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Many Chinese students think American students enjoy more freedom than them at school. But American schools also have their rules. If the students break the rules, they willget punishment, too. On the first day of a new term, 128 students of Morton High School were sent home for wearing the wrong clothes. There are altogether 1200 students in the school. Usually only 20 students break the school dress rule every day. So the headmaster Theresa Mayerik said it was the worst new term she had ever seen. 

At Morton High School, students' favorite clothing such as baggy (宽大的) trousers, low-necked shirts and tanktops (紧身短背心) are not allowed in classrooms. Some students think they have the right to choose what to wear. But the headmaster doesn't think so. "I'd be supportive if half the school was sent home, because 99% will get the message that our school are for education. " "Freedom" does not mean "free of restrictions (约束)". That is to say there is no total freedom in the world, no matter in the US or in China.

请以"童年的回忆"为主题，叙述发生在你的童年的一件事，谈谈这件事情

对你的影响或启示。

(prevent)

Whether you're on social media or sending a text message, you encounter emoji ( 表情符号) regularly.While most people's enthusiasm for emoji increased in the smart-phone era, Japan has been crazy for emoji since

1999. Designer Shigetaka Kurita invented emoji for a Japanese phone company 20 years ago as a way to make it easier to express ideas in a short message. The word emoji can be translated as "picture character" from Japanese. After the release of Kurita's emoji, rival phone companies in Japan began creating their own emoji. Many emoji on our digital devices today are imported from Kurita's original set of emoji.

Japan's love for emoji continued well into the 2000s before the rest of the world discovered them. Apple Inc. officially introduced an emoji function in their software in 2011. Soon, other phone companies from around the world made it easier for their customers to use emoji.

As you scroll (滑动) through your phone, you can see the wide selection of available emoji. More than 2,000 emoji are in existence now, with more being released each year. These numbers show the popularity and demand for emoji.

Why? Because words alone can't convey the complete meaning of a digital message. In digital communication, emoji express a tone or mood. More than 90 percent of people online use emoji especially ones that show emotion like hearts and smileys.For example, they might send a red heart emoji as a response that they really like something instead of writing, "I love that."

Some emoji are also abstract enough for people to use in any way they like. You can send an emoji as an inside joke, which is only understood between you and your friend.

Nor do they belong to a specific culture. You and I give emoji meaning, because emoji is a language that belongs to all of us.

For those who can stomach it, working out before breakfast may be more beneficial for health than eating first, according to a study of meal timing and physical activity.

Athletes and scientists have long known that meal timing affects performance. However, far less has been known about how meal timing and exercise might affect general health.

To find out, British scientists conducted a study. They first found 10 overweight and inactive but otherwise healthy young men, whose lifestyles are, for better and worse, representative of those of most of us. They tested the men's fitness and resting metabolic (新陈代谢的) rates and took samples (样品) of their blood and fat tissue.

Then, on two separate morning visits to the scientists' lab, each man walked for an hour at an average speed that, in theory should allow his body to rely mainly on fat for fuel. Before one of these workouts, the men skipped breakfast, meaning that they exercised on a completely empty stomach after a long overnight fast (禁食). On the other occasion, they ate a rich morning meal about two hours before they started walking.

Just before and an hour after each workout, the scientists took additional samples of the men's blood and fat tissue.

Then they compared the samples. There were considerable differences. Most obviously, the men displayed lower blood sugar levels at the start of their workouts when they had skipped breakfast than when they had eaten. As a result, they burned more fat during walks on an empty stomach than when they had eaten first. On the other hand, they burned slightly more calories (卡路里), on average, during the workout after breakfast than after fasting.

But it was the effects deep within the fat cells that may have been the most significant, the researchers found. Multiple genes behaved differently, depending on whether someone had eaten or not before walking. Many of these genes produce proteins ( 蛋 白 质 ) that can improve blood sugar regulation and insulin ( 胰 岛 素 ) levels throughout the body and so are associated with improved metabolic health. These genes were much more

active when the men had fasted before exercise than when they had breakfasted.

The implication of these results is that to gain the greatest health benefits from exercise, it may be wise to skip eating first.

Planning a visit to the UK? Here we help with ways to cut your costs.

AVOID BIG EVENTS Big sporting events, concerts and exhibitions can increase the cost of accommodation and make it harder to find a room. A standard double room at the Thistle Brighton on the final Friday of the Brighton Comedy Festival (19 Oct.) cost £169.15 at Booking.com. A week later, the same room cost £118.15.

If you can be flexible and want to know dates to avoid—or you're looking for a big event to pass your time—check out sites such as Whatsonwhen.com, which allow you to search for events in the UK by city, date and category.

STAY AWAY FROM THE STATION If traveling to your destination by train, you may want to find a good base close to the station, but you could end up paying more for the sake of convenience at the start of your holiday.

Don't be too choosy about the part of town you stay in. Booking two months in advance, the cheapest room at Travelodge's Central Euston hotel in London for Saturday 22 September was £95.95. A room just a tube journey away at its Covent Garden hotel was £75.75. And at Farringdon, a double room cost just £62.95.

LOOK AFTER YOURSELF Really central hotels in cities such as London, Edinburgh and Cardiff can cost a fortune, especially at weekends and during big events. As an alternative consider checking into a self-catering flat with its own kitchen. Often these flats are hidden away on the top floors of city central buildings. A great example is the historic O'Neill Flat on Edinburgh's Royal Mile, available for £420 for five days in late September, with room for four adults.

GET ON A BIKE London's 'Boris bikes' have attracted the most attention, but other cities also have similar programs that let you rent a bicycle and explore at your own pace, saving you on public transport or car parking costs.

Among the smaller cities with their own programs are Newcastle (casual members pay around £1.50 for two hours) and Cardiff (free for up to 30 minutes, or £5 per day).