好的！这个故事使用人教版六年级下册常见的单词编写，控制在200字以内，情节简单有趣。

Story: The Old Map (约180字)

One boring afternoon, Tom felt bored sitting at home. He decided to go to the library. He looked for something fun to read.

On a high shelf, Tom found an old, dusty book about space. When he opened it carefully, a small, yellow piece of paper fell out. It looked like a map! The map showed a path from the library to a big tree near the river.

Tom felt excited. He followed the map. It led him through the park and across a small bridge. Finally, he arrived at the ancient tree with thick roots. He dug carefully under its branches.

He found a small metal box! Inside was a note. It said: "The real treasure is friendship. Share your secret with a good friend!" Tom smiled. He knew exactly who to tell. He quickly ran home to call his best friend, Mike.

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中文翻译 (方便理解):

故事：旧地图

一个无聊的下午，汤姆坐在家里感到无聊。他决定去图书馆。他寻找一些有趣的书来读。

在一个高高的架子上，汤姆发现了一本关于太空的老旧、布满灰尘的书。当他小心地打开它时，一张小小的、发黄的纸片掉了出来。它看起来像一张地图！地图显示了一条从图书馆通往河边一棵大树的小路。

汤姆感到兴奋。他跟着地图走。它领着他穿过公园，越过一座小桥。终于，他到达了那棵有着粗壮树根的古老大树下。他在树枝下小心地挖着。

他发现了一个小小的金属盒子！里面有一张纸条。上面写着：“真正的宝藏是友谊。和你的好朋友分享你的秘密吧！”汤姆笑了。他知道该告诉谁。他飞快地跑回家去打电话给他的最好的朋友，迈克。

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重点使用的六年级下册单词:

* Nouns (名词): library, space, shelf, piece, map, path, tree, river, park, bridge, roots, branches, metal box, note, treasure, friendship, secret, friend, best friend
* Verbs (动词): felt, decided, looked, opened, fell, showed, led, arrived, dug, found, said, smiled, knew, ran, call
* Adjectives (形容词): bored, fun, old, dusty, excited, small, yellow, big, ancient, thick, good, real
* Adverbs (副词): carefully, exactly, quickly
* Prepositions (介词): on, at, out, like, from, near, through, across, under, inside
* Others: one, something, about, a, the, it, this, and, with, was, to (不定式), finally, he, his

希望这个简单有趣的故事适合！