问题
单项选择题
牙槽嵴修整术的切口属于
A．无菌创口
B．可疑创口
C．污染创口
D．感染创口
E．化脓创口
答案
参考答案：C
解析：口腔是相对无菌环境，因其与鼻咽腔相通而污染。
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牙槽嵴修整术的切口属于
A．无菌创口
B．可疑创口
C．污染创口
D．感染创口
E．化脓创口
参考答案：C
解析：口腔是相对无菌环境，因其与鼻咽腔相通而污染。
| 通读下面短文，掌握其大意，然后从短文后面的方框内选出可以填入短文空格处的词，并将所选 词的相应字母代号填入对应题号后的横线上。 | |
| One day, if your father gets older and older, will you dislike his more words and his unhealth? Here is a 1______ letter to his son. Let's read it and see what's moving you. Dear son, When I grow old one day, please be good with me and try to 2______ me. If I get dirty when eating or if I can not dress, help me. Remember the hours I spend 3______ it to you. If I speak to you, I say some things again and 4______, please listen to me. When you were small, I had to read to you the same story again and again until you went to 5______ , When my tired legs do not let me walk, give 6______ your hand. I did the same when you started walking. Some day you will find I may make many mistakes, but I always want the best 7______ for you. When I 8______ near to you, you should be next to me, try to understand me and help me 9______ I did when you started living. Help me walk to the 10______ of my life with love and patience. I'll pay you by a smile and love. I love you, son… Your father, John
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