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I'm taking a test and have to guess the right answer to the question after the article. Article: Special trees that grow faster, fight pollution, produce better wood, and even sense chemical attacks are being planted by scientists in the US. When 40 per cent of Hawaii's US$14 million-a-year papaya industry was destroyed by a virus five years ago, work began on creating genetically engineered trees. Researchers successfully introduced seeds that were designed to resist the virus.Since then, more and more people have been testing genetically engineered trees.Some researchers put special bacteria into trees to help them grow faster and produce better wood.Others are trying to create trees that can clean polluted soil.Meanwhile fruit farmers are looking for trees that are strong enough to resist worms, and paper companies want trees that produce more wood and therefore more paper. The Pentagon even gave the researchers US$500,000 this year after they developed a pine tree that changes its colours if it senses a chemical attack.So far, the poplar, eucalyptus , apple and coffee trees are among those being engineered.All this can be done today because we have a better understanding of tree genomes . However, some people fear that the genetically engineered trees will cause dangerous results.They are worried that the new trees will breed with natural species and change the balance of the forest environment. "It could be destructive," said Jim Diamond, an environmentalist. "Trees are what is left of our natural environment and home to many endangered species." But researchers insist that science could give nature a fighting chance against both natural and man-made dangers.They hope to answer the critics by stopping the new trees from breeding, so their effect on the environment can be controlled. Question: What caused the American scientists to work on special trees? Options: A: Tree genomes are mapped out so scientists know how to improve trees. B: Great numbers of trees have been lost due to attacks by viruses. C: Researchers successfully introduced seeds designed to resist the virus. D: They think science could give nature a fighting chance against both natural and man-made dangers.
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B

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I'm taking a test and have to guess the right answer to the question after the article. Article: *Walking tall, and safely Some women simply refuse to give up high heels, despite slush ( ) , ice and snow. Now there's Winter Trax for them, designed to fit over high-heel boots and make their walk on the wild side a little more safe. Metal coils ( ) wrap around rubber at the front end of the shoe, with the heel end open. *Snow skirt steps up into fashion Down with snow pants. Up with snow skirts! Montreal's Fantasy Wolrd Heroes has created these skirts to layer over minis and jeans as the snow season sets in. In a range of colors and available in wool, lends and quiltings, they come in four sizes and adjustable. * Doc Martens, those army-inspired leather boots, are back. They were last popular when Kurt Cobain was all the rage( ). So far, just a few teens and fashion people have been spotted wearing the slight fat boots, but they have already appeared on stylish models like Irina Lazareanu and Agyness Deyn. Neon stores sold Doc Martens 15 years ago and its owner Irving Tajfel wasn't sure at first if he was ready to relive the trend. "I couldn't believe my eyes when I saw Doc Martens at a fashion fair in Barcelona last year. Then I saw all the cool fashion kids wearing them in Paris. That got me thinking that it was about time Doc Martens came back in style here." Tajfel said. Question: We can know from the passage that WinterTrax _ . Options: A: makes women like Doc Martens more B: protects the back end of high-heel boots C: makes women enjoy high-heel:boots in winter D: protects women from being robbed
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C

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I'm taking a test and have to guess the right answer to the question after the article. Article: MUMBAI, India --The children in their party clothes on the stage were very excited when they received the award. And the two of them said, "It's unbelievable!" Nine-year-old, Rubina Ali, and Azharuddin Ismail, 10, were living a very different life and obviously loving every minute of it. The two, some of the child stars of the Oscar-winning Slum dog Millionaire(<<>> )movie, know the Indian slums very well. That was where they grew up, and it is where they will return at the end of their Hollywood dream trip. But before going back home, there was an interview with the host, Ryan Seacrest. During the interview they smiled and repeated their disbelief in what was happening to them. To their surprise, their movie won first place in the Oscars. When the two received the award, it was late morning in the children's home city of Mumbai, where family, friends and many fellow residents of the slums watched the result from Hollywood. "I don't really know what the Oscars are," Rubina's mother said. "I'm just glad my daughter looks happy, though she told me she missed Indian food." "Our children lead a dog's life," Rubina's mother said, pointing out the rubbish everywhere, the open drains and the lack of education opportunities. In a few days they will be back in Mumbai and back in the slums which are their home. Fortunately, according to media reports, the movie's director, Danny Boyle, has promised to help the children chosen from the slum and make sure they will go to a proper school. The two don't need to worry about their daily lives because of the Oscar success of Slum dog Millionaire. But the poverty and lack of opportunity --the central theme of the movie--is always all around. Question: According to the author, the value of the movie is that _ . Options: A: it has been given an Oscar Award B: it has made the two children famous C: its central theme has become known to the public D: it has become popular all over the world
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C