A.雙股RNA.分節(jié)段 B.雙股DNA C.單股DNA D.單負(fù)股RNA E.單正股RNA
A.相輔相成B.激烈競(jìng)爭(zhēng)C.各自為謀D.相互羈絆
A.出發(fā)點(diǎn)B.維持點(diǎn)C.立足點(diǎn)D.基礎(chǔ)點(diǎn)