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考研
In the following article, some sentences have been removed. For Questions 41-45, choose the most suitable one from the list A-G
In the following article, some sentences have been removed. For Questions 41-45, choose the most suitable one from the list A-G
admin
2013-06-10
46
问题
In the following article, some sentences have been removed. For Questions 41-45, choose the most suitable one from the list A-G to fit into each of the numbered blanks. There are two extra choices, which do not fit in any of the blanks.
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. 41.______
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. 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.
42.______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. And manure contains especially high levels of bugs that are resistant to antibiotics, he says.
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. 43.______They could also be leaching into tap water pumped from rocks beneath fertilized fields.
Mueller is particularly concerned about a group of antibiotics called sulphonamides. 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. 44.______But vets are not treating the issue seriously.
There is growing concern at the extent to which drugs, including antibiotics, are polluting the environment. 45.______
[A] The drugs contaminate the crops, which are then eaten.
[B] This concentration is high enough to trigger the development of resistance among bacteria.
[C] Animal antibiotics is still an area to which insufficient attention has been paid.
[D] Most researchers assumed that humans become infected with the resistant strains by eating contaminated meat.
[E] There is no doubt that the food and drink is always important to the health.
[F] Many drugs given to humans are also excreted unchanged and are not broken down by conventional sewage treatment.
[G] His findings are particularly shocking because Switzerland is one of the few countries to have banned antibiotics as growth promoters in animal feed.
选项
答案
D
解析
注意后一句是说“但是动物排泄物中比肉制品中的残留抗生素更多”,从这个转折关系来判断,前一句应当是在说明和肉制品有关的内容,故D项合适。
转载请注明原文地址:https://kaotiyun.com/show/Uud4777K
0
考研英语一
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