A.Forward pushing strategyB.Algorithmic strategyC.Heuri……

多项选择题The problem solving can be divided into three states（）

A.Confused state
B.Initial state
C.Intern state
D.Target state

判断题Problem solving is thinking that is directed toward the solving of a specific problem that involves both the formation of responses and the selection among possible responses.（）

多项选择题What are the stages of language development in vygowski’s theory.（）

A.Social
B.Egocentric
C.Pre-operation stage
D.Inner

单项选择题The following concepts do not belong to Piaget’s Theory（）.

A.Equilibration
B.Evolution
C.Assimilation
D.Accommodation

判断题Chomsky has argued that all languages have the same underlying，abstract structure-universal grammar.（）