Once I read a book, it tells me a story about a greedy monkey.

Once I read a book, it tells me a story about a greedy monkey. One day, the monkey wants to find some food to eat, then he finds there are a lot of watermelons in the ground, but he gives up to pick up one, because he thinks there must be better one in other place. At the end, he misses the food and gets the bad one.  
我曾经看过一本书，里面讲了一个故事，是关于一只贪婪的猴子。有一天，猴子想找一些食物吃，他发现地上有很多西瓜，但他并没有去捡，因为他觉得在其他地方肯定会有更好的。最后，他错过了，得到了不太好的那个。