问题
单项选择题
影响切道斜度大小的因素为（）
A.上前牙向唇侧的倾斜度
B.颞下颌关节后斜面的斜度
C.覆的程度
D.下前牙向唇侧的倾斜度
E.覆盖与覆的程度
答案
参考答案：E
解析：切道是指在咀嚼过程中，下颌前伸到上下颌牙切缘相对后返回到牙尖交错的过程中，下颌前牙切缘所运行的轨道。切道斜度与覆成正比，与覆盖成反比。故答案为E。
搜题请搜索小程序“爱下问搜题”
影响切道斜度大小的因素为（）
A.上前牙向唇侧的倾斜度
B.颞下颌关节后斜面的斜度
C.覆的程度
D.下前牙向唇侧的倾斜度
E.覆盖与覆的程度
参考答案：E
解析：切道是指在咀嚼过程中，下颌前伸到上下颌牙切缘相对后返回到牙尖交错的过程中，下颌前牙切缘所运行的轨道。切道斜度与覆成正比，与覆盖成反比。故答案为E。
| 完形填空 | ||||
| Hello, everyone! Do you want to know about school life(生活)in America? Let me tell you. I am a middle school 1 . This year I go to America to study (学习). I have 2 from Monday to Friday. School 3 at nine o'clock in the morning. And I can 4 at around three o'clock in the 5 . I have maths, science, P. E. , art, English. . . at school. After class I 6 much homework, so I can 7 lots of other(其他的)things. I join a rock band(乐队)because I like 8 very much. And I join the 9 club. Science is difficult, 10 interesting. | ||||
|