Multiple choice general knowledge Giraffes.. use their tail to ward off enemies. produce milk for humans to drink. can moo. None Reveal answer Fill a bubble to check yourself C Correct answer Explanation Giraffes can indeed produce a moo-like sound, though it's less commonly heard than their other vocalizations.选项A错误 - 长颈鹿主要用蹄子踢击来防御敌人，而不是尾巴。选项B错误 - 长颈鹿的乳汁仅供幼崽饮用，不适合人类消费。长颈鹿有各种发声方式，包括哞叫声。