3[单选题,1.3分] This _____ factor means that there is often a connection in appearance and temperament between parents and children.
A.historical
B. hereditary
C.historic
D.hyponymy
出自:河南大学-本科英语

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