Drinking more water is good for the rest of your body, helping to lubricate joints and______toxins and impurities.
【正确答案】 C
【答案解析】解析:多喝水对身体的器官是有益的,有助于润滑关节并冲洗掉毒素和杂质。screen out“筛查”,knock out“撞击”,flush out“冲刷”,role out“排除”。根据题意,本题正确答案为C。