The word " ---"is not often used in everyday speech;then when is the word used?

问题描述:

The word " ---"is not often used in everyday speech;then when is the word used?
A.parent B.adult C.child D.sibling

答案是:DΪʲô��sibing����˼�� �ֵܡ����õ���˼�����ճ�����У�everyday speech�������Ƕ���˵ ���� he is my sibling������˵�ģ����� he is my brother,��˵�������ǣ���������˵ he is my bother��ʱ���أ�ʵ���Ͼ�������sibing����˼����ˣ�������� D��