阅读下面短文，并根据短文后的要求答题(请注意问题后的字数要求)。
(2013青岛期末)
Much meaning can be conveyed，clearly with our eyes，so it is often said that eyes can speak. Do you have such a kind of experience? In a bus you may look at a stranger, but not too long. And if he is sensing that he is being stared at, he may feel uncomfortable.
The same thing happens in daily life. If you are looked at for more than necessary，you may look at yourself up and down, to see if there is ______ . If nothing goes wrong, you will feel angry towards others' staring at you that way. Eyes do speak, right?
Looking too long at someone may seem to be rude and aggressive. But things are different when it comes to staring at the opposite sex. If a man glances at a woman for more than 10 seconds and refuses to avert his gaze，his intentions are obvious，that is，he wishes to attract her attention, to make her understand that he is admiring her.
However, the normal eye contact for two people engaged in conversation is that the speaker will only look at the listener from time to time, in order to make sure that the listener does pay attention to what the former is saying.
If a speaker looks at you continuously when speaking，as if he tries to dominate you, you will feel disconcerted. A poor liar usually exposes himself by looking too long in the communication.
In fact，continuous eye contact is confined to lovers only, who will enjoy looking at each other tenderly for a long time，to show affection that words can't express.
Evidently, eye contact should be done according to the relationship between two people and the specific situation.
What is the best title of the passage? (no more than 6 words)
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Please fill in the blank in Paragraph 2 with proper words or phrase to complete the sentence. (no more than 10 words)
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Which sentence in the passage can be replaced by the following one?
It may be bad manners to stare at someone.
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What will you do if your classmates listen to your speaking, according to the passage? (no more than 30 words)
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Translate the underlined sentence into Chinese.
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