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2016年职称英语理工类C级全真模拟题:补全短文

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  第5 部分:补全短文 (第46-50题,每题2分,共10分}

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  Dung to Death

  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 n e w generation of antibiotic-resistant “superbugs”.

  The warning comes from a researcher in Switzerland w h o looked at levels of the drugs in farm slurry. 46 .

  S o m e 20,000 tons of antibiotics are used in the European Union and the U S each year. Mor e than half are given to farm-animals to prevent disease and promote growth. 47 .

  Most researchers assumed that humans b ecome 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. 48 .

  With millions of tons of 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. 49.

  Mueller is particularly concerned about a group of antibiotics called sulphonamides. 50 . 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. This concentration is high enough to trigger the development of resistance a m o n g 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.M a n y drugs given to humans are also excreted unchanged and are not broken d o w n by conventional sewage treatment.


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