D错哪了？

D错哪啦？ 本题答案B。

One legacy of Madison Avenue's recent campaign to appeal to people fifty years old and over is the realization that as a person ages. their concerns change as well.

(A)  the realization that as a person ages, their

(B)   the realization that as people age, their

(C)  to realize that when a person ages, his or her

(D)  to realize that when people age, their

(E)   realizing that as people age, their

听xdf说的，be to do的结构不够优，有主观性。另外是不是有逻辑上的问题？

别太在意XDF说的优先顺序，有些是错的

这里是因为when强调时点，as强调过程

呵呵,这是一个sth is sth的句型...legacy是名词，自然后面只能用the relization而不是to realize或者realzing..这样rule out BCD,

然后agreement就可以rule out A了

谢谢大家！