Article: Most people know precious gemstones by their appearances. An emerald flashes deep green, a ruby seems to hold a red fire inside, and a diamond shines like a star. It's more difficult to tell where the gem was mined, since a diamond from Australia or Arkansas may appear the same to one from the Democratic Republic of the Congo. However, recently, a team of scientists has found a way to identify a gemstone's origin. Beneath the surface of a gemstone, on the tiny level of atoms and molecules , lie clues to its origin. At this year's meeting of the Geological Society of America in Minneapolis, Catherine McManus reported on a technique that uses lasers to clarify these clues and identify a stone's homeland. McManus directs scientific research at Materialytics, in Killeen, Texas. The company is developing the technique. "With enough data, we could identify which country, which mining place, even the individual mine a gemstone comes from," McManus told Science News. Some gemstones, including many diamonds, come from war-torn countries. Sales of those "blood minerals" may encourage violent civil wars where innocent people are injured or killed. In an effort to reduce the trade in blood minerals, the U.S. government passed law in July 2010 that requires companies that sell gemstones to determine the origins of their stones. To figure out where gemstones come from, McManus and her team focus a powerful laser on a small sample of the gemstone. The technique is called laser-induced breakdown spectroscopy. Just as heat can turn ice into water or water into steam, energy from the laser changes the state of matter of the stone. The laser changes a miniscule part of the gemstone into plasma, a gas state of matter in which tiny particles called electrons separate from atoms. The plasma, which is superhot, produces a light pattern. (The science of analyzing this kind of light pattern is called spectroscopy.) Different elements produce different patterns, but McManus and her team say that gemstones from the same area... Question: Why did the U.S. government pass law that requires companies selling gemstones to determine the origins of their stones? Yes or no, is the answer "To reduce the trade in blood minerals."?
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Article: The interview has been going on for about 20 minutes and everything seems to be going well.Then, suddenly, the interviewer asks an unexpected question, "Which is more important, law or love?" Job applicants in the West increasingly find themselves asked strange questions like this.And the signs are that this is beginning to happen in China. Employers want people who are skilled, enthusiastic and devoted.So these are the qualities that any reasonably intelligent job applicant will try to show no matter what his or her actual feelings are.In response, employers are increasingly using the questions which try and show the applicant's true personality. The question in the first paragraph comes from a test called the Kiersey Temperament Sorter.It is an attempt to discover how people solve problems, rather than what they know.This is often called aptitude test. According to Mark Baldwin of Alliance, many job applicants in China are finding this type of questions difficult."When a Chinese fills out an aptitude test, he or she will think there is a right answer but they may fail because they try to guess what the examiner wants to see." This is sometimes called the prisoner's dilemma .Applicants are trying to act cleverly in their own interest, but they fail because they don't understand what the interviewer is looking for.Remember that in an aptitude test, the correct answer is the honest answer. Question: From the passage we know that _ . Yes or no, is the answer "aptitude test is becoming world-wide popular"?
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Q: Article: A story from the Bible tells of old Babylon, where the men decided to build a tower that would touch the sky.But God was unhappy, and he made them speak different languages.They couldn't understand each other, so their dream never came true. Yet the dream remains alive: if all men speak the same language, they can do anything.L.L.Zamenhof from Poland was among the men who this dream.He developed Esperanto between 1877 and 1885. As the most successful man-made world language, it is spoken by over two million people around the world.Last month, the World Esperanto Congress , dealing with language rights, ended in Sweden.The 2004 conference will be held in Beijing.Most Esperanto speakers are in Central and Eastern Europe and in East Asia, particularly Chinese mainland. Esperanto has two advantages.First, it's easy.Each letter has exactly one sound and there are just 16 basic grammar rules.The second advantage is that it belongs to no one country.But Esperanto has only reached a small number of people compared with natural languages widely used around the world-such as English or Chinese.While these languages are deeply connected with their nations and cultures, Esperanto doesn't have this background. Will Esperanto really become a global language? It remains a question. Question: What does the story mainly talk about? Yes or no, is the answer "The most successful planned language-Esperanto."?
A: No

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Article: Snow-melting Agent A heavy snow can kill pests and this means a good harvest next year.This will bring as well as trouble to urbanites. On Nov.16,2003,a cold air current brought a heavy snow to Beijing.To prevent traffic jams,related government departments mobilized people to clear off snow on streets. One of the most effective ways to clear off snow on roads is to scatter snow-melting agent on the roads.The major component of the snow-melting agent is salt.The snow-melting agent can make snow stop from freezing,make it easier to clear off the road,and allow traffic to flow smoothly.But it also brings about some hidden dangers.In the spring of 2003,over 300 000 trees in Beijing urban districts died.After analyzing soil around these trees,experts discovered that the salt content of these soils was 392 times higher than normal.Where did the excessive salt come from?After investigating,forestry experts found that when clearing snow in the winter,people usually heap snow containing snow-melting agent at trees' roots,and that when the snow melts,this agent penetrates the soil and increases its salt content.The snow-melting agent indirectly killed the trees. Statistics show that during a heavy snow in 2002,over 1000 tons of snow-melting agent was scatterred on streets in Beijing.Snow water containing a large amount of snow-melting agent got into the soil through sewers. In addition,salt in the snow-melting agent can expedite the corrosion of steel bars in concrete buildings and cause the concrete to crack and peel,shortening the life of roads. Scientists and government officials are required to solve traffic problems caused by heavy snows as soon as possible and at the same time try to reduce the negative effects of the snow-melting agent.This is a difficult problem placed before them.Related authorities have framed some local criteria to regulate the production and use of snow-melting agents. Now,more harmless snow-melting agents are being developed.Now that even snow-melting agents that meet today's criteria must... Question: This text most probably appears in _ . Yes or no, is the answer "a magazine on environmental protection"?
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No