3     Asian record of 9.83 seconds,     4     is also the best performance for the Chinese on the world stage.

“London 2012 was my first Olympics. I was just a young man eager to become one of the top athletes.     5    (lucky), perseverance(坚持) helps me prepare     6     the game and with my     7    (determine), I make my dream come true. I feel more confident than I used to be. It is a breakthrough for me     8    (complete) the semi-final at that time.” Because of his excellent performance, Su, titled the “Asian flying man”, was chosen as the flag-bearer for the Chinese delegation at the closing ceremony of the games on Aug 8.

Su’s great success     9    (inspire) more Chinese athletes and teenagers to improve     10    (they) since he lowered the Asian 100m record to 9.83 seconds.

It is reported that at present a city in Japan has a problem with graffiti(涂鸦). However, it is not the usual type of graffiti with paint from spray cans     1    (use) to write on walls. It is graffiti in sand.

Officials in the city of Tottori are asking tourists to give up     2     (write) messages and drawing pictures in the sand of its giant sand dunes (沙丘). The officials say the graffiti causes damage to the dunes,     3     destroys the pleasure others get in looking at the sand.

More than 3,300 cases of "sand graffiti"     4     (occur) at the tourist spot in the past decade. In January, two overseas tourists were ordered     5     (erase) a 25-meter-long message that read "Happy Birthday Natalie".

The Tottori Sand Dunes are famous throughout Japan     6     their natural beauty. They are the largest and longest sand dunes in the country and form part of     7     scenic coastal park on the sea of Japan coast. The biggest dune is 50 meters high.

The local government wants to improve tourists' understanding of the     8     (important) of the dunes. It will set up much     9     (many) signs in English, Chinese and Korean asking people to respect the dunes. A spokesman said, "We are concerned about whether the rules are     10     (complete) understood, and we want to continue to protect views of the beautiful sand dunes."

At a time when we are all experiencing an extraordinary level of stress, science offers a simple and effective way to improve our own emotional （情感的）health.

To help yourself,     1    （ start） by helping others.

As     2     matter of fact, our bodies and minds benefit in a variety of     3    （ way）when we help others. Some research has focused     4     the “ helper's high. " Studies show that volunteering, donating money, or even just thinking about donating money can release （释 放）feel-good brain chemicals.

    5     （feel） responsible for other people also can help us deal with whatever challenges life brings. Emily Greenfield, an associate     6    （ consult） of social work at Rutgers

University, studied a concept called “felt obligation （义务），”   which     7     （measure） by asking people questions such as how obligated they would feel to give money to a friend in need, even     8     it meant putting themselves in trouble.

As it turned out, the people who had higher levels of “felt obligation” - meaning they were the type of people to sacrifice for others - dealt     9    （ well） with their own life challenges than others.

She     10     （note） that caring for others helped us to regulate our own emotions and gain a sense of control.

Climbing Mount Everest was once a feat(壮举) reserved for only the bravest mountaineers.These days even inexperienced or elderly climbers try to get to the top of the world.

Twenty years ago, climbers in their 60s     1     (have) just a one-in-eight chance of getting to Everest's summit(峰顶), but now the odds are closer to one in three.

The fortunes of first-time Everest climbers have improved because     2    the rise of the commercial climbing business.In     3     1990s, experienced guides began leading groups of new climbers.Today more than 24 companies offer the service.Everest enthusiasts with little climbing experience can pay tens of thousands of dollars to have their hands     4     (hold) most of the way up.

Better weather forecasting has helped, too.Travelling from the base camp to the top of the mountain     5     (take) around four days, and success depends     6    (heavy) on weather conditions along the way.Spotting a suitable “window” of good climbing weather was difficult thirty years ago.With the     7     (develop) of technology, forecasting has vastly improved.

On May 23nd, 396 climbers attempted     8     (reach) the summit in one day.The result was a long queue along a ridge(山脊)in the “death zone” near the top,    9     might have contributed to the death of some of the eleven climbers.

It still pays to treat the     10     (world) highest peak with the most respect.