A new study on birds’ sleep has revealed that （）
A、half-brainsleepisfoundinallkindsofbirds
B、half-brainsleepischaracterizedbyacceleratedbrainwaves
C、birdscancontroltheirhalf-brainsleepconsciously
D、birdsalwayssleepwiththewholeoftheirbrainatrest
发布时间：2024-09-24 07:56:44
