A.妊娠2個(gè)月以?xún)?nèi) B.妊娠2~3個(gè)月 C.妊娠4~6個(gè)月 D.妊娠7~8個(gè)月 E.生產(chǎn)以后
A.10s B.30s C.40s D.50s E.60s
A.2個(gè)月以后 B.4個(gè)月以后 C.6個(gè)月以后 D.8個(gè)月以后 E.10個(gè)月以后