60. Since the routine use of antibiotics can give rise to resistant bacteria capable of surviving antibiotic environments, the presence of resistant bacteria in people could be due to the human use of prescription antibiotics. Some scientists, however, believe that most resistant bacteria in people derive from human consumption of bacterially infected meat.
Which of the following statements, if true, would most significantly strengthen the hypothesis of the scientists?
A. Antibiotics are routinely included in livestock feed so that livestock producers can increase the rate of growth of their animals.
B. Most people who develop food poisoning from bacterially infected meat are treated with prescription antibiotics.
C. The incidence of resistant bacteria in people has trended to be much higher in urban areas than in rural areas where meat is of comparable quality.
D. People who have never taken prescription antibiotics are those least likely to develop resistant bacteria.
E. Livestock producer claim that resistant bacteria in animals cannot be transmitted to people through infected meat.
答案:A
題目說由於長期固定使用抗生素可以增加抵抗細菌的環境, 所以如果細菌抵抗存在於人體那應該是因為人類使用抗生素配方, 但是有些科學家相信大部分人體的細菌抵抗是來自於吃了有細菌感染的肉, 要strengthen科學家的假設
答案A說抗生素一直固定存在於家畜的飼料裡以至於家畜的生產者可以提高他們度的生長率
不懂答案如何strengthen, 請大大們解答
