人体排尿不仅起到排出废物的作用，而且对调节体内____和____含量维持细胞正常的生理功能也有重要意义．

王婶到医院体检，血液检验报告单上显示，RBC：3.0（正常值3.5～5.0）×10¹²个/L，Hb：100（正常值110～150）g/L．她除应多食用含蛋白质丰富的食物以外，还应多食用下列哪类食物（    ）

    Hi! My name is Ben. I'm 12 years old. I'm very helpful. I usually wash clothes and clean the rooms at home. I always help my teachers at school. And I am a foodie(吃货)，I like ice creams. They are sweet. And potatoes are my favourite vegetables. I like fruits, but I don't like bananas.

    I'm a cool boy，too. I like playing ping-pong，football and I can swim very well. I was afraid of dogs before，but now I have a pet dog. It drinks orange juice every day. It can play with a ball, it's so cute. I like it very much.

    What am I going to be? Mm…I want to be a police officer. Because helping people is fun for me. I will study hard and do more exercise.