请教大全301题hidden amounts

以下是引用gemj在2003-11-6 17:29:00的发言：
301. Following the nutrition board’s advice on salt consumption would mean a virtual end of the use of salt in cooking, an avoidance of obviously salty foods, and reducing the reliance on processed foods that contain significant amounts of often hidden sodium.
(A) reducing the reliance on processed foods that contain significant amounts of often hidden sodium
(B) reducing the reliance on processed foods containing often hidden but significant amounts of sodium
(C) a reduction of the reliance on processed foods, containing as they do often hidden sodium in significant amounts
(D) a reduced reliance on the significant amounts of hidden sodium often contained in processed foods
(E) a reduced reliance on processed foods that contain significant but often hidden amounts of sodium
答案E，同意。
但E中significant but often hidden显然都是在修饰amounts，但问题是amounts怎么能被hidden呢？ETS是不是晕了头？
如果说sodium被hidden还勉强能说得过去。

以下是引用mjiehu在2003-11-7 7:08:00的发言：

amounts怎么不能被hidden呢？
significant and hidden amounts of salt

the amount of salt is significant ( great amount of salt), but it is hidden (one cannot see the salt, because it is in the processed food)