问题
单项选择题 A1型题
与固定义齿固位无关的因素是（）
A.基牙的数目
B.固位体的种类
C.桥体龈端外形
D.上、下颌牙的排列
E.牙体预备质量
答案
参考答案：C
解析：桥体龈端外形与固位义齿的美观、自洁性和牙槽嵴黏膜的健康有关，而不影响固位力。上、下颌牙的排列由于影响固定义齿的受力方向，可能对固位力产生影响。
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与固定义齿固位无关的因素是（）
A.基牙的数目
B.固位体的种类
C.桥体龈端外形
D.上、下颌牙的排列
E.牙体预备质量
参考答案：C
解析：桥体龈端外形与固位义齿的美观、自洁性和牙槽嵴黏膜的健康有关，而不影响固位力。上、下颌牙的排列由于影响固定义齿的受力方向，可能对固位力产生影响。
At the age of seven, I went to see my grandma in Warwick and spent the summer with her. One day I went to a general store with a 34 full of what Grandma needed. “Excuse me, I need to 35 these,” I said . “So ? I’m not your 36 ! You should get yourself a basket and start filling,” Miss Bee, the owner of the store, said 37 without smiling. “If you’re 38 you’ll be home by sunset.” Sunset was five hours away. 39 , the store was a puzzle, and I wasn’t sure if I would make it. I visited Miss Bee several times a week that 40 . One afternoon when I watched her adding 35 cents instead of 29 for a can of beans, I 41 her immediately. Though being caught overcharging , she didn’t seem 42 , and she just fixed the price. All summer long I was always tricked by Miss Bee. No sooner had I memorized the soda’s location on the shelf than she rearranged the shelves and made me 43 it all over again. But by summer’s end the 44 trip that had once taken me an hour was done in 15 minutes. The morning I was to return to Brooklyn, I stepped in to get a bottle of water. “What did you 45 this summer?” she said. “That you’re so mean!” I whispered. To my 46 , Miss Bee laughed. “When you get older, you’ll be glad our paths crossed!” Glad I met Miss Bee ? No! Until one day my daughter came to me with homework 47 . “It’s too hard,” she said. “Could you finish it for me?” “If I do it for you, how will you ever learn to do it yourself?” Suddenly, I was 48 at that general store where Miss Bee had really taught me something all those years ago.
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