|
2017届吉林省双辽市高考英语一轮复习阅读理解训练9 阅读下列短文, 从给的四个选项 (A、B、C和D) 中, 选出最佳选项。 (2017·合肥市二模，B) Walking in a farmers' market often brings one to explore new food options, and now more locallyfarmed protein choices are available to help bridge the gap between our meals and the farms on which they originated. More and more local small farms are popping_up in opposition to factory farms. Today's commercial farms do not fit the image that comes to mind while happily singing along to “Old McDonald”. Instead, most of the nation's food comes from CAFOs, Confined Animal Feeding Operations, where animals are kept in tightly enclosed conditions as they are fattened up and readied to be killed for food. Fortunately, knowing exactly where one's food comes from has led to an increase in the availability of what is known as ?grassfed? beef. Technically, all cattle are grassfed for at least a limited amount of time, but what makes the meat significant is that it is grassfinished, not forcefed corn, soy or grains. This change in diet makes all the difference since corn is not part of the cow's traditional diet, and therefore causes major health issues for it. To deal with the health issues, antibiotics (抗生素) are used and some of the antibiotics used to treat the cattle are similar to those given to humans, so they can decrease the effectiveness of medicine when a consumer is sick. | 
