【简答题】A large sum has been __________ ( 分配 ) for buying new books for the library.
【简答题】A large sum of money has been put asidefor that purpose.
【单选题】A large sum of money has been raised the poorly-educated children in the mountainous areas.
【单选题】A large sum has been _______ for buying new books for the library.
【单选题】A large sum of money has been raised for the of the poorly-educated children in the mountainous areas.
【多选题】以下对核外电子运动状况的描述正确的是 [ ]
A.
电子的运动与行星相似,围绕原子核在固定的轨道上高速旋转
B.
能量低的电子只能在s轨道上运动,能量高的电子总是在f轨道上运动
D.
在同一能层不同能级上运动的电子,其能量肯定不同
【简答题】看音标拼写单词并翻译成汉语: ['kɒlɪdʒ]_________________
【单选题】下列关于一定原子轨道上运动的电子的几种判断正确的是( )
【判断题】私有继承方式中,基类中的成员都不能被派生类所访问。
【单选题】A large sum of money has been raised the poorly-educated children in the mountainous areas.