节约用水的必要性 The Necessity of Saving Water
With the increasingly serious shortage of water resources, protecting water resources and water conservations has become an urgent task for human ...
世界水日 World Water Day
Though people have been always educated to save water, we can see they waste water all the time. For example, sometimes I can see children wash the...
孩子的认知 A Child’s Recognition
People must be wondering about how a little child can know the parents’ feelings. In fact, though they are small, even can’t walk, they are indeed ...