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1.       The commission has directed advertisers to restrict the use of the word “natural” to foods that do not contain color or flavor additives, chemical preservatives, or nothing that has been synthesized.

(A) or nothing that has been

(B) or that has been

(C) and nothing that is

(D) or anything that has been（D）

(E) and anything

   我觉得d更好。属于n，n，and n.这种结构。

啊？你是说C吧，答案本来就是D啊

这个题有个not，否定意思。所以不用and而改用or。作用一样，都是并列

个人意见