Which of the following most logically completes the argument?
The irradiation of food kills bacteria and thus retards spoilage. However, it also lowers the nutritional value of many foods. For example, irradiation destroys a significant percentage of whatever vitamin B1 a food may contain.  roponents of irradiation point out that irradiation is no worse in this respect than cooking. However, this fact is either beside the point, since much irradiated food is eaten raw, or else misleading, since _______.
C. cooking is usually the final step in preparing food for consumption, whereas irradiation serves to ensure a longer shelf life for perishable foods
D. for food that is both irradiated and cooked, the reduction of vitamin B1 associated with either process individually is compounded
偶也选E。
本文作者的观点是食物辐射会降低许多食物的营养价值。
而支持食物辐射的人反驳:就降低维他命B1来讲,辐射并不比煮食物更糟糕。
作者又说,这个实事是离题的:
因为很多食物并不需要煮来吃。(意思是一种情况根本不会发生,所以没有可比性)。
作者继续说,或者这个实事是误导的:
c: 煮食物通常是食物吃之前的最后一步加工过程(暗含的意思是不可避免的一步),
而辐射只是为了更长的保存食物。(暗含的意思是可以省略的一步,那么跟上面离题的说法是不是一样?两种情况并不是一定要发生的,所以没有可比性。-跑题?)
e. 同时辐射和煮食物,使流失的B1加倍。(指出即使辐射并不比煮食物使B1流失更厉害,但是有了它会加重流失。简化之,A不比B糟,不代表说A就应该使用。)
请NN指正。谢谢!
[此贴子已经被作者于2004-6-28 13:05:20编辑过] |