GWD7 填空题，大牛进~

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.  Proponents 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 _______.

1. many of the proponents of irradiation are food distributors who gain from food’s having a longer shelf life

2. it is clear that killing bacteria that may be present on food is not the only effect that irradiation has

3. cooking is usually the final step in preparing food for consumption, whereas irradiation serves to ensure a longer shelf life for perishable foods

4. certain kinds of cooking are, in fact, even more destructive of vitamin B1 than carefully controlled irradiation is

5. for food that is both irradiated and cooked, the reduction of vitamin B1 associated with either process individually is compounded

偶选了A，但是答案是E，好像风马牛不相及啊。

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 for food that is both irradiated and cooked, the reduction of vitamin B1 associated with either process individually is compounded.

E选项这么理解吧。

前面说辐射杀菌不会比煮食更坏（不会比煮食损失更多的营养）。后一句是结论：这个事实可能是对的，因为大多辐射杀菌食物是生吃的；但也可能会造成误导，因为如果食物既进行了辐射杀菌又进行了煮食，两个过程各自对维生素造成的损失会叠加起来。

1. many of the proponents of irradiation are food distributors who gain from food’s having a longer shelf life

2. it is clear that killing bacteria that may be present on food is not the only effect that irradiation has

3. cooking is usually the final step in preparing food for consumption, whereas irradiation serves to ensure a longer shelf life for perishable foods

4. certain kinds of cooking are, in fact, even more destructive of vitamin B1 than carefully controlled irradiation is

5. for food that is both irradiated and cooked, the reduction of vitamin B1 associated with either process individually is compounded

A里面的MANY不好，原文没有ALL的说法，难以产生关系

B里面的ONLY不好，太绝对

C不清楚

D,E好歹都有B1

考场上蒙一个吧

倡导者指出irradiation 并不会比cooking所造成的破坏更差。然而，作者认为这个观点要么是离题的，因为很多irradiated 的食品是生吃的，或者是有误导作用的，因为，。。。。

这样我理解了，我没有看到题目里irradiated food is eaten raw，因为是说已经irradiated 的食品是生吃的（只受irradiation 一种破坏），那么相对另一种情况就是既irradiated 又cooked，所以选E。相对来说E更符合逻辑。