在课堂教学过程中,突然发生了意外,教师即兴应变,因势利导地将其引入教学中,这种组织形式称为()。
A.创境导入
B.机变导入
C.故事导入
D.设疑导入
参考答案:B
Which of the following economic schools of thought suggests that the greatest good occurs to the greatest number of people when wealth is transferred from the rich to the poor()
A. Symmetry.
B. Utilitarianism.
C. Utopianism.
须由有撤销权的当事人作出对可撤销合同的变更或撤销。( )