A day in the life of 18-year-old David Lanster is full of teenage activities: school, baseball practice, homework. And then he starts cooking. “Some nights I’m up until 1 a.m. making pies, or even later if we’re cooking beef,” said the student at Ransom Everglades High School in Florida, US.

For the past year, Lanster and Kelly Moran, his classmate, have been hosting fancy dinner parties at Lanster’s parents’ home. Their meals have 17 courses and are all made by them. Their guests used to give them gifts to thank them, until the pair decided to do something nice for charity. “We got some really great Miami Heat tickets, a nice watch, and many kitchen machines,” Lanster said. “But we wanted to make this something positive for people rather than us.”

Lanster and Moran focused on Common Threads, a charity(慈善机构) that helps to teach kids in poor neighborhood to cook and make healthy eating choices. The young cooks ask their guests to give however much they want as payment for their meals. It all goes to Common Threads because Lanster’s parents cover their food costs. After their last 12-person event, Lanster and Moran gave $1,600 to the charity. Now, they’re taking their show out of the kitchen and on the road. Lanster and Moran have started to organize private dinner parties in a similar way: the host pays for the ingredients(食材), and the guests make a donation (捐赠) to a charity.

Outside the kitchen, the two are busy preparing their college applications. Neither is sure what they will do in the future, but they’ve promised their parents that they’ll leave cooking alone until they finish high school.

What is the most recognizable object in the world? Could it be a football or a big computer? No, the answer is a Coca-Cola bottle. Hundreds of millions of people can recognize a Coke bottle by its shape. Unlike any other famous commercial logo, the famous Coca-Cola logo has not changed in 100 years!

In 1886, John Pemberton, a druggist in Atlanta, Georgia, invented a new type of syrup (糖浆), using coca leaves, sugar and cola nuts, plus a few other secret ingredients. Pemberton sold it as a medicine; and with coca (the source of cocaine), it must have made people feel good! Nevertheless, Pemberton's medicine was not very successful, so he sold his secret formula (配方) to another druggist, Asa Candler, Candler was interested, because he had another idea; he thought that Pemberton's "medicine" would be much better if it was mixed with soda. Candler was thus the man who really invented the drink Coca-Cola. At first he sold it in his drugstore; then he began selling the syrup to other drugstores, where it was used with their soda fountains. Candler also advertised his new drink, and soon people were going to drugstores just to get a drink of Coca-Cola. Before long. other people became interested in the product, including a couple of businessmen who wanted to sell it in bottles. Candler sold them a license to bottle the drink, and very quickly the men became millionaires. Then in 1916 the famous bottle, with its very distinctive shape, was designed.

During the First World War (1914-1918), American soldiers in Europe began asking for Coca-Cola, so the Coca-Cola company began to export it to Europe. It was so popular with soldiers that they then had to start bottling the drink in Europe. Today. Coca-Cola is made all over the world, including Russia and China; it is the world's most popular drink.

As for the famous formula, it is probably the world's most valuable secret! The exact ingredients for making Coca-Cola are only known to a handful of people. And as for the coca that was in the original drink, it was removed in 1903, for it was a dangerous drug. Today's Coca-Cola contains caffeine, not cocaine!

When the leaves begin to change their colors and the birds head south, we know the season is starting to change. On September 7 comes White Dew (白露), the 15th solar term (节气) of the year. It indicates (标志着) the beginning of the cool autumn. As the temperature falls, white dew is often seen on the grass and trees at night.

For w riters and poets, autumn is a difficult season to describe. It ’s the end of the summer, and therefore a little sad. The days seem to get shorter, and when you wake in the morning, t here’s mist(薄雾) and it’s cooler. Winter is just around the corner.

American writer Ernest Hemingway wrote in his book A Moveable Feast (《流动的盛宴》), “You expected to be sad in the fall. Part of you died each year when the leaves fell from the trees and their branches (枝条) were bare (光秃秃的) against the wind and the cold, wintry light. ”

But on the other hand, autumn has its good side. There are so many changes at this time of year, such as the colorful leaves and cooler nights. French w riter Albert Camus even thought autumn was a second spring,   “when every leaf is a flower.” This view is also found in the most famous autumn poem in English literature, To Autumn by John Keats. In that poem, Keats says that autumn has its own songs, just like spring.

Another theme of this season is wisdom (智慧). The arrival of autumn is thought to be similar to a person becoming mature (成熟的).

The great Irish poet W.B. Yeats used this idea in his poem The Wild Swans at Coole (《库尔的野 天鹅》), writing about the changing seasons in Coole Park in the west of Ireland. Seeing and counting 59 swans, he remembers first making the count as a young man. Seeing the swans do the same thing for all those years, he’s reminded (提醒) that even though we get older, our hearts always stay the same age.