og12-99题

99. 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 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

此题感觉题目也看懂了“说放射可以杀菌但是也降低了营养，如维生素b1.支持者就说放射不比烹饪杀的B1多。
然而（转折了），这个要么是跑偏了，因为有的放射食物可以生吃，就是会有误导，XXXX.
为什么要选E呢。。我感觉题目中一点没说放射和烹饪组合的事情啊。为什么这个空要填两种方式一起去除更多B1。。感觉和题目有什么关系。。。完全无法联系起来。。求大神解释（为什么要提2个方式一起呢。。。）