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Online exercise classes are changing the way we think about fitness, and here are some of the best apps for online exercise classes for you to select.

Daily Burn

Daily Burn offers a 30-day free trial, so you can get a feel for the classes and instructors before you make the decision. It provides over 1,000 classes ranging from choices for beginners to advanced athletes, all taught by expert trainers. There are classes that are 10 minutes and ones that are an hour, so you can do a workout that's perfect for your schedule.

Alo Moves

Through this app, you're given the chance to connect with encouraging coaches and other hard-working members, and take more than 2,500 different yoga classes of all styles and all difficulties. You can even take classes or practice yoga with any of your friends online. At a price point of $20 per month, it's surely one of the reasonable at-home choices.

Booya Fitness

Classes offered include cardio (有氧运动) kickboxing, sports conditioning, dancing, and even more. Even if that sounds like you'll need much expensive equipment, Booya Fitness promises that 75% of their workouts can be completed with just an exercise mat (垫子). Booya Fitness is also very selective (严格挑选的) in the music they play because they know a good song can make your cardio workout motivating. It's a best choice for the middle and upper class.

Peloton

Peloton's service is based on live classes intended for anyone who has a bike, and they require the Peloton branded equipment to join in. There are new classes every day, and thousands of classes to choose from. What's more, there is also a treadmill users can purchase for running- and walking-based classes, and a TV app for strength classes. However, it will charge you more for the convenient service.

1. 高中生在写作业的时候使用 AI工具的优缺点；

2. 你的观点和建议。

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Perhaps no other scientist has had on China's aerospace science than Qian Xuesen. Described by the authors of the Story of Qian Xuesen as a man with "great scientific thought and scientific spirit" who and with effort, achievement, and devotion, Qian was an extremely well-respected man.

So, what made Stephen Hawking a great genius? , he was brave, though sometimes careless in what he said or did. ... Above all, Hawking was willing to. This odd combination of characteristics had made him one of the greatest thinkers of the 20th and 21st centuries.

Now half way through her exchange year, Xie Lei feels much more in the UK. What seemed strange before now appears quite normal to her. "Engaging in British culture has helped," she said. "As well as studying hard, I've in social activities... While I'm learning about business, I'm also acting as building a bridge between us."

Newspaper reporters were given nothing but the bare facts by the department the investigation.

My main reason for New Scientist is to keep pace with advances in science.

There were cheers for each of the candidates as they spoke .

Nowadays more and more customers to purchase organic food for sake of health.

Chinese restaurants began to open in America in the mid-19th century, clustering (集中) on the west coast where the first immigrants landed.

They mostly served unique version of Cantonese cuisine — chop suey, egg fu yung and the like. In that century and much of the 20th century, the immigrants largely (flow) from China's south-east regions, mainly Guangdong province.

Restaurants began calling their food "Hunan" and "Sichuan", and though it (true) bore much resemblance to was eaten in those regions, it was more diverse and boldly spiced the sweet, fried stuff that defined the earliest Chinese menus.

By the 1990s, adventurous diners in cities with sizeable Chinese populations could choose many regional cuisines. A particular (favor) — Sichuan food, made its diners addictive with its extremely chilly dishes.

Virtually every small town had one Chinese restaurant and, generally, the menus were the same: (steam) pork dumplings; sour soup; stir-fries listed by main ingredients, a pepper star suggesting the amount of pepper.

But there were slight changes in some cities. For instance, in Boston, takeaways often come with bread feature a dark molasses-sweetened sauce, a special cuisine developed in upper Manhattan (meet) diners' novel taste.

The barrier was all too4. Born with muscular dystrophy (营养障碍), Thorleifsson has been using a5 since age 25. As he waited outside the shop, he6,"I thought about how strange it is that we7 families in this way."

Living all over the world as a creative director and digital designer, Thorleifsson had8 how different cities consider and plan for accessibility, from ramps (斜坡) and sidewalks to public9. Having sold his digital creative agency to Twitter, Thorleifsson had the means to make a difference in his home city. He10 a project to make Iceland wheelchair accessible, one ram p at a time.

Ramp Up Reykjavik started as a non- profit with a11 to build 100 ramps within a year. Unlike portable and12 solutions in other cities, these ramps are permanent structures that13 the style of the buildings, making them appear as if they' ve always been there.

It's a design detail that helps provide a sense of inclusivity: These ramps, and those who need to use them,14. "Equal access is not a reality yet," says Thorleifsson. But as he's learnt,15 starts with just one person.

Through caring for farm animals, kids learn that in life others often come before self. It doesn't matter if we don't feel like it or if we are sick and tired. What matters is that we take care of the animals that take care of us and do so in a timely manner.

If the work on a farm does not get done, the operation fails. It takes discipline and commitment to get down to business every day, and seeing this in action will give kids a good work attitude. They will know and understand that nothing good comes easy and that they have to work to survive. Functioning as part of a productive team will surely be playing a crucial role sooner or later in all walks of life.

Additionally, farming teaches patience. It's especially true for the animals. Cattle will be difficult to control. Horses will run away when you try to catch them. Goats will kick over that bucket of hard-earned milk. A rooster will decide you got too close to his hens and give you a run for your money. In spite of all that, kids will learn to be patient and take things easy.

There may not be any instant reward, but in the long-term kids will see the benefit of all their efforts during those hard days.

A. Fairly often, things do not go your way.

B. Kids also learn to be grateful to animals.

C. In the meantime, they learn to work with others.

D. Teamwork is no longer a significant skill to develop and use.

E. Animals need to be fed and cared for before we get to sit down and relax.

F. Kids are also able to comprehend the value of hard work through farm life.

G. What they learn on a farm, however, can be instrumental in their future lives.

Welcome to the world of drip pricing — the practice of promoting something at an attractive headline price and then, once you've committed to the purchase process, hitting you with unavoidable add-ons that are "dripped".

In most cases, you see through all additionally added mandatory fees, and even though you could relinquish the deal, you choose to bite the bullet and complete the deal. Resistance to the idea of starting the search all over again is not simply a matter of laziness or indecision. There's a profound psychological mechanism at play here, called the present bias.

In the paper, Doing It Now or Later, economist Matthew Rabin defines people's present-biased preference via an example of choosing between doing seven hours of unpleasant activity on April 1 or eight hours two weeks later: If asked on February 1, most people will choose the earlier option. But come April 1, given the same choice, most of us tend to put off work till April 15. In simple terms, the inconvenience of doing something "right now" often feels disproportionately large. Beyond the challenge of starting over, there's another psychological phenomenon that drip pricing uses - loss aversion. Imagine you're booking tickets for a show. Initially attracted by the headline price, you're now presented with different seating categories. Seeing a VIP ticket is within your budget, you decide to fork out. But then, during the checkout process, the drip begins. You realize you could have chosen lower-category seats, but by this stage, you've already imagined yourself enjoying the show from those nice seats. Going back to a cheaper seat will feel like a loss.

Buyers would benefit from a ban on drip pricing. Many countries are taking steps to protect consumers from drip pricing. The effectiveness of such measures, however, is uncertain. Nonetheless, you can hopefully make a more informed decision by understanding why the strategy works.

Indeed, listening to music is a deeply private and personal experience nowadays and even more so with the introduction of the iPod and smartphones. When teenagers listen to music via streaming, artificial intelligence and social media platforms team up to suggest personalized playlists for them.

Some young people feel that AI generated playlists make them exposed to something dull. Their playlists are populated with songs and artists they've never heard of before, yet they all sound similar. In the past, they might not have noticed such a situation. Their musical consumption was narrowly dominated by the"Top-40" artists. However, AI generated playlists have changed this, since a wider range of music is available. If they think their AI influenced playlists are unappealing, they still have the ability to search for new music. Just because AI can suggest songs, it doesn't prevent them researching and discovering music on their own, or sharing playlists. Anything that exists, they can find. The store is always open.

Music listening and preferences play an important role in young people's transition (过渡) from childhood to adulthood, two seemingly opposing but vital processes: forming a unique identity, while at the same time becoming part of a community. However, AI generated playlists have the potential to challenge this transition. So does AI make it easier to differentiate the self, but harder to bond with others?

Fears of new technologies are commonplace. For example, the decline of scheduled network TV erased lots of common ground for discussion, so will 50 million Americans ever again tune in to watch the series ending ofa TV show, as they did for Friends in 2004?

If AI is, indeed, contributing to the transformation of teenagers' shared listening experiences, then AI playlists are more than a convenient way to discover their next favorites. They are a revolution worth paying attention to.