问题
单项选择题
有关牙周袋的概念，错误的是（）
A.牙周袋是病理性加深的龈沟
B.假性牙周袋因牙龈肿胀或增生所致
C.牙周袋包括假性牙周袋和真性牙周袋
D.真性牙周袋是指≥6mm
E.临床上的牙周袋既有龈缘向冠方，延伸，也有沟底向根方延伸龈有无增生或肿胀
答案
参考答案：D
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有关牙周袋的概念，错误的是（）
A.牙周袋是病理性加深的龈沟
B.假性牙周袋因牙龈肿胀或增生所致
C.牙周袋包括假性牙周袋和真性牙周袋
D.真性牙周袋是指≥6mm
E.临床上的牙周袋既有龈缘向冠方，延伸，也有沟底向根方延伸龈有无增生或肿胀
参考答案：D
There was a time when I thought my dad didn’t know a thing about being a good father. I couldn’t 36 him ever saying the words “I love you.” It seems to me his only purpose in life was to say “ 37 ” to anywhere I wanted to go and anything I wanted to do, including getting a 38 . Some parents bought their kids cars when they got their driver’s licenses. Not my dad ---- he said that I’d have to get a job and buy my own. So that is what I did. I got a job at a very nice restaurant and 39 every penny I could and 40 I had enough to buy my car, I did! The day I brought that car home, my dad was the first one I wanted to 41 to. “Look, dad, a car of my own. If you ever want a ride, I’ll only 42 you five dollars.” I offered with a smile. “I see,” was all he said. One day, there was something wrong with my father’s truck. So he needed a 43 to work. The sun wasn’t even up when we left the house , 44 it was already getting warm out. It was going to be a(n) 45 day. As I dropped my dad off, I 46 him, dressed in his work clothes, getting his 47 from the truck (车尾箱) of my car. Watching his sun-weathered face, and even from a distance I could tell there were 48 lines than I ever remembered being there before. I realized how hard my dad works for the family. My father is a cement finisher(水泥修整工). In that instant, it 49 to me that he actually got down on his hands and knees to sweat over hot concrete to make a living for his family. And he did this day in and day out, 50 hot it got. Never, not once, had I hear him 51 about it. To him we were “worth” it. And never once did he “charge” us for it. When he closed the trunk, his tools set off to the side, he walked over to my window to 52 me five dollars. I rolled down the window and said “Good-bye, dad. Keep your five dollars. It’s my 53 . Don’t work too hard. I love you.” His 54 met mine, then glanced away in the direction of his waiting tools, he 55 his throat and said, “Oh, and… me, too.”
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