The night when I left for UNESCO Dar es Salaam， my grandfather came to bid farewell. He did not urge me to keep safe as I......

翻译：风信子　　　　同学们，新学年又开始了，在新的一年里你做好准备了吗？除了努力学习外，大家也不要忘记调整自己的心态哦。Last year ......

生活中到处都充满着各种乐趣，一些我们平时不太容易注意到的小事情也是有秘密的哦! ......

Yesterday was Tree Planting Day. My classmates and I planted many young trees on the hill near our school.　　Trees are ......

A little red hen once found a grain of wheat. “Who will plant this wheat？” she said. “I won’t，” said the dog.“I won......

A poor farmer had a friend who was famous for the wonderful apple he grew.　　One day， his friend gave the farmer a young......

[Objective]The purpose was to find out the most suitable growth condition region of Cynomorium Songaricum.in XinJiang an......

环游世界数十载,他用相机记录着点点滴滴。The first memory of travel for Qi Juanjuan was seeing mural paintings at the Bing......

采用树干解析法对简阳市“蜀台红香椿”人工林生长规律进行研究。结果表明：27 a生香椿的胸径（DBH）、树高与材积总生长量分别为26.03 c......

土壤动物是次生林生态系统的重要组成成分。为探讨次生林生态系统不同林型对大、中型土壤动物群落结构特征的影响,于2007年对东部......