根据对话，判断老年人的优势有哪些？


A.
You.re glad to be part of the life.


B.
It.s a little inconvenient.


C.
You understand the changes around you.


D.
Now it.s hard to be as quick as you used to be


E.
You understand where you have been.


F.
You can.t do what you used to.

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