Dear Mr. Yu,
I am awfully sorry that I cannot come to school tomorrow. My sister called me last night, saying that my father was seriously ill. I beg to apply for one week’s leave of absence from AEth to BAst, in order to see my father in Qingdao.
I should be much obliged if you would grant me my application. As regards the lessons to be missed during my absence, I will do my best to make up for them as soon as I get back.
第20题: [单项选择]新生儿生后2~3天出现黄疸,持续4周仍未消退,母乳喂养,一般情况好,可能处于() A. 生理性黄疸 B. 新生儿溶血症 C. 新生儿胆道闭锁 D. 新生儿核黄疸 E. 母乳性黄疸 参考答案:E 答案解析:生理性黄疸特点为,生后2~3天出现黄疸,第4~5天加重,7~14天消退;新生儿溶血症特点为,生后24h内出现黄疸,且发展快,程度重;新生儿胆道闭锁特点为,生后2~3周出现黄疸,呈进行陛加重,大便灰白色
第24题: [单项选择]以下关于遗传性视网膜劈裂症的说法都正确,除了() A. 性遗传性疾病 B. 视网膜纱膜样劈裂 C. 视网膜劈裂多见于颞上方 D. 合并玻璃体积血 E. 合并视网膜脱离时行视网膜复位手术 参考答案:C 答案解析:视网膜劈裂常见于年轻男性患者,发生在视网膜内层和玻璃体视网膜交接面的萎缩性病变,属性遗传性疾病,眼底视网膜纱膜样劈裂和或黄斑部的视网膜劈裂,多见于颞下方。部分老人由于视网膜的老年性改变也可发生劈裂。可