A.6個(gè)月時(shí)抱起能豎頭 B.8個(gè)月穩(wěn)坐且會(huì)爬 C.10個(gè)月會(huì)坐 D.12個(gè)月站立 E.18個(gè)月獨(dú)走
A.2~4枚 B.5~8枚 C.9~10枚 D.11~12枚 E.12~14枚
A.8個(gè)月 B.10個(gè)月 C.12個(gè)月 D.14個(gè)月 E.16個(gè)月