试述猪附红细胞体的临床症状、病理变化及常用的治疗药物
参考答案：
临床症状
（1）猪附红细胞体病的潜伏期6～10天。哺乳仔猪和育成猪均可感染，特别是1月龄左右的仔猪死亡率高。
（2）病猪主要表现体温高热稽留，食欲下降甚至废绝，精神沉郁，贫血、黄疸和全身皮肤发红，以耳部、鼻镜、腹部皮肤发红最严重。最急性病例数小时至1日死亡。
（3）急性和亚急性为数日至2～3周，个别慢性病可达1个月之久。有些病猪自愈或治愈后有贫血现象，生长受阻，成为僵猪。
病理变化：
（1）急性死亡仔猪尸僵明显，全身肌肉色泽度变淡，脂肪亦黄染；
（2）全身淋巴结肿大，血液稀薄如水样，凝固不良；
（3）脾肿大、质软、有暗红色出血点，有粟粒大的丘疹样结节；肝肿大、质脆，并有出血点或小点坏死、坏死灶；肾肿大，肺淤血水肿；心肌苍白松软，心外膜和心脏冠状沟脂肪出血黄染；骨髓增生。
治疗药物
猪附红细胞体常用的治疗药物：贝尼尔、新胂凡钠明、土霉素和四环素等。
It's not just women who wear skirts. Men can wear them, too. In Scotland, men wear a kind of skirt called a kilt. The kilt is their national dress and an important part of their tradition (传统). A kilt is a colored skirt reaching down to the knees(膝盖). It has checks (格子) on it with different colors, like red or blue. Each family in Scotland has its own colors. How did the Scots start to wear kilts? There are many stories about it. One story is that the kilt was invented (发明) in the 1720s by an English factory owner, Thomas Rawlinson. Rawlinson had a lot of Scottish workers in his factory and he thought their clothing got in the way of their work. So he cut their long clothes into a shorter skirt. Today, most Scotsmen see kilts as formal(正式)dresses. They usually only wear them at weddings or big dinners. There are only a few men who still wear a kilt every day. Scots also wear kilts in parades when they play their traditional musical instrument(乐器): bagpipes (风笛). The army still has kilts as the dress uniform (制服), but they no longer wear them to fight (打仗). 小题1: A kilt is ____.
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