中国确定西部地理范围

来源 :西部探矿工程 | 被引量 : 5次 | 上传用户:fmylqy
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
其他文献
喜欢冒险的我决定去玛丽姨妈家,攀爬她家山后那座神秘的大山。姨父阿梅斯说:“真不巧,这几天我很忙,因为我的族人还等着我开会呢。还是等我有时间了再带你去吧,如果没人领着,你很可
英语是世界通用的一种重要的语言交际工具。作为跨文化语言教学的英语课,只有把英语当做交际工具来教来学,才能取得良好的效果。为了有助于培养和提高小学生学习英语的开口能力
Tea is an important cash crop, representing a $40 billion-a-year global market. Differentiation of the tea market has resulted in increasing demand for tea prod
Yellow maize contains high levels of β-carotene(βC), making it an important crop for combating vitamin A deficiency through biofortification. In this study, n
Ethylene response factor proteins play an important role in regulating a variety of stress responses in plants,but their exact functions in submergence stress a
Spike number per m~2(SN),kernel number per spike(KNPS) and thousand-kernel weight(TKW)are the three main components determining wheat(Triticum aestivum L.) yiel
Drought stress linked with climate change is one of the major constraints faced by common bean farmers in Africa and elsewhere. Mitigating this constraint requi
期刊
历史教学评价是历史学科与教学评价相结合而出现的一个新领域,高中历史教学评价是基础教育历史教学评价的重要组成部分。在当前课程改革不断深化、素质教育全面推进的新形势下,研究目前高中历史教学评价的弊端及其策略,对我们指导新课程下的高中历史教学及其教学评价有着重要的现实意义。    一、现行高中历史教学评价存在的问题    1. 评价“主体”错位,忽视学生的主体性和个体差异性  为了实现其甄别和选拔功能,
Despite the great success achieved by the exploitation of heterosis in rice,the genetic basis of heterosis is still not well understood.We adopted an advanced-b
期刊
Intensification in rice crop production is generally understood as requiring increased use of material inputs: water, inorganic fertilizers, and agrochemicals.