问题
补全对话，情景问答
| 从B栏中选出与A栏对应的答案。 |
| ( )1. Are you ready to order? ( )2. How much are the pizzas? ( )3. The books are on sale. ( )4. Do you have any apples? ( )5. May I borrow your books? | A. Yes. Lots of apples! B. Sure. C. Yes. I'll take four. D. Sixteen yuan. E. Yes. |
答案
1.E 2.D 3.C 4.A 5.B
缺失，上颌为无牙颌，下颌为游离端缺牙，上下颌牙槽嵴吸收都较重，可摘局部义齿修复