【判断题】指导幼儿的学习与发展 , 参与幼儿园民主管理的权利都是幼儿教师的权利。
【单选题】蟒袍能够体现官员的身份,一般用于( )。
【单选题】Computers used to _____________.
B.
be large and espensive
【单选题】关于兴奋性突触传递的叙述,哪一项是错误的
D.
突触后膜对Na+、K+、Ca2+,特别是对K+的通透性升高
【判断题】Computers used to be more expensive because they were made of vacuum tubes, magnetic cores and transistors .