【单选题】The socio-constructivist theory was proposed by ______.
【简答题】石油及其分馏产物在供氧不足时燃烧,常常产生CO,这也是常见的大气污染物之一,将某气态烃在5倍体积的纯氧中燃烧,产物通过足量Na 2 O 2 ,并在电火花连续作用下充分反应,生成的气体体积缩小到燃烧后产物体积的3/8(气体体积都在100 0 C以上,1.01×10 5 Pa时测定) (1)试写出通式为C x H y 的某烃在供氧不足时燃烧的化学方程式(CO 2 的系数定为m) (2)当m=2时,求该...
【单选题】Which of the statements is true for socio-constructivist theory?
A.
Students should be allowed to create their own sentences based on their understanding of certain rules.
B.
Language is learned by constant repetition and the reinforcement of the teacher. mistakes should be immediately corrected, and correct utterances should be immediately praised.
C.
With the teacher's scaffolding through questions and explanations, or with a more capable peer's support, the learn can move to a higher level of understanding and extend his/her skills and knowledge to the fullest potential.
D.
Teaching should be built based on what learners already knew and engage learners in learning activities.
【判断题】The Socio-constructivist theory stresses the priority significance of interaction between teacher and student.
【简答题】2008年9月以来,三聚氰胺成为人们谈论的焦点。某同学为了测定三聚氰胺的分子式和结构简式。设计了如下实验。他查阅资料得知:三聚氰胺的相对分子质量为126,三聚氰胺在常温下为晶体,在加热条件下能与氧气发生反应生成二氧化碳、氮气和水。现有12.6g三聚氰胺晶体按下图所示实验装置反应(假设三聚氰胺完全转化成产物)。 (1)写出A装置中发生反应的化学方程式:________________________...
【单选题】丙类谐振功放,原工作临界转态,电路其他参数不变,只增大Re,放大器状态将变为( )
【简答题】名词解释: Socio-constructivist theory ( 安徽师范大学 2015 研)
【判断题】在配置伪线的时候,必须绑定相关已创建的隧道。