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.（）

What are the stages of language development in vygowski...

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

The following concepts do not belong to Piaget’s Theory...

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

Chomsky has argued that all languages have the same und...

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