《数学新课程标准》中明确指出:在“学生学习应当是一个生动活泼的、主动的和富有个性的过程;除接受学习外,动手实践、自主探索与合作交流同样是学习数学的重要方式.”新的课
Cotton (Gossypium) is one of the important fiber crops of the world.Cold stress affects the normal growth of cotton in every period.Although it is a complic
The Xingdi mafic-ultramafic intrusions occur in the northeastern margin of the Tarim craton. The Xingdi No. 3 intrusion is the smallest of four intrusions, with