Few laws are so effective that you can see results just days after they take effect. But in the nine days since the federal cigarette tax more than doubled-to $1.01 per pack-smokers have jammed telephone "quit lines" across the country seeking to kick the habit.

    This is not a surprise to public health advocates. They've studied the effect of state tax increases for years, finding that smokers, especially teens, are price sensitive. Nor is it a shock to the industry, which fiercely fights every tax increase.

    The only wonder is that so many states insist on closing their ears to the message. Tobacco taxes improve public health, they raise money and most particularly, they deter people from taking up the habit as teens, which is when nearly all smokers are addicted. Yet the rate of taxation varies widely.

    In Manhattan, for instance, which has the highest tax in the nation, a pack of Marlboro Light Kings cost $10.06 at one drugstore Wednesday. In Charleston, S.C., where the 7-cent-a-pack tax is the lowest in the nation, the price was $4.78.

    The influence is obvious.

    In New York, high school smoking hit a new low in the latest surveys-13.8%, far below the national average. By comparison, 26% of high school students smoke in Kentucky. Other low-tax states have similarly depressing teen-smoking records.

    Hal Rogers, Representative from Kentucky, like those who are against high tobacco taxes, argues that the burden of the tax falls on low-income Americans "who choose to smoke".

    That's true. But there is more reason in keeping future generations of low-income workers from getting hooked in the first place. As for today's adults, if the new tax drives them to quit, they will have more to spend on their families, cut their risk of cancer and heart disease and feel better.

    Tu Youyou, an 84-year-old female（女性）scientist, became the first Chinese to win a Nobel Prize in science on Oct 5. Before that, she ever won the 2011 Lasker Award for finding out artemisinin (Qinghaosu), which saved millions of lives. She was grateful（感激的）for the Lasker prize, but said, “It is just a scientist' duty. I will go on fighting for the health of all humans.”

    Tu kept her work in the 1960s and 1970s. In that age, Malaria (疟疾) could took away people's health. Scientists all over the world had already tried over 240, 000 times but failed. Tu Youyou, a member of the Academy of Traditional Chinese Medicine, Beijing, began to study Chinese herbs.

    Before 2011, people didn't know Tu very much. Many friends played jokes with her “the Professor of Three None's” : no degree（学位）, no study experience abroad, not a member of any Chinese national colleges. But she is hard-working. She read a lot of traditional Chinese medicine books and did a lot of researches on the disease.

    In February, 2012, Tu was named National Outstanding Females (One of the Ten) Tu is now a model of Chinese medical workers.

    In 1996, someone found some very old clothes in an old mine in Nevada, USA; they included a pair of dirty old jeans. Today, those jeans are very valuable, and they are now in the Levi Strauss Archival Collection in San Francisco. The jeans, which are over 120 years old, are the oldest pair of Levi's 501 jeans in the world.

    They are almost the same as a modern pair of 501's; there are just some small differences in the detail. For instance, today's 501's have two back pockets, while the old pair just has one.

    In 1853, a young tailor from Germany, called Levi Strauss, began working in San Francisco; Levi sold thick canvas(帆布) to miners; the miners used the canvas to make tents.

    One day, a miner told Levi that he could not find trousers that were strong enough for work in the gold mines. Levi decided to make some trousers out of canvas. Very soon, he sold all the canvas trousers he had made! They were just what miners wanted.

    However, the canvas was rather heavy and stiff(坚硬的). Levi therefore began to look for a different textile(织物). Soon he found a heavy textile from France; it was denim(斜纹粗棉布). Denim was a bit lighter than canvas, but it was very strong. It was ideal for miners.

    However, original denim was almost white, and miners did not like the color! Their denim trousers got dirty as soon as they began working! Levi Strauss therefore decided to use colored denim, and he chose dark blue. In 1873, he began to make denim trousers with metal rivets(铆钉) to make them stronger. “Blue jeans” arrived!

Levi's jeans were so popular that his company got bigger and bigger. Soon, other firms were making blue jeans too. Miners liked them, but so did cowboys and other working men. Blue jeans became classic American working trousers. After the Second World War, jeans became popular all over the world. Today, blue jeans are made all over the world.

    In the U. S. state of Washington, a road called Interstate(州际公路；州际的)90 cuts through a wild mountainous area to reach the city of Seattle. For the area's many kinds of animals, busy high- way greatly limits their movements. Animals need to move to find food, to find mates, to find new places to live as their populations expand or just when conditions change, like a fire breaks out. Crossing I-90 – as the road is called – is a risky but sometimes necessary act. But soon, animals will have a safer choice. They will be able to go above it.

    To help the animals, the state is finishing work on its largest - ever wildlife bridge. The 11-meter-tall, 20 - meter - wide bridge begins in the forest. It forms two arches above the highway, one for each direction of traffic. Workers are adding fencing anti plants to help guide the animals across the bridge, Two-meter-thick walls will help block noise from vehicles below. Scientists chose the area because it is within a natural migration(迁徙)path for some animals.

    The I -90 bridge is part of a growing number of wildlife crossings across the United States. Some are fences, some are overland bridges，and some are underpasses. They all aim to keep drivers and animals away from each other.

    A U. S. Transportation Department study found crashes between animals and humans rose year by year. The accidents made up about 5 percent of all crashes nationally, and cost the economy (经济)about ＄8 billion. Such costs come from car repaid, emergency room visits and removal of the dead animals on roads. Collisions between animals and drivers are rarely deadly to people. But they are often deadly to wildlife. The study also found that 21 endangered or threatened species in the U.S. are affected by vehicle hits. Bridges, underpasses and fencing reduce I he area's animal - driver collisions by 80 percent.

    Most of the wildlife bridges are in western states. Many other areas also need such paths. But finding money for more crossings is "the- number - one problem". Patty Garvey — Darda of the U. S. Forest Service has worked on the I - 90 crossing from the start of the project. She says the $ 6 - million bridge will one day pay for itself because the highway will not have to be fully or partly closed each time a large animal is struck. "If you shut clown Interstate 90, you shut down interstate trade." she adds.

The Secret to Happiness

    A new report makes it clear that when it comes to the life satisfaction of UK citizens, the ball is in the government's court. For some time, sensible people have been arguing that governments need to focus less on economic growth and more on the wellbeing（幸福）of citizens. Be careful what you wish for.

    In response to this demand, from 2011 David Cameron instructed the Office for National Statistics to gather data on people's self-reported happiness and life satisfaction. Little practical good has come from this so far, but a new report by George Bangham for the Resolution Foundation is one of the best attempts to make useful sense of the data. He concludes: "The best prospects for policymakers targeting future increases in national wellbeing lie in raising job quality, raising incomes, particularly at the lower end, and policies to improve security in the housing market."

    The age correlation（相关）turns out to be certainly linked to politics, despite the fact that no political party can make a difference to your date of birth. The happiness of pensioners is not just a function of their age, but of policy. On average, 70-year-old boomers today are the most affluent retirees in history, often owning their own homes and in receipt of generous pensions. People of 70 are not going to be as content in 30 or 40 years' time if they are unable to retire, don't own their homes and have small incomes.

    However, there is one respect in which teens and recent retirees are remarkably similar. Compared to other age groups, they tend to inhabit a sweet spot of having high degrees of freedom. The typical 16-year-old has new freedoms without ever having had any serious responsibilities. The typical 70-year-old, having experienced a lifetime of work and family duties, has a very different kind of freedom, one born from relief.

    Besides, it should not surprise us to find that people tend to be happier when they have fewer worries. But this, too, has important political implications. If the government is really interested in raising overall national happiness, it has to make sure as many citizens as possible feel secure in their health, their housing and their incomes. Different states' records in achieving this is one important reason why Nordic countries repeatedly score highly in international life satisfaction surveys and North America underperforms relative to its GDP.

    Whichever way you look at it, there is no escaping the conclusion that increasing wellbeing across society requires joined-up, long-term policy efforts. This is exactly what the Resolution Foundation recommends.

Hamlet, the prince of Denmark, has come back from university to find that his father, the old king, is dead. His mother has married his father's brother, Claudius, who is now king of Denmark. Hamlet is shocked that his mother has married so soon after his father's death, and angry that she has married Claudius.

Soon, a ghost (幽灵) is seen walking on the castle walls. The ghost looks like Hamlet's father, the dead king. When Hamlet sees the ghost, he is told that it is the ghost of his father. "I am your father's spirit," the ghost tells Hamlet. It tells him that Hamlet's father did not die naturally, but was murdered by his brother Claudius. As the king slept, Claudius put poison into his ear, causing the king a painful death. The ghost tells Hamlet to take revenge on Claudius for murdering his father.

Hamlet can't believe his mother would marry the man who murdered her husband. He becomes depressed, and he thinks about killing himself: "To be or not to be, that is the question. " Hamlet decides to pretend he is mad while he tries to find out if King Claudius really killed his father. Claudius soon notices that Hamlet is acting strangely, so he asks Polonius, his adviser, to discover if it is true…