初戴全口义齿时，发现下颌偏向右侧，上下颌前牙中线不一致，双侧后牙咬合接触不良，最不可能的原因是（）。
A.某处压痛所致
B.初戴义齿不会咬合
C.咬合不平所致
D.排牙的失误
E.颌位记录错误
参考答案：B
解析：确定颌位关系时，如果患者下颌偏向左侧，戴牙时下颌会出现偏向右侧的现象，表现为上下义齿中线不一致，下颌义齿偏斜也有假象，可因某处有疼痛所致，消除疼痛原因后，偏斜也随之消失。疼痛的原因中有正中颌关系不正确，并且有早接触点；人工牙排列的位置不正确。初戴义齿患者可通过医生的戴牙指导达到正确的咬合关系位置，答案选B。
“Never give up!” It is my law of life. It has brought me . I learned the law from my father’s story.
My father was in a poor village in the north of Jiangsu, in China. When he was a young boy, he went to school in the morning, then in the fields till sunset. And then he did his homework midnight. Life was hard, because they had no !
At the age of 14, my father heard of the United States of America. It was the land of gold, the land where people can become rich.
“ don’t I go to America?”he thought to himself, full of hope.
So my father came to America. “I had thought it was easy to money in America,”he told me. “But when I arrived there, I realized it was not true. They did not like to hire me because I spoke English. Later, I worked in a small restaurant, cleaning up tables, dishes and sweeping the floor. Life was for the first few years. I worked from 10 am to 11 pm. I wanted to go to school to learn English, but it was impossible. I couldn’t the schooling.”
My father working hard, and reached his goal.
“Alan,”he often says to me. “If you want something, you have to work for it and never give up. Things do not come in life.”That is what I learned from my father.
| 小题1: | A．disaster B．loss C．success D．pity |
| 小题2: | A．life B．fashion C．danger D．history |
| 小题3: | A．famous B．lucky C．rich D．born |
| 小题4: | A．taught B．worked C．studied D．slept |
| 小题5: | A．until B．towards C．for D．during |
| 小题6: | A．experience B．energy C．time D．money |
| 小题7: | A．kind B．poor C．strong D．lazy |
| 小题8: | A．What B．How C．Why D．When |
| 小题9: | A．discover B．make C．collect D．spend |
| 小题10: | A．little B．good C．much D．excellent |
| 小题11: | A．giving B．running C．washing D．receiving |
| 小题12: | A．comfortable B．cheerful C．nice D．hard |
| 小题13: | A．borrow B．need C．afford D．pay |
| 小题14: | A．kept B．finished C．minded D．stopped |
| 小题15: | A．really B．easily C．quietly D．slowly |