6-14-13 Friday，library）
The gravels，the rubbles，and sands
Those gravels in a stream，
The water washed them everyday。
The sun is sunny during the day，
The moon is quiet during the night。
Year by year，
Day by day；
The gravels changed into the rubbles
Year by year
Day by day
The rubbles changed into the sands。
Who has the power to make them change？
Is water？ sun？or moon？
