【单选题】Whether the eyes are the windows of the soul is debatable, that they are intensely important in interpersonal communication is a fact. During the first two months of a baby's life, the stimulus that p...
A.
of extreme importance in expressing feelings and exchanging ideas
B.
something through which one can see a person's inner world
C.
of considerable significance in making conversations interesting
D.
something the value of which is largely a matter of long debate