2. 外语
  3. [A]excessively[I]degradation [B]collectively[J]neutralize [C]positive[K]pervasive [D]automate[L]additive [E]adop

[A]excessively[I]degradation [B]collectively[J]neutralize [C]positive[K]pervasive [D]automate[L]additive [E]adop

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问题     [A]excessively[I]degradation
    [B]collectively[J]neutralize
    [C]positive[K]pervasive
    [D]automate[L]additive
    [E]adoption[M]baffle
    [F]embed[N]bind
    [G]respective[O]available
    [H]pollutants
    What if clothing was more than just an accessory? The green movement is not new to fashion, and many designers and manufacturers have been actively seeking out ways to ensure their garments have less of an environmental impact. But what if your clothes were actually able to have a【C1】______impact on the environment?
    This vision is one shared by the two founders of Catalytic Clothing(触媒服装): Professor Tony Ryan, a scientist from the University of Sheffield, and Professor Helen Storey, a designer and artist from the London College of Fashion. Together they are working on a project that draws on the growing field of nanotechnology(纳米技术)to create a fabric【C2】______that can break down pollutants in the air.
    "In a sense, it’s a recycling of an existing technology that exists in toothpaste and sunscreen," Professor Storey explains. The additive contains nanoparticles of titanium dioxide which act as a catalyst(触媒剂;催化剂). When light hits these particles, they react with oxygen to make what is essentially a peroxide(过氧化物)bleach. This in turn reacts with air【C3】______such as nitric oxide and breaks them down.
    While this technology could be used to create an entirely new fabric, Professor Ryan thinks that it has greater potential as an additive. " It only needs to be on the surface," he says. " You don’t【C4】______it in the fibers, and that means that it’s really easy to upgrade existing fabrics with the technology. We think the best way to do this is via the laundry, because everyone washes their clothes. "
    Jeans have been a particular focus of Catalytic Clothing, both because they are widely prevalent as well as that the particles【C5】______especially well to cotton denim. And while the amount of air pollutants broken down by any one individual wearing catalyzed jeans is minor, "【C6】______, we can have a huge impact on the quality of the air and therefore respiratory health," Storey says. According to Ryan, 4 people wearing catalyzed jeans in a day would【C7】______the nitric oxide air pollution created by one car.
    The future might be one in which this pollution-busting fabric additive is so【C8】______that we no longer give it a second thought, like fluoride(氟化物)in tap water. Though at the moment it’s not commercially【C9】______, Ryan estimates that it could be within a year or less. Catalytic Clothing is aiming for mass【C10】______. The day is near when we’ll be able to make our clothes work for us in more ways than one.
【C9】
选项
答案O
解析 根据句子结构可知，该空缺少一个形容词。根据上下文可知，目前该产品还处在研究阶段，还没有被大众消费者接受，也就是还没有进行商业销售，故[O]available“可获得的，可用的”符合句意，为答案。
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