[求助]GWD10-12

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.  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 food’s 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 B1 than carefully controlled irradiation is
E for food that is both irradiated and cooked, the reduction of vitamin B1 associated with either process individually is compounded
   Answer: E  看了NN的分析，觉得E很有道理，因为作者列举了irridiation的支持者没有考虑到的情况，但是我对C项是一头雾水，我知道这个可能不对，但是我实在没法排除C，因为C也说了cooking和irridiation的不同。请高手帮帮忙，谢谢

这题不建议您继续钻牛角尖了

这是道到现在依然争议不断的题目。

forget it

还有一个题

Mayor:  Migrating shorebirds stop at our beach just to feed on horseshoe-crab eggs, a phenomenon that attracts tourists.  To bring more tourists, the town council plans to undertake a beach reclamation project to double the area available to crabs for nesting.

Birdwatcher:  Without a high density of crabs on a beach, migrating shorebirds will go hungry because shorebirds only eat eggs that a crab happens to uncover when it is digging its own nest.

Which of the following, if true, would provide the mayor with the strongest counter to the birdwatcher’s objection?

A Every year a certain percentage of crabs are caught by fishermen as bait for eel traps.
B Horseshoe crabs are so prolific that given favorable circumstances their numbers increase rapidly.
C On average, tourists who come to the town in order to watch birds spend more money there than tourists who come for other purposes.
D The additional land made available by the reclamation project will give migrating shorebirds more space.
E Some of the migrating shorebirds make only one stop during their migration form South America to Canada.
   Answer: B 来谈谈我的理解，反对者说没有high density，就不能使鸟吃道充足的uncovered的egg，从而挨饿，用B反对就是crab如此高产，只要是favorable的条件，他就能繁殖的很多，也就是足够鸟吃的，但我有一个疑问，就是文中并没有肯定是扩大土地fovorable，还是high density favorable，请达人指点一下，谢谢

市长：认为只要地方大，来看候鸟吃马蹄蟹蛋的人就多了

鸟类观察者认为：马蹄蟹的密度如果低了，候鸟吃不饱

B说只要土地的环境好，马蹄蟹的数量会变大的，填补由于土地变大而造成的马蹄蟹的密度降低。

鸟类观察者从单纯的土地扩大造成的密度降低来提出问题

B的反驳说土地扩大本身不是问题，只要土地的条件够好，就能使得马蹄蟹的数量变大。这个条件是一个他因反驳了鸟类观察者的看法，因此可以不在文中出现。文中不需要肯定，土地是否favorable。土地favorable了马蹄蟹就能high density