我国的电化教育与国外的教育技术的主要区别之处是（） ["开发学习资源","控制教育或教学的过程","两者的目的","研究的对象、领域和方法"]
对流感病毒抗原转变的错误叙述是（） ["HA和（或）NA变异幅度大","产生流感病毒新亚型","由不同型别的流感病毒基因重组造成","由病毒基因点突变造成"]
Which of these is a Layer 2 transport architecture that provides packet-based transmission optimized for data based on a dual （counter-rotating） ring topology？（） [" DTP"," RPR"," SDH"," CWDM"," DWDM"]
生物小循环
简述科学素养的成长规律。
分析近体诗的平仄应采取什么步骤？
