相关研究表明早期动作的发展也将促使儿童的认知发展不断高级化、复杂化。儿童通过爬行获得了运动经验,促进了感知觉的发展;而手部动作主要包括抓握动作和手势的发展,在儿童与环...

the fifth section, based on the empirical result of the third and fourth sections and from the perspective of global value chain, discusses how China should take advantage of currency appreciation to encourage innovation to adjust economic s...