弱弱地请教两道新东方白皮书上最后118题中的第46题和55题。 46.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. 此题选择E,有哪位好心人能够给我解释下为何选择E呢? 55.An overwhelming proportion of the most productive employees at SaleCo's regional offices work not eight hours a day,five days a week, as do other SaleCo employees, but rather ten hours a day, four days a week, with Friday off.Noting this phenomenon, SaleCo's president plans to increase overall productivity by keeping the offices closed on Fridays and having all employees work the same schedule----ten hours a day, four days a week. Which of the following, if true, provides the most reason to doubt that the president's plan, if implemented,will achieve its stated purpose? (A).Typically, a SaleCo employee's least productive hours in the worlkplace are the early afternoon hours. (B).None of the employees who work four days a week had volunteered to work that schedule, but all were assigned to it by their supervisors. (C).Working ten hours a day has allowed the most productive employees to work two hours alone each day in their respective offices relatively undisturbed by fellow employees. (D).Employees at SaleCo are compensated not on the basis of how many hours a week they work but on the basis of how productive they are during the hours they are at work. (E).Those SlaeCo employees who have a four-day workweek do not take any of their office work to do at home on Fridays. 此题选择C,请高人解释下为何。感激不尽。 |