问题
单项选择题
关于无牙颌患者牙槽嵴的描述，下列哪项是不正确的 （）
A.由牙列缺失后牙槽突逐渐吸收而形成
B.将整个口腔分为口腔前庭和口腔本部两个部分
C.其上覆盖的是高角化鳞状上皮
D.是全口义齿的主要固位区
E.是全口义齿的主要咀嚼压力支承区
答案
参考答案：D
解析：全口义齿边缘延伸的部位均为主要固位区。
搜题请搜索小程序“爱下问搜题”
关于无牙颌患者牙槽嵴的描述，下列哪项是不正确的 （）
A.由牙列缺失后牙槽突逐渐吸收而形成
B.将整个口腔分为口腔前庭和口腔本部两个部分
C.其上覆盖的是高角化鳞状上皮
D.是全口义齿的主要固位区
E.是全口义齿的主要咀嚼压力支承区
参考答案：D
解析：全口义齿边缘延伸的部位均为主要固位区。
| 阅读理解。 |
| Tell a lie (谎言) just to be polite? Tony is seven years old. He begins to go to school this term. He works very hard. He is polite and has lots of friends. They all like him very much. It is Saturday today. Tony, his sister Kate and their mother are at home. His mother does some housework and he watches TV. Kate does her homework. At ten o'clock, his father comes back with a bag of apples for the family. Tony likes apples very much and wants to eat one. His mother gives four apples and says, "Go and wash them." Tony washes the apples and then gives them back to his mother. His mother asks him, "Which apple do you want, Tony?" "The biggest one," Tony answers quickly. "What?" says his mother, "You should want the smallest one, Tony. You should be a polite boy!" "Should I tell a lie just to be polite, Mum?" |
| 1. Tony begins to go to school when he is ______ years old. |
[ ] |
| A. five B. six C. seven D. eight |
| 2. Tony's sister Kate is a . |
[ ] |
| A. teacher B. student C. worker D. waitress |
| 3. Tony's mother gives him four apples to wash because ______. |
[ ] |
| A. she doesn't want Tony to eat too many apples B. Tony cannot carry more apples C. Tony can eat four apples D. there are four people in his family |
| 4. Tony wants to eat . |
[ ] |
| A. the biggest apple B. the smallest apple C. the biggest and the smallest apples D. the four apples |
| 5. From the story we can know Tony wants to be ______. |
[ ] |
| A. friendly B. helpful C. polite D. honest |