Unlike animal communication systems, human language is_____.
A.stimulus free
B.stimulus bound
C.under immediate stimulus control
D.stimulated by some occurrence of communal interest
出自:信阳师范大学英语语言学

完成拼图验证

按住下方滑块,将拼图拖到缺口处后松开。

拼图背景,将小拼图拖到缺口处
向右拖动滑块