There are _____ 50 students in our class.[ ]
A. more
B. over
C. many
D. few
答案:B
简述无领导小组讨论的概念、类型、原理和优缺点
计划的制订既要考虑全局,又要分清主次轻重,抓住关键及重点()
A.系统性原则
B.重点原则
C.创新原则
D.弹性原则
E.可考核性原则