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

The plant is estimated to generate 62.44 billion kilowatt-hours annually,  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  (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  (it) associated facilities as one of the country's biggest and  (challenging) engineering projects. 

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

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

I was cooking dinner when my cell phone rang. My friend Anna called because her car 1  and her two kids were hungry and tired. She asked if I could go and 2  the kids while she was waiting for the car service. 

I asked my husband to 3  cooking dinner and then started my car. As I was driving to my 4 , fog formed and thickened. After picking up the kids, I had to 5  in thick fog. 

The children were my responsibility and I couldn't help but be 6 . I tried to put on a brave front as I drove in almost zero 7 . Soon the fog thickened to the point where I could hardly see and my anxiety began to 8 . I knew I had to pull over, but I couldn't even see the lines on the road. I drove as 9  as possible, going to the right where I thought the 10  might be. I stopped and reached for my phone, only to realize I had left it at home. While I was 11 what to do, flashing lights in my rearview mirror (后视镜) caught my attention. It was a huge relief to see a police car getting 12 . The police officer asked for my address, 13  me to follow him and guided us home. Before I found time to 14  him, he had disappeared into the darkness. 

All I could do was be 15  in my heart. 

If making changes to your weekend routine could improve your productivity and mood through the coming week, would you do it？Research says that it can.  Try a few of these additions to your routine and see how they work for you.

●Get plenty of sleep. The importance of sleep to your brain's health just can't be overstated. Ideally，you shouldn't ever be short of sleep, which can affect everything from your mood to your cognitive（认知的）function.  You can do this by sleeping late, but you don't have to. Naps(午睡）create big brain benefits, and the weekend can be a perfect time for napping.

●Get outside. Spending time in nature benefits your brain and your general health. So unless the weather is really bad, plan for some time outdoors.  A park where you're surrounded by trees and other plants works too.

● When you're working during the week, it may be hard to spend as much time socializing with friends and family as you might like. So spend some time during the weekend with people you care about most.

●Do something fun that's outside your normal routine. This change requires creativity, but it may be the most enjoyable small change you can make.  That's because, when you break out of normal routine, your brain is awake and active.You'll remember that part of your weekend better, and you'll face the week with greater energy and creativity.

A. The key is to plan ahead. 

A. Spend time with people you like.

C. Think back to the last time you had a small outing. 

D. You don't have to travel to forests to experience the benefits. 

E. It will make your weekends more memorable and enjoyable. 

F. The good news is that you don't have to make huge changes.

G. But if you' ve fallen behind on sleep during the week, use the weekend to catch up.

"Who's a good reader? It's you, isn't it?" This is a typical example of "parentese (父母语)." Recent research suggests that parents speaking parentese to their babies can give their language development a serious boost. In the study, researchers found that teaching parents how to speak proper parentese enhanced their ability to communicate with their babies — and even improved the children's long-term language skills.

Parentese is distinct from conventional baby talk, which mostly relies on silly sounds and made-up words. In the 1960s, scientists studying speech patterns across different languages noticed a unique style that adults used addressing young children. This language was characterized by simple words and grammar, high pitch (音调) and a much slower speed. The baby-directed speech was first named "motherese" before it was called "parentese."

Later research showed parentese is grammatically correct, with real words and phrases, which helped babies differentiate between words and process what was being said. "We've known for some time that use of parentese is associated with improved language outcomes, but we didn't know why," says Patricia K. Kuhl, the study's senior author. But Kuhl thinks the new research suggests why parentese helps babies learn language skills.

"We now think parentese works because it's a social attraction for the baby brain," she says. "Its high pitch and slower speed are socially engaging and invite the baby to respond."

All 71 families in the new study had their children equipped with a special coat with an audio recorder built in. During four separate weekends when the babies were 6, 10, 14 and 18 months old, the researchers recorded all of the interactions between family members and the babies. The 48 families who were randomly selected for a course in parentese learned about ways to include more parentese in conversation. 

And even though all of the participating families used some form of parentese at the start of the study, the babies of parents who received coaching showed the most improvements in their conversation skills. Beyond that, those babies had a 100-word vocabulary compared with the control group, who only knew 60 words at 18 months

This will be an important year for pioneers developing electric vertical take-off and landing (eVTOL) aircraft (垂直起降飞机), popularly known as flying taxis. Several firms are hoping their craft can obtain the necessary certification in 2023 to start commercial production, getting ready for the first passenger services. 

Air taxis generally carry fewer than half a dozen passengers. They land and take off vertically using multiple small rotors (旋翼). With clever software controlling the rotors, they are easier to fly and readily capable of autonomous flight. The plentiful number of rotors also helps with safety, as the aircraft can continue to fly if one or more fail. 

Some designs use an extra rotor or two at the back to push the aircraft along during flight. Others, like that produced by Joby Aviation, have rotors like a set of small wings providing lift, making more efficient use of the aircraft's battery and increasing range. 

After thinking hard about how to certify(授予专业合格证) these flying machines, regulators(监管者) have been working with developers on safety standards. This is a multi-stage process. Besides obtaining "type" approval, which shows the airworthiness of a new type of aircraft, factories must be certified before production can begin in volume. And an airline-style licence is required if paying passengers are to be carried. Companies are working hard to get these approvals. Piloted operations are expected to be approved before autonomous flights.

In Germany, Volocopter will be flight-testing a family of eVTOLs. The firm is hoping its smallest, the two-seater VoloCity, can be certified in time for the 2024 Olympics in Paris, where the plan is to operate trips between airports and the athletes' village. Other air-taxi firms also hope to provide services in Paris, or at the World Expo, which takes place in Japan in 2025. 

As far as I could tell, there was only one problem with this year's Super Bowl. The Green Bay Packers weren't green. They were blue. And even though I had never before seen a professional football game live and in living color, I had read enough from my subscription to Sports Illustrated to know that the dark jerseys (运动衫) worn by the Green Bay Packers were green, not blue.

"Maybe it's something special they're doing for the Super Bowl,"my dad suggested.

"The colors aren't right, Dad," I said. "I'm sure of it."

Eventually Dad agreed. "I'll get a repairman tomorrow," he said. It was a minor annoyance, but it somehow cast a pall over our enjoyment of the pre-game festivities. This was highly anticipated Super Bowl, and we were watching it on our super new color TV. It was supposed to be super.

Just a few minutes before kickoff, my big brother Bud arrived with Craig, a college friend. Craig looked at the TV for a moment. "I think your tint (色调) is off a little," he said. He reached behind the set and began feeling around for buttons. Suddenly our color TV was black and white. He reached behind the TV again. He must have found the right button, because a moment later color was restored — and perfected. The Green Bay Packers were in their traditional green and gold uniforms. The field was green, the sky was blue and it was a Super Sunday, indeed.

It amazed me then — and often has since — what a major difference a minor adjustment can make. A well-placed nail or a tweak (拧) of a button from someone who knows what they're doing can change everything. The same principle holds true in interpersonal matters. While there are some hurts that cannot be easily repaired, it's amazing how often a simple smile, a kind word, or a gentle touch can change our way of thinking, improve our mood, and make everything seem, you know, super. 

Become a World Ride Ambassador

Are you interested in empowering women around the world through mountain biking? Interested in going on a World Ride mountain biking trip? Looking to make more connections within your local bike community? If so, World Ride is looking for YOU!

For its second year, World Ride is looking to have 20 ambassadors help us spread our mission around the world!

The duties of ambassadors are as follows:

●Each ambassador is asked to raise $600 for World Ride over the course of this year

●Active on social media and/ or in your bike community and willing to recommend us to your friends, family and followers

●Willing to volunteer at / organize World Ride events in your area 

●Be inclusive of all riders and working on creating an inclusive bike community

Ambassadors can be anyone! We are an organization whose mission is to empower women, but we encourage everyone to apply!

Benefits of being a World Ride ambassador:

●Discount codes（码）and prizes from our sponsors（赞助商）

●Discounts and possibly goodies（好东西）from World Ride 

●Discount on one World Ride trip per year

●A network of amazing ambassadors from around the world 

●Ability to meet and plan trips with other ambassadors

Additional notes are below:

We're looking for people who are experienced fundraisers; in your application please include examples of what you have done before for fundraisers. Don't have experience? Have no fear! World Ride provides training to ambassadors on how to fundraise!

For fundraising this year, we set up a fundraising rewards system——the more you help us, the more you receive!

Applications are now open. The deadline for applying is February 18. Get in touch if you have questions about our ambassador program！

注意：1、写作词数应为80左右；2、请按如下格式在答题卡的相应位置作答。

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