老鼠学会用爪按压杠杆就能获得食物,这是()
A、经典性条件反射
B、操作性条件反射
C、初级条件反射
D、高级条件反射
参考答案:B
某一制度的确立,“标志着中国古代政治体制发生了深刻变化,决策、审议、执行权力的分解”,“……分工明确,提高了办事效率”。这评价的是 ( )
A.三公九卿制
B.三省六部制
C.二府三司制
D.内阁制
— Which is more popular, Yao Ming and Liu Xiang?
— I think them are popular with us. [ ]
A. either of
B. none of
C. both of
D. all of