Do you have such kind of experience? In a bus you may look at a stranger, but not too long. And if he senses that he 56 (stare) at, he may feel uncomfortable.
The same happens in daily life. If you are looked at for more than necessary, you will look at yourself up and down, to see 57 anything is wrong with you. If nothing goes wrong, you will feel uncomfortable. Eyes do speak, right?
58 (look) too long at someone may seem to be rude. But things are different when 59 comes to a stare at the opposite sex. If a man 60 (glance) at a woman for more than 10 seconds, that means he wishes to make her know he is admiring her. Normally, the speaker in conversation will look at the listener at times to make sure that the listener does pay attention to 61 the former is saying. A poor liar usually makes himself 62 (expose) by looking too long at the victim, since he believes in the false idea that to look straight in the eye is a sign of honest 63 (communicate). Actually, continuous eye contact exists in lovers only, who will enjoy looking at each other gently for a long time to show love that words cannot convey.
64 (evident), eye contact should be done according to the specific situation and the relationship 65 two people.