2014 is the year of horse in China. Do you know anything about the horse?

    The horse is strong and runs very fast. He's a useful and hard-working animal. The horse learns to know his owner soon. He loves his owner, even after his owner loses his life. Here's a story about such a horse. In a war, the owner passed away(死), and fell from his horse. When people found his body some days later, the horse was still standing beside it. During that long time, the horse didn't leave the body of his owner, without food or water, in the coldest weather, driving away the birds that might eat it. Wasn't he a great animal?

在我国的动植物中，将临朐山蝎和蜘蛛分成一类，将虹鳟鱼和乌鳢分成另一类，这样划分的分类等级单位是（    ）

小红发现自己的小便发红，去医院验尿发现尿中有红细胞和蛋白质等，据此推断小红病变的位置（　　）