gwd-5-29 急！

Over the past five years, the price gap between name-brand cereals and less expensive store-brand cereals has become so wide that consumers have been switching increasingly to store brands despite the name brands’ reputation for better quality.  To attract these consumers back, several manufacturers of name-brand cereals plan to narrow the price gap between their cereals and store brands to less than what it was five years ago.

Which of the following, if true, most seriously calls into question the likelihood that the manufacturers’ plan will succeed in attracting back a large percentage of consumers who have switched to store brands?

There is no significant difference among manufacturers of name-brand cereals in the prices they charge for their products.

Consumers who have switched to store-brand cereals have generally been satisfied with the quality of those cereals.

Many consumers would never think of switching to store-brand cereals because they believe the name brand cereals to be of better quality.

Because of lower advertising costs, stores are able to offer their own brands of cereals at significantly lower prices than those charged for name-brand cereals.

Total annual sales of cereals—including both name-brand and store-brand cereals—have not increased significantly over the past five years.

答案选b，他说要降价，和质量有什么关系啊？   

ETS出的题就是这样，不求最好，但求迷惑人。只能比较中选较合适的。

题目让weaken降价是否能吸引原来的顾客 attract these consumers back，这些顾客是have been switching increasingly to store brands from name-brand cereals , B 说他们满意store brands 的质量，就是说即使两者间价格差变小，他们也不见得就会回头买name-brand cereals

我觉得b不对，我选d。

b说的是质量，但之前文章说name-brand比store-brand质量好，但还是因为store-brand的价格很低，客户转向store-brand。

d说store-brand会比name-brand还便宜。直接weaken了arguement（name-brand降价导致客户转向name-brand）的前提，那就是价格因素。