题目

已知正实数满足,则的最小值为              . 答案：4请选择与文字描述所对应的图片。 1．He is short and fat（胖的）．His hair is short and black．He has two small eyes and a big mouth．He likes laughing（笑）and always makes people laugh． 2．He is tall．He has no hair．His eyes and mouth are small．His nose is very big． 3．She is beautiful．She has long, curly（卷曲）hair．She has big eyes． 4．She is short and very fat．She has small eyes and wears glasses（眼镜）．Her hair is short, curly and brown． 1．________       2．________       3．________                4．_______