如图所示，虚线a、b、c代表静电场中的三个等势面，它们的电势分别为φ_a、φ_b和φ_c、φ_a＞φ_b＞φ_c．一带电的粒子射入电场中，其运动轨迹如图中实线KLMN所示，由图可知（   ）

一By shaking hands．

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仅限一词

2）只允许修改10处，多者（从第11处起）不计分。

    Last weekend, our class went hiking. Early in the morning, we gathered at People's Square in the city center and then head for the South Mountain, which was 8 kilometers away. Our goal was to climbing to the top, from which we could enjoy a good view.

    It was an exhausted hike and the heats consumed all our energy. Therefore, when we finally reached to our destination, the view took our breath away. It was well worth walking such long distance. Because I not only got relaxed by enjoying the beauty of nature but also learned the truth which our efforts will always pay off in the end.

读右面某沿海地区一山地垂直自然带分布图，回答下列各题。