题目

下列不含磷脂的细胞器是（）       A．                                                         中心体和液泡 B．  高尔基体和中心体       C．                                                         内质网和核糖体    D． 中心体和核糖体----Doctors, it seems that you like to work with animals.----Yes, I think animals should ______ as our friends.A．regard B．be regardedC．be regardingD．are regarded