问题
单项选择题
老年人用卡那霉素应谨慎,因为
A.老年人肝血流量减少,肝功能下降,从而使血药浓度下降
B.老年人血浆蛋白含量降低
C.老年人体内水分减少、药物分布容积降低
D.老年人肾功能降低,药物半衰期延长、耳肾毒性增加
E.老年人易产生毒性反应
答案
参考答案:D
解析: 卡那霉素主要经肾排泄,具有肾毒性,而老年人肾的代谢能力下降,因此用卡那霉素应谨慎。
老年人用卡那霉素应谨慎,因为
A.老年人肝血流量减少,肝功能下降,从而使血药浓度下降
B.老年人血浆蛋白含量降低
C.老年人体内水分减少、药物分布容积降低
D.老年人肾功能降低,药物半衰期延长、耳肾毒性增加
E.老年人易产生毒性反应
参考答案:D
解析: 卡那霉素主要经肾排泄,具有肾毒性,而老年人肾的代谢能力下降,因此用卡那霉素应谨慎。
Christmas is on December 25th. It’s my favorite 26 . In the morning my parents often 27 the house. My brother and I often 28 the Christmas tree with lights. Then we put a star 29 the top(顶部) of the tree. In the evening, everything is 30 . We sit at the table and eat turkey(火鸡) for Christmas 31 . After the meal, my brother and I watch TV. We often wait for Father Christmas 32 we want to 33 presents from him. Father Christmas always knows 34 I want. Next year I’m going to the cinema with 35 parents. I want to have a different Christmas Day.
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