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题库 / OG2017V-CR-172
Microbiologist: A lethal strain of salmonella recently showed up in a European country, causing an outbreak of illness that killed two people and infected twenty-seven others. Investigators blame the severity of the outbreak on the overuse of antibiotics, since the salmonella bacteria tested were shown to be drug-resistant. But this is unlikely because patients in the country where the outbreak occurred cannot obtain antibiotics to treat illness without a prescription, and the country's doctors prescribe antibiotics less readily than do doctors in any other European country.
Which of the following, if true, would most weaken the microbiologist's reasoning?
Physicians in the country where the outbreak occurred have become hesitant to prescribe antibiotics since they are frequently in short supply.
People in the country where the outbreak occurred often consume foods produced from animals that eat antibiotics-laden livestock feed.
Use of antibiotics in two countries that neighbor the country where the outbreak occurred has risen over the past decade.
Drug-resistant strains of salmonella have not been found in countries in which antibiotics are not generally available.
Salmonella has been shown to spread easily along the distribution chains of certain vegetables, such as raw tomatoes.
因果推理
因为抗生素只有处方药才能拿 所以不可能是滥用抗生素导致的outbreak 削弱结论
A 加强了结论，医生都不想开
B 削弱，人民平时进食就摄入了抗生素，自然支持滥用
C 其他国家无关
D 在没有抗生素的国家，S就没有抗药性。 这和推理文段无关。
E S怎么传播的块。无关
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