Australia's koalas could die out within 30 years unless immediate action is taken to stop the losing in population, according to researchers. They say development, climate change and bushfires have all combined to reduce the number of wild koalas sharply.

    The Australian Koala Foundation said a recent survey showed the population could have dropped by more than half in the past six years. The number of koalas was once estimated to be more than 100,000, but now is as few as 43,000.

    The foundation collected field data from 1,800 sites and 80,000 trees to calculate the numbers. In one area in northern Queensland estimated to have 20,000 koalas a decade ago, a team of eight people could not find a single animal in four days of searching.

    The foundation said besides problems caused by cutting down forests, hotter and drier conditions because of global warming had reduced the nutritional value of their main food, eucalyptus (桉树) leaves, leading to poor nutrition for them. Koalas, which live in the forests in Australia's east and south, are very picky about what types of the leaves they eat.

    Foundation chief Deborah Tabart said: “The koalas are missing everywhere we look. It's really no tree, no me. If you keep cutting down trees you don't have any koalas.”She is hoping the new figures will persuade the government's Threatened Species Steering Committee (TSSC) to list the koala as threatened. But committee chairman Bob Beeton said a decision was not likely recently and the koala's status as one of the country's favorite animals would not be a factor. “There's a number of species which are attractive and people have special feelings towards them. We don't consider that,” Mr Beeton said.

阅读下列短文，从每题所给的四个选项 （A 、B 、C  和 D ）中，选出最佳选项。

    The ancient city of Xi'an in China holds many treasures. And last month, archaeologists working there made an important discovery—a buried palace built in the third century B.C. to honor China's first emperor.

    The entire palace measures roughly 2,260 feet long by 820 feet wide. It includes 10 courtyard houses and one main building. Archaeologists found bricks and pieces of pottery at the site of the palace, as well as the remains of walls and roads.

    The palace is part of the massive burial complex of Emperor Qin Shihuangdi. He conquered seven warring kingdoms and united ancient China in 211 B.C.

    Qin Shihuangdi wanted his legacy, or accomplishments, to be remembered forever. So he hired more than 700,000 workers to build his funeral complex in Xi'an. It represents a miniature version of his vast kingdom.

    The complex also includes the world-famous terra-cotta army, a collection of more than 8,000 life-size clay statues. These sculptures represent soldiers, acrobats, and horses from the Qin Dynasty (221 B.C.-206 B.C.). Scientists have not yet found all these terra-cotta warriors, even though they discovered more of the statues last summer.

    Farmers discovered the complex by accident in 1974. Since then, scientists studying the site have learned a great deal about life in ancient China. But much of the emperor's tomb has yet to be dug up, or unearthed. Many of the artifacts (objects from the past) are so old that scientists cannot preserve them.

    "Archaeologists fully acknowledge that nobody in the world has the technology (to safely dig up Xi'an's treasures) yet," explains Kristin Romey, an expert on Chinese archaeology.

    But as technology improves, archaeologists will keep digging to uncover the rest of the wonders that still lie buried in Xi'an.

    "It's one of the most important archaeological discoveries that's waiting to be made," says Romey, "and we know where it is."

    Meeting people from another culture can be difficult. From the beginning, people may send the wrong signal. Or they may pay no attention to signals from another person who is trying to develop a relationship.

    Different cultures emphasize the importance of relationship building to a greater or lesser degree. For example, business in some countries is not possible until there is a relationship of trust. Even with people at work, it is necessary to spend a lot of time in "small talk", usually over a glass of tea, before they do any job. In many European countries, like the UK or France, people find it easier to build up a lasting working relationship at restaurants or cafe rather than at the office.

    Talk and silence may also be different in some cultures. I once made a speech in Thailand. I had expected my speech to be a success and start a lively discussion, instead there was an uncomfortable silence. The people present just stared at me and smiled. After getting to know their ways better, I realized that they thought I was talking too much. In my own culture, we express meaning mainly through words, but people there sometimes feel too many words are unnecessary.

    Even within Northern Europe, cultural differences can cause serious problems. Certainly, English and German cultures share similar values, however, Germans prefer to get down to business more quickly. We think that they are rude. In fact, this is just because one culture starts discussions and makes decisions more quickly.

    People from different parts of the world have different values, and sometimes these values are quite against each other. However, if we can understand them better, a multicultural environment will offer a wonderful chance for us to learn from each other.

    Women in northern European nations are closest to equality with men on wages, education, health and education. That is the finding of a report by the World Economic Forum. The United States ranked 28th. On Friday, President Barack Obama announced the government will require large businesses to report how much they pay men and women. The data will be used to target companies that pay women less to do the same jobs.

    According to the World Economic Forum report, women worldwide continue to lag behind men on wages. Based on current trends, they will need 126 years to catch up, according to the report. Women are making progress. But they still only earn what men did 10 years ago, say the report's authors. The report measures the gender gap for women in 145 nations for health, education, economic opportunity, and political power. Women have not achieved equality in any of the 145 nations included in the survey, says the report.

    Women came closest to equality in four Northern European nations – Iceland, Norway, Finland and Sweden. Ireland ranks No. 5. At the bottom of the women's gender ratings are Yemen, Pakistan, Syria, Chad, Iran and Jordan.

    More women than men are attending colleges in 97 nations. But women make up a majority of skilled workers in only 68 nations. Women control the majority of government and political positions in only four.

    At last week's World Economic Forum in Davos, Switzerland, Sheryl Sandberg, chief operating officer at Facebook, spoke about gender equality. “The reason to work towards equality – whether woman or man – is that it is better for you,” Sandberg said. “We should be doing this not because it's the right thing, but because it's the smart thing. Do it because it will help you.” The World Economic Forum completed its worldwide 2015 gender gap survey in November.

New York Walking Tour

    Statue of Liberty and Ellis Island Walking Tour

    Start this exciting guided 4-hour tour by getting early Reserve Line Access boarding on the ferry to Liberty Island. Once there, go inside the base of the statue and head to the observation decks for an awesome view of New York City and its surroundings. Then come back on the ferry to Ellis Island to learn about the history of immigration(移民)to America that took place here between 1892 and 1954.

    Central Park Walking Tour

    Walk through Central Park's most picturesque highlights on a 2-hour tour with a professional photographer. Remember your New York City adventure with unforgettable images of you with family or friends as you circle the towers at Belvedere Castle, walk through paths with flowers in the Conservatory Garden, or feed the swans by the Loeb Boathouse.

    New York City Architecture Walking Tour

    Learn about the history of the buildings that define the New York City skyline on a 3-hour walking architecture tour. Walk down the famous 42nd Street corridor with a longtime New York resident(居民)and architectural expert, stopping along the way to learn about Midtown Manhattan's most iconic structures like the Chrysler Building, Ford Foundation, Grand Central Station and the New York Public Library.

    Greenwich Village Walking Tour

    Greenwich Village is one of New York City's most beautiful and famous neighborhoods. Take a guided 2-hour walking tour of this legendary Lower Manhattan space. Hear about the famous artists who once lived here, from Edgar Allan Poe to Bob Dylan, Jimi Hendrix and countless others. Walk the winding streets and visit popular Washington Square Park, reliving more than 200 years of history.

    Who cares if people think wrongly that the Internet has had more important influences than the washing machine? Why does it matter that people are more impressed by the most recent changes?

    It would not matter if these misjudgments were just a matter of people's opinions. However, they have real impacts, as they result in misguided use of scarce resources.

    The fascination with the ICT (Information and Communication Technology) revolution, represented by the Internet, has made some rich countries wrongly conclude that making things is so "yesterday" that they should try to live on ideas. This belief in "post-industrial society" has led those countries to neglect their manufacturing sector (制造业) with negative consequences for their economies.

    Even more worryingly, the fascination with the Internet by people in rich countries has moved the international community to worry about the "digital divide" between the rich countries and the poor countries. This has led companies and individuals to donate money to developing countries to buy computer equipment and Internet facilities. The question, however, is whether this is what the developing countries need the most. Perhaps giving money for those less fashionable things such as digging wells, extending electricity networks and making more affordable washing machines would have improved people's lives more than giving every child a laptop computer or setting up Internet centres in rural villages, I am not saying that those things are necessarily more important, but many donators have rushed into fancy programmes without carefully assessing the relative long-term costs and benefits of alternative uses of their money.

    In yet another example, a fascination with the new has led people to believe that the recent changes in the technologies of communications and transportation are so revolutionary that now we live in a "borderless world". As a result, in the last twenty years or so, many people have come to believe that whatever change is happening today is the result of great technological progress, going against which will be like trying to turn the clock back. Believing in such a world, many governments have put an end to some of the very necessary regulations on cross-border flows of capital, labour and goods, with poor results.

    Understanding technological trends is very important for correctly designing economic policies, both at the national and the international levels, and for making the right career choices at the individual level. However, our fascination with the latest, and our under valuation of what has already become common, can, and has, led us in all sorts of wrong directions.