The best title for this passage would be ______.

A．demand others to get everything absolutely right
B．know how to adjust their goals according to the circumstances
C．pay too much attention to details only to lose their major objectives
D．are capable of achieving perfect results in whatever they do

A．maintain direct eye contact
B．hide emotions with a deadpan expression
C．display excitement or disgust, shock or sadness
D．raise their eyebrows, nod and smile politely