OG上的逻辑题求教

melody远行

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 Bl 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
(A) many of the proponents of irradiation are food distributors who gain from foods' having a longer shelf life
(B) it is clear that killing bacteria that may be present on food is not the only effect that irradiation has
(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) certain kinds of cooking are, in fact, even more destructive of vitamin Bl than carefully controlled
irradiation is
(E) for food that is both irradiated and cooked, the reduction of vitamin Bl associated with either process
individually is compounded
虽然OG上有详细解答，可是还是没太理解，有同学能帮忙解解惑吗？

melody远行

有同学能教教吗？

dittoshining

就是E选项是说，被破坏的是辐射和cooking之和，你不能说cooking比辐射多。
作者是要attack cooking也破坏。D选项呢，是说COOKING不好，比辐射更破坏。D 就是WEAKEN了。
C 的 比较是二者的目的，不能利于ATTTACK cooking。
B 接在or else后逻辑不对，其实这个选项本身就有问题，因为杀菌无关。