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Read the following article and select the best answer. 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: Which of the following was probably the first kind of trees being engineered? - Papaya. - Pine. - Apple. - Poplar.
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Papaya.

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Read the following article and select the best answer. 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: When in Barcelona last year, Irving Tajfel probably _ . - wore a pair of Doc Martens - found Doc Martens was put on show - placed an order for Doc Martens - saw fashion kids wearing Doc Martens
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found Doc Martens was put on show

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Read the following article and select the best answer. Article: I am wearing a small red ribbon this morning to remind myself and others around me that today is World AIDS Day. The red ribbon, an international symbol of AIDS awareness, is gaining increasing public recognition as more Chinese, from top leaders to movie stars, wear it today. Gone were the days when the topic of HIV/AIDS was a public and media taboo . Over the past few years, we have watched, read and heard many stories from doctors, volunteers and public health officials at the forefront of HIV/AIDS prevention and treatment. Quite a few people with HIV/AIDS have come forward to share their experiences on TV or in the media. The local and central governments have become more forthcoming (be helpful) with their new prevention and treatment programmes, and financial input. The _ rose from less than 1 million yuan (US$ 121,000) in 1986 to a pledge of 800 million yuan (US$98.8 million) in the year of 2006. The change from silence to public and media campaigns with official promises has been remarkable, especially since China battled through the SARS crisis. But have we got a full understanding on HIV/AIDS? What do we know about the extent of HIV/AIDS in China? The figures, ranging from confirmed cases to estimates, remain debated. After all, no more than a year has passed since the policy of free medical tests was make public. Unknown numbers from the high-risk groups drug addicts and people working in sex- related place as well as farmers who once sold blood could still be reluctant to come forward. Question: What does the red ribbon stand for? - AIDS awareness - World AIDS Day - AIDS - AIDS prevention and treatment
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AIDS awareness