A:(2k−14,2k+14),k∈z
B:(2k+12,2k+52),k∈z
C:(4k−14,4k+14),k∈z
D:(4k+14,4k+154),k∈z
A: I'm thirsty and ____. I want some ____.
B: OK.
求证:∠CAB=∠AED.