GIS就是地理信息系统，具有地图处理、数据库和空间分析等功能。GIS可以像传统地图一样，解决“地点”、“状况”等有关查询，具有图形化、可视化等优点，并可以及时更新信息，与传统纸质地图相比，所表达的内容更加丰富、灵活。与传统纸质地图相比，并不是GIS明显优势的是（    ）。

课文基本上是____、____、____的逻辑思路展开的。 

增加：在缺词处加一个漏字符号（∧）,并在其下面写出该加的词。

删除：把多余的词用斜线（＼）划掉。

修改：在错的词下划一横线,并在该词下面写出修改后的词。

注意：1）每处错误及其修改均限一词;

2）只允许修改10处,多者（从第11处起）不计分。

    I will share one experience with you. With the College Entrance Examination draw near, I was filled with great anxiety. However, I couldn't be absorbed in study, resulting my failing in the examination. I got very discouraging. Just then, my teacher, Miss Zhang, approach me and said, "In life we all have moment when we can't achieve what we want it. It is natural. Don't allow those moments to weak you, but turn them into motivation to inspire you." Her words were a reminder which provided myself with constant encouragement to smile at life. Consequently, I gained what I deserved.

    So it is an optimistic attitude which matters most of all. It gives you the confidence to deal with difficulties and to achieve what you want in your life.

如图所示，在升降机内固定一光滑的斜面体，一轻弹簧的一端连在位于斜面体上方的固定木板B上，另一端与质量为m的物块A相连，弹簧与斜面平行．整个系统由静止开始加速上升高度h的过程中（   ）