参考答案：

As is vividly depicted in the drawing above^[A]. a man is standing on the edge of a cliff. with a large black sign pointing to the opposite direction behind him^[B]. The title above the picture reads "Direction" in Chinese characters.

Apparently, the cartoon aims to make us realize^[C] the great importance of choosing the right direction when we try to pursue what we expect. Spending one’s life time is just like climbing a mysterious mountain. ^[D]Once we set up in a right direction, and persevere in climbing, we shall get where we intended to go. On the other hand, a wrong direction will lead us to the opposite result and get confused all the way up^[E]. When facing tough situations, ^[F]we may be easily defeated. What is worse, all the painstaking efforts we’ve made will be in vain.

Kaifu Lee, the former vice president of Microsoft and Google, would be a positive example in case^[G]. Lee’s initial major was law in the university. However, when he found himself more enthusiastic about computer technology, he changed his goal and strived to achieve great results in computer studies. The right direction guided Lee to realize his dream, thus setting us all a positive example.

It is safe to conclude that^[H] a right direction in our life is like a lighthouse when we’re sailing on a dark sea^[I]. It is therefore highly sensible^[A0] that we find the right direction and then stick to it.

解析：

大作文部分沿袭了图画作文的命题模式。题目中提供了一幅图片，图中，一个人背着背包站在悬崖边，而他身后有一个指向相反方向的路标，图画上方是图画的标题：方向。由图片中的悬崖、路标，以及标题“方向”我们可以联想到，“悬崖”意味着险境，路标指示着正确的方向，如果不按照路标所指的方向走，很可能会坠入悬崖。由此可知，作者意在告诉我们，在人生旅途中，选对方向、找准目标很重要。

正确的目标就像是夜航时的灯塔，不管航行的道路上会遇到多少艰难险阻，它都能指引我们朝着正确的方向前进，并最终到达目的地。而错误的方向，却会让人时时感到迷茫，很容易被困难打败。

通过以上分析，我们可以大致形成本文的行文脉络：

第一段：描述图画。

第二段：解读图画寓意，从正反两方面证明找准方向的重要性。

第三段：举例说明。

第四段：总结全文，简明地提出建议。

[1] 描述图画内容的经典表达法，类似的表达方式还有As is vividly described/illustrated/showed in the drawing/picture/illustration...。

[2] with+名词结构+现在分词，作伴随状语，使句式变换多样，体现表达技巧。

[3] 揭示图画意图的经典表达，多用于表现某种精神或者某一观点的重要性。

[4] 此处作者使用了比喻的修辞手法，将人的生命历程比作攀登高峰，形象而贴切，体现出文学性。

[5] all the way up在此处为状语，与前面攀登高峰的比喻紧密相连，体现出暗喻，为文章增色不少。

[6] 动词的现在分词作状语，减少短句的出现，丰富了文章的句式结构，使行文更加流畅。

[7] an example in case意为“这样的例子”，是举例说明时的经典表达。

[8] 得出结论的经典表达，使文章结尾自然而富有深意。

[9] 比喻用法，将正确方向的作用比作黑暗海面上的灯塔，使文章内容更加丰富，表达也更加形象。

[10] It is+adj.+that句型，在文章结尾提出了简单的建议，充实了文章内容。