For natural resource science, resource productivity studying is an important subject. But researches on tourism resource......

Major and profound changes have taken place in China over the past 30 years.Rapid socioeconomic progress has exerted a g......

灵感是创造性的劳动过程中一种客观存在的可以感知的心理现象.艺术灵感作为人类灵感思维的能力之一,具有一定的可培养性.培养艺术......