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
OA是E，能否给解释一下
4. Despite the increasing number of women graduating from law school and passing bar examinations, the proportion of judges and partners at major law firms who are women have not risen to a comparable extent.
(A)the proportion of judges and partners at major law firms who are women have not risen to a comparable extent
(B)the proportion of women judges and partners at major law firms have not risen comparably
(C)the proportion of judges and partners at major law firms who are women has not risen comparably
(D)yet the proportion of women judges and partners at major law firms has not risen to a comparable extent
(E)yet the proportion of judges and partners at major law firms who are women has not risen comparably
OA是C，我有一点不明白 C当中的firms who are women，我老觉得 who are women修饰firms。这句话应该改成the proportion of judges and partners who are women at major law firms 吧？
补充一个题
At the annual stockholders meeting, investors heard a presentation on the numerous challenges facing the company, including among them the threat from a rival’s multibillion-dollar patent-infringement suit and the declining sales for the company’s powerful microprocessor chip.
A.including among them the threat from a rival’s multibillion-dollar patent-infringement suit and the declining sales for
B.which includes the threat of a rival’s multibillion-dollar patent-infringement suit and declining sales of
D.among them the threat of a rival’s multibillion-dollar patent-infringement suit and the decline in sales of
E.among these the threat from a rival’s multibillion-dollar patent-infringement suit as well as the decline in sales for
OA是D，可是我觉得E当中的them有指代不清的嫌疑，因为其前面有两个复数名次，既可以指investors又可以指challenges 。麻烦给解释一下？
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