中华文明历来注重社会和谐，强调团结互助。中国人早就提出厂“和为贵”的思想，追求天人和谐、人际和谐

nearly nude images of someone they know, according to a survey released on Tuesday. Only four percent of mobile phone-owning teens in that age group have sent sexually suggestive pictures of themselves, a practice known as "sexting," according to the Pew Research Center's Internet American Life Project.

The Pew survey found that girls and boys were equally as likely to have sent a suggestive picture to another person and older teenagers were more likely to have engaged in "sexting." Eight percent of 17-year-olds with mobile phones have sent a sexually provocative image by text and 30 percent have received a nude or nearly nude image on their phone. Only four percent of 12-year-olds have sent suggestive images of themselves.

Amanda Lenhart, a senior research specialist at Pew and the author of the report, said sexually suggestive images have become a form. of "relationship currency" for teens. "These images are shared as a part of or instead of sexual activity, or as a way of starting or maintaining a relationship with a significant other," she said. "And they are also passed along to friends for their entertainment value, as a joke or for fun." "The desire for risk-taking and sexual exploration during the teenage years combined with a constant connection via mobile devices creates a 'perfect storm' for sexting," said Lenhart. "Teenagers have always grappled with issues around sex and relationships, but their coming-of-age mistakes and transgressions have never been so easily transmitted and archived for others to see," she added.

The survey found that teens with unlimited text messaging plans were more likely to receive "sexts" containing images of people they know. About 75 percent of mobile phone owning teens have unlimited plans. Among this group, Pew said 18 percent reporting receiving "sexts" compared with eight percent of teens on limited data plans and three percent of teens who pay per message. According to Pew, 58 percent of 12-year-olds own a mobile phone and 83 percent teens aged 17 do.

Pew noted that a number of US states are grappling with how to deal with "sexting" among minors and some legislatures have stepped in to consider laws that would downgrade charges from felonies to misdemeanors. Pew conducted telephone interviews with 800 teens aged 12 to 17 and their parents between June 26 and September 24.

What is the theme of the passage?

City.

样一番景象!

自信并非来自遗传，是需要后天学习的。这就意味着，你也可以充满自信。从现在、从这里开始。

自信首先从想法开始。你怎么样看待自己，很大程度影响了你觉得自己怎样。转而也影响了你说话、做事的方式。

没有你的同意，谁也无法将你看低一等。

充满自信的第一步是要开始自信地看待自己。注意自己的内心对话，注意你什么时候让消极和怀疑控制了自己的思想。

你周围的环境对你有着莫大的影响。你读的书，和你待在一起的人，你听的音乐都对你的思维方式、对自己的感觉以及对世界的看法产生影响。

ke-off and landing, few has given them a total ban, as many passengers want to work during flight.

______

n from it? Give some examples.

during last weekend's Super Bowl, an ad from FedEx was the one many Americans found the most entertaining. It showed a caveman trying to use a pterodactyl for an express delivery, only to watch it be gobbled up on take-off by a tyrannosaur. What did the world do before FedEx, the ad inquired? It might have asked what on earth FedEx did before the arrival of online retailers, which would themselves be sunk without today's fast and efficient delivery firms.

Consumers and companies continue to flock in droves to the internet to buy and sell things, FedEx reported its busiest period ever last December, when it handled almost 9m packages in a single day. Online retailers also set new records in America. Excluding travel, some $ 82 billion was spent last year buying things over the internet, 24% more than in 2004, according to comScore Networks, which tracks consumer behaviour. Online sales of clothing, computer software, toys, and home and garden products were all up by more than 30%. And most of this stuff was either posted or delivered by parcel companies.

The boom is global, especially now that more companies are outsourcing production. It is becoming increasingly common for products to be delivered direct from factory to consumer. In one evening just before Christmas, a record 225,000 international express packages were handled by UPS at a giant new air-cargo hub, opened by the American logistics firm at Cologne airport in Germany. "The internet has had a profound effect on our business," says David Abney, UPS's international president. UPS now handles more than 14m packages worldwide every day.

It is striking that postal firms—once seen as obsolete because of the emergence of the internet—are now finding salvation from it. People are paying more bills online and sending more e-mails instead of letters, but most post offices are making up for the thanks to e-commerce. After four years of profits, the United States Postal Service has cleared its loss $11 billion of debt.

Firms such as Amazon and eBay have even helped make Britain's Royal Mail profitable. It needs to be: on January 1st, the Royal Mail lost its 350-year-old monopoly on carrying letters. It will face growing competition from rivals, such as Germany's Deutsche Post, which has expanded vigorously after partial privatization and now owns DHL, another big international delivery company.

Both post offices and express-delivery firms have developed a range of services to help e commerce and eBay's traders—who listed a colossal 1.9 billion items for sale last year. Among the most popular services are tracking numbers, which allow people to follow the progress of their deliveries on the internet.

How long will the boom continue? The parcel companies clearly see plenty of growth ahead—they are making big investments in new cargo hubs and aircraft. But in some areas the limits are already being tested. On February and Amazon, the best-known online retailer, announced a 17% increase in sales to almost $3 billion in its busy fourth quarter. But profits fell because of higher shipping costs.

Amazon has been subsidizing shipping to help boost its sales. Last year it introduced "Amazon Prime", which provides free shipping in return for a one-off payment. The tactic is "very expensive", Amazon's chief executive, Jeff Bezos, told analysts. But, he added, the early signs are that it does at least encourage people to buy more.

Yet internet-only e-tailers such as Amazon are also facing stiffer competition from bricks-and mortar stores improving their own online offers, including supermarket giants such as Wal-Mart. Some of these also offer "pick-up in-store" options for people buying online but wanting to avoid shipping costs or having to stay at home to take deliveries. Some of the parcels firms have been experimenti

easure without pain. The things that bring the greatest joy carry the greatest potential for loss the disappointment. Today, surrounded by promises of easy happiness, we need someone to tell us that it is ok not to be happy, that sadness makes happiness deeper. As the wine-connoisseur movie Sideways tells us, it is the kiss of decay and mortality that makes grape juice into Pinot Noir. We need art to tell us, as religion once did, Memento mori: remember that you will die, that everything ends, and that happiness comes not in denying this but in living with it. It's a message even more bitter than a clove cigarette, yet somehow, a breath of fresh air.

currency" for teens?