单选题 Some birds are ______ half-asleep, and they are able to control which side of the brain remains awake.

【正确答案】 B

【答案解析】句意：按照字面意义，有些鸟是半睡半醒，而且它们能控制大脑的任意一边保持清醒。literally字面上地。Wordily啰嗦地，唠叨地。illiberally吝啬地，小气地。liberally公平地，大方地。