A:to be completed
B:having been completed
C:completed
D:being completed
下列叙述中,错误的是( )
“我是南极的主人,我有流线型的躯体,人家说我是身穿白衬衫、黑燕尾服的绅士。我经常站立,前肢退化成游泳的鳍状肢。为了抵御严寒,我皮肤下有厚厚的脂肪保护层”回答下面小题。