问题
单项选择题
一患者左上21、右上15678和左下6、右下678缺失，戴义齿后咬舌，原因是 （）
A.人工后牙覆牙合过大
B.人工后牙覆牙合过小
C.人工后牙牙合平面偏高
D.人工后牙牙合平面偏低
E.人工后牙牙尖斜度过大
答案
参考答案：D
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一患者左上21、右上15678和左下6、右下678缺失，戴义齿后咬舌，原因是 （）
A.人工后牙覆牙合过大
B.人工后牙覆牙合过小
C.人工后牙牙合平面偏高
D.人工后牙牙合平面偏低
E.人工后牙牙尖斜度过大
参考答案：D
Once upon a time, there was a group of forest deer．In this group was a wise and respected 36 , smart in the ways of deer．He taught the tricks of 37 to the fawn-the young deer． One day, his younger sister 38 her son to him, to be taught 39 is so important for deer．The teacher said to the fawn, “Very well, you can come at this time tomorrow for your first 40 ．” At first, the young deer came to the lessons as he was 41 to．But soon, he became more interested in 42 with the other young bucks（雄鹿）．He didn’t realize how 43 it could be for a deer who learned 44 but deer games．So he started 45 ．Soon he was escaping school all the time． 46 , one day the fawn who stayed away from school 47 a snare（陷阱）and was trapped．Since he was 48 , his mother got worried．She went to her brother the teacher, and 49 him if her son had learned something．The teacher 50 ,“My dear sister, your son was disobedient and 51 ．Out of respect for you, I 52 to teach him．But he did not want to learn the 53 of deer．He escaped school! How could I possibly teach him?” Later they heard the sad news．The 54 fawn had been trapped and killed by a hunter．He skinned him and took the meat home to his family． The moral is: Nothing can be learned from a teacher by one who 55 the class．
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