gwd-5-30也是gwd-11-12 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 _______.
- many of the proponents of irradiation are food distributors who gain from food’s having a longer shelf life
- it is clear that killing bacteria that may be present on food is not the only effect that irradiation has
- cooking is usually the final step in preparing food for consumption, whereas irradiation serves to ensure a longer shelf life for perishable foods
- certain kinds of cooking are, in fact, even more destructive of vitamin B1 than carefully controlled irradiation is
- for food that is both irradiated and cooked, the reduction of vitamin B1 associated with either process individually is compounded
以下是引用ethyl在2005-8-28 21:26:00的发言:
这个题历来争议颇多,不过我一直主张选C,很明显说irradiation跟cooking一样不好的人是把这两个当成可比的东西,其实这两者不具可比性,因为如C所说。
晕了,今早做题又觉得应该选E了,总结的时候仔细又看了所有前人的讨论帖,自己又想了一下,觉得还是选E。理由如下:
原文中的逻辑关系是这样的:irradiation的支持者提出,在破坏营养方面,irradiation与cooking的效果其实是一样的。(根据这个论述他们支持人们使用irradiation).但其实这个论述是不对的,一方面beside the point,另一方面这个论述误导了人们,(使得人们认为使用irradiation 不会对营养造成更多的破坏 )。为什么说它误导呢,因为对那些不生吃的食物来说,cooking 是一定的,如果人们认为irradiation不会对营养造成更多的破坏,那人们就会在cooking 之前进行irradiation,但实际上irradiation 之后的食物再cooking 的话,对营养造成的破坏是compound的(我暂且理解为是成倍增加的)。所以这个论述误导了人们,使人们赞同irradiation.而C并没有形成misleading。
open to discussion |