题干
选出你所听到的句子（ ）
A：It has small eyes and big ears．
B：It has small ears and big eyes．
答案(点此获取答案解析）
A
选出你所听到的句子（ ）
A：It has small eyes and big ears．
B：It has small ears and big eyes．
为实数集，
，则
( )
