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.
21. 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
(E) and anything
正确答案是D,但是这里为什么要用has been? 如果用 or anything that is synthesized 可以吗?