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  3. Fields across Europe are contaminated with dangerous levels of the antibiotics given to farm animals. The drugs, which are in ma

Fields across Europe are contaminated with dangerous levels of the antibiotics given to farm animals. The drugs, which are in ma

admin2022-12-18  71
问题     Fields across Europe are contaminated with dangerous levels of the antibiotics given to farm animals. The drugs, which are in manure sprayed onto fields as fertilizers, could be getting into our food and water, helping to create a new generation of antibiotic-resistant "superbugs".
    The warning comes from a researcher in Switzerland who looked at levels of the drugs in farm slurry.【B1】_______________
    Some 20,000 tons antibiotics are used in the European Union and the US each year. More than half are given to farm-animals to prevent disease and promote growth.【B2】_______________
    Most researchers assumed that humans become infected with the resistant strains by eating contaminated meat. But far more of the drugs end up in manure than in meat products, says Stephen Mueller of the Swiss Federal Institute for Environmental Science and Technology in Dubendorf.【B3】______________
    With millions of tons animals manure spread onto fields of crops such as wheat and barley each year, this pathway seems an equally likely route for spreading resistance, he said. The drugs contaminate the crops, which are then eaten.【B4】_______________
    Mueller is particularly concerned about a group of antibiotics called sulphonamides.【B5】_____________This concentration is high enough to trigger the development of resistance among bacteria. But vets are not treating the issue seriously.
    There is growing concern at the extent to which drugs, including antibiotics, are polluting the environment. Many drugs given to humans are also excreted unchanged and broken down by conventional sewage treatment.
    A ) They do not easily degrade or dissolve in water. His analysis found that Swiss farm manure contains a high percentage of sulphonamides; each hectare of field could be contaminated with up to 1 kilogram of the drugs.
    B ) And manure contains especially high levels of bugs that are resistant to antibiotics, he says.
    C ) Animal antibiotics is still an area to which insufficient attention has been paid.
    D ) But recent research has found a direct link between the increased use of these farmyard drugs and the appearance of antibiotic-resistant bugs that infect people.
    E ) His findings are particularly shocking because Switzerland is one of the few countries to have banned antibiotics as growth promoters in animal feed.
    F ) They could also be leaching into tap water pumped from rocks beneath fertilized fields.
    G ) There is no doubt that the food and drink is always important to the health.
【B5】
选项
答案A
解析 本题可以组合使用复现结构定位法、总分结构法和代词指代关系定位法。第5题之前的本段首句明显是个判断性的总述句，直接概括出particularly(特别地)关注sul-phonamides，这就意味着第5题所在的本段落的主题就是围绕sulphonamides展开的，因此填入第5题的信息中一定要出现sulphonamides这个概念。寻找sulphonamides的复现结构，发现只有选项A)中出现了这个概念。从结构上看，选项A)的信息就是在详细描述sulphonamides的问题，并且出现了hisanalysis，这个代词对第5题之前的mueller可以形成恰当的指代关系，这样各种线索都证明了选项A)填入第5题的正确性。
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