Read the following article and select the best answer. Article: The Nadam Festival, usually held from June 4 to 9(lunar calendar), is one of the most exciting and colorful festivals in the Inner Mongolian Autonomous Region. At the center of the festivities are the fierce horse racing, archery and wrestling competitions, the traditional sports of the Mongolian warriors (the three "manly" sports, though young girls and women participate in the horse racing and archery contests). In Mongolian, the word "Nadam" means "amusement and entertainment" and the festival began in 1225 AD, when Genghis Khan organized an expedition to the west and got control of Khwarezm. In order to celebrate the victory they held the magnificent Nadam Fari. The Mongolians used this exciting gathering as a big occasion to compete in the horse racing, Mongolian wrestling and archery, which were regarded as the three basic skills of men. Gradually more and more events were added to the festival, such as marksmanship , chess, reciting epics, polo , film, drama, singing, dancing, track and field competitions and so on. There are three kinds of Nadam, the big one, the medium one and the small one. The big Nadam requires the participation of 512 wrestlers and 300 horses and usually lasts 7-10 days while the medium Nadam will have the participation of 256 wrestlers and 100-150 horses, lasting 5-7 days. And 64 or 128 wrestlers and 30 or 50 horses will take part in the small Nadam, which lasts 3-5 days. Anyone can apply to compete in Nadam, regardless of his or her ethnic origin and religious belief. Nadam has become a popular artistic and sports event participated in by people of all ages. Boys and girls can also take the opportunity to show their love, i. e. the so-called "meeting at aobao". In addition to sports competition, people also make good use of this gathering to hold talks and establish relations in economic trade or to interchange goods. Question: What's the main idea of the passage? - The introduction of the Nadam Festival. - The origin of the Nadam Festival. - The sports events of the Nadam Festival. - The modern style of the Nadam Festival.
The introduction of the Nadam Festival.

Read the following article and select the best answer. Article: We may not be aware of it, but ordinary family homes in the U.S. and the rest of the world are not energy-efficient. Most of their energy goes to heating and cooling, and a lot of it is wasted, as warm air and cool air escape through fireplace chimneys and thin or poorly fitting windows and doors. A passive house loses almost none."Imagine a thermos ,"said housing developer Brendan O'Neill."You have insulation everywhere, and it's basically completely sealed. And so the idea is to build a house like a thermos. So the windows are sealed. There's insulation completely surrounding the building. We make it as sealed as possible." A 147-square-meter passive house, presented by O'Neill Development Corp. as a demonstration unit just outside Washington, was brought to the site in two boxes."Once it's set and put together, it takes about four weeks to complete the outside construction, to put down carpets,"O'Neill said."If everything is set in place, you put a house like this together in about four months."The total cost of building it was $325,000, or about 17 percent more than constructing an ordinary house. But its utility bill is only around $20 monthly, or one-tenth the amount for the average house of the same size. While passive houses have been around for a long time, the idea has never taken root in the U.S. There was no driving force to push it. However, David Peabody, an architect who designs passive houses said,"I think climate change is now becoming a larger issue. And I think building standards are catching on to that. So people are becoming more aware of energy."Peabody said the cost of building passive houses could come down."What really makes sense for truly affordable housing,"he said,"is to build multi-storey buildings." Question: What is the feature of a passive house? - There're no windows or chimneys. - There's little space to place furniture. - Its building cost is ly high. - It takes about four weeks to build one.
Its building cost is ly high.

Read the following article and select the best answer. Article: Several decades ago, US sociologists developed a series of universal facial images supposed to represent the seven basic human emotions: happiness, sadness, surprise, fear, disgust, anger and neutrality . But now, a new study by researchers at the University of Glasgow indicates that these standardized facial images aren't so universal at all. For the study, the Scottish researchers found 13 Western Caucasians (mainly Europeans) and 13 East Asians (mostly Chinese students). The volunteers were shown the standardized facial images and asked to identify the emotions being expressed. At the same time, the researchers electrically monitored the eye movements of the volunteers. According to the results, published in the journal Current Biology, the Asian participants had a harder time than the Caucasians telling the difference between a face meant to look fearful compared with one showing surprise, and a face supposedly expressing disgusting compared with one displaying anger. "This strongly suggests that the meanings of facial expressions are different across cultures," says Rachael Jack, who led the study. The study also showed that the volunteers focused on different parts of the face in their efforts to understand the underlying emotions. "Westerners look at both the eyes and the mouth to the same degree, yet Easterners favor the eyes and overlook the mouth. This means that Easterners has difficulty distinguishing facial expressions that are similar around the eyes," Ms Jack says. The faces representing fear and surprise" both have big, wide open eyes, while the mouths are very different," she notes. "It would be difficult to distinguish between the two if you didn't look at the mouth." So why would different cultures express emotions in different ways? Ms Jack thinks it may be considered impolite in some Asian cultures to display certain emotions in an obvious manners, and that they use more subtle ways to express them. In particular, muscle movements around their eyes could be more important for expressing... Question: The Asian volunteers may have focused on the eyes because _ . - Easterners believe using the eyes to express feelings is the best way - it's polite to focus on other people's eyes in some Asian countries - Easterners tend to use the eyes to express their emotions - it's easier for Easterners to communicate using the eyes
Easterners tend to use the eyes to express their emotions