题干

GIS即地理信息系统,具有地图处理、数据库和空间分析等功能。GIS可以像传统纸质地图一样,解决“地点”、“状况”等有关查询问题,但GIS还能进行趋势分析,复杂的“模式”分析,还可以用“虚拟模拟”进行预测性分析。下面属于地理信息系统组成的是(    )。

①GIS软件 ②GIS人员 ③地理数据 ④GIS数据分析 ⑤GIS数据输出

A:①②③

B:②③④

C:③④⑤

D:①②⑤

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A

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    Much meaning can be conveyed, clearly, with our eyes, so it is often said that eyes can speak.

    Do you have such 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 in daily life. If you are looked at for more than necessary, you will look at yourself up and down, to see if there is anything wrong with you. If nothing goes wrong, you will feel angry toward others' stare 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 stare at the opposite sex. If a man glances at a woman for more than 10 seconds and refuses to move 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 speaking, to tell him that he is attentive.

    If a speaker looks at you continuously when speaking, as if he tries to dominate you, you will feel uncomfortable. A poor liar usually exposes himself 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 communication. Quite the contrary.

    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 cannot express.

    Evidently, eye contact should be done according to the relationship between two people and the specific situation.