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
归根揭底,导致食物VITMIN B1 的流失有两种可能,一种是COOKING ,另一种是IRRADIATION. 在最后一句话中, However, this fact is either beside the point, since much irradiated food is eaten raw, or else misleading, since _______. 前半段的point是指在破坏食物VITAMIN B1的层面上来讲,cook过的时候和irradiated过的食物其实是差不多的,然后接着那个since是用来解释这个现象的,这一段非常的清除。 后半段用了个Misleading,说实话我一开始非常不了解放个misleading在这里干什么,可是大家应该想想什么样子的情况会让我们觉得mislead呢? 读了E才知道,原来当食物即被cook,又被irradiate过的时候,他们对于事物VITAMIN B1的破坏效果就不那么清楚了。 因为我们很难测量具体被破坏的vitamin b1中,到底有多少是因为被cook过而丢失得,有多少是被irradiate过而丢失。 所以E是最恰当的选项。 c选项只不过是把一种现象说了出来,并不能使我们感到一种MISLEADING的感觉。所以C不对。 |