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    Every time you go to the supermarket, you come away with your purchases in plastic bags. But wouldn’t it be kinder to the environment if you asked for paper bags instead?
    The answer is not the easy as it might seem. Environmentalists say there are drawbacks to using both plastic bags and paper bags.
    According to the American Plastics Council 80 percent of groceries in the US are packed in plastic bags.
    “The numbers are becoming huge,” said Vincent Cobb, a businessman from Chicago who set up “reusable bags. com” on the Internet. He notes that consumers use between 500 billion and 1 trillion plastic bags per year worldwide.
    Some experts believe that all these bags harm the environment. Plastic takes hundreds of years to break down and, as it does so, poisonous materials are released into the water and soil.
    Further damage is caused if plastic bags enter the sea. For example, endangered sea turtles cannot tell the bags from jellyfish(水母), their main source of food, and often choke on them.
    Floating plastic bags have been spotted as far north as the Arctic Ocean and as far south as the southern end of South America. One expert predicts that, within ten years, plastic bags will wash up in Antarctica!
    However, this kind of bag does have its advantages.
    “Plastic grocery bags are some of the most reused things around the house,” explained Laurie Kusek of the American Plastics Council.
    According to the Film and Bag Federation, a trade group in the US plastics industry, paper bags use more energy and create more waste than plastic bags. Plastic bags require 40 per cent less energy to produce and cause 70 per cent less air pollution, the group explained. They also release as much as 94 percent less waste into the water than paper ones.
    But paper bags do break down more quickly than plastic bags. They don’t endanger wildlife, either.
    So what should we do? One possible solution would be to use biodegradable(能被生物分解的)plastic bags. But until biodegradable technology improves, it might be easier to pack things you buy in reusable cloth bags.
    小题1:The best title of the passage is _____.
    A．Paper Causes Less Pollution
    B．Plastic Causes Less Pollution
    C．Paper and Plastics Cause Pollution
    D．Paper Bags Break Down More Quickly
    小题2:The underlined word “drawbacks” might mean “_____”.
    A．AdvantagesB．disadvantagesC．air pollutionD．waste
    小题3:According to the passage, which of the following in NOT true?
    A．Plastic takes longer to break down than paper.
    B．Sea turtles usually mistake the plastic bags for jellyfish.
    C．Paper bags require less energy than plastic bags.
    D．You’d better pack things in reusable cloth bags.
    小题4:Which of the following shows that paper bags are better than plastic ones?
    A．Paper bags take less time to rot.
    B．Paper bags cause less air pollution.
    C．Paper bags are more reusable.
    D．Paper bags cause less water pollution.

    小题1:C
    小题2:B
    小题3:C
    小题4:A

    试题分析：这是一篇讨论该用塑料袋还是纸袋的文章，它们各自都有优点，但是对环境也都会造成破坏。
    小题1:主旨题：从第二段的句子：The answer is not the easy as it might seem. Environmentalists say there are drawbacks to using both plastic bags and paper bags.可知塑料袋和纸袋都污染环境，选 C
    小题2:猜词题：从倒数第五段的句子：However, this kind of bag does have its advantages.可知后面讲的是这两种袋的优点，那么前面应该是这两种的缺点。选B
    小题3:推理题：从倒数第四段的句子：“Plastic grocery bags are some of the most reused things around the house,” explained Laurie Kusek of the American Plastics Council.可知塑料袋大多数是回收的材料，需要的能源比纸袋少，还有倒数第三段的句子：paper bags use more energy and create more waste than plastic bags. 都表明C表达错误。
    小题4:细节题：从倒数第二段的句子：But paper bags do break down more quickly than plastic bags. They don’t endanger wildlife, either.可知纸袋腐烂的速度比塑料袋快，选A
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