2. 公务员
  3. Steven Stein likes to follow garbage trucks. His strange habit makes sense when you consider that he’s【B1】________environmental

Steven Stein likes to follow garbage trucks. His strange habit makes sense when you consider that he’s【B1】________environmental

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问题     Steven Stein likes to follow garbage trucks. His strange habit makes sense when you consider that he’s【B1】________environmental scientist who studies how to reduce litter, including things that fall off garbage trucks as they drive down the road. What is even【B2】________ (interest) is that one of Stein’s jobs is defending an industry behind the plastic shopping bags.
    Americans use more than 100 billion thin film plastic bags every year. So many end up in tree branches or along highways that a【B3】________ (grow) number of cities do not allow them at checkouts (收银台). The bags【B4】________ (prohibit) in some 90 cities in California, including Los Angeles. Eyeing these headwinds, plastic-bag makers are hiring scientists【B5】________Stein to make the case that their products are not as bad for the planet as most people assume.
    Among the bag【B6】________ (make) argument; many cities with bans still allow shoppers to purchase paper bags,【B7】________are easily recycled but require more energy to produce and transport. And while plastic bags may be ugly to look at, they represent a small percentage of all garbage on the ground today.
    The industry【B8】________ (take) aim at the product that has appeared as its replacement: reusable shopping bags. The stronger a【B9】________ (reuse) bag is, the longer its life and the more plastic-bag use it cancels out. However, longer-lasting reusable bags often require more energy to make. One study found that a cotton bag must be used at least 151 times to be better for the planet than plastic.
    Environmentalists don’t dispute (质疑) these points. They hope paper bags will be banned someday too【B10】________want shoppers to use the same reusable bags for years.
【B4】
选项
答案are prohibited
解析 考查被动语态。句意：包括洛杉矶在内，塑料袋在加州的90多个城市被禁止使用。因此结合时态，应为被动语态形式。故填入are prohibited。
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