问题
单项选择题 A1/A2型题
矫治器应有如下性能，除外（）
A.对口腔组织及颌面部无损害，不影响其生长发育和功能
B.美观舒适，易于清洁
C.力量易于控制，便于调整
D.材料有一定的强度，具有稳定的支抗
E.产生持续的力，加快牙齿的移动
答案
参考答案：E
搜题请搜索小程序“爱下问搜题”
矫治器应有如下性能，除外（）
A.对口腔组织及颌面部无损害，不影响其生长发育和功能
B.美观舒适，易于清洁
C.力量易于控制，便于调整
D.材料有一定的强度，具有稳定的支抗
E.产生持续的力，加快牙齿的移动
参考答案：E
| 选择方框中正确的句子完成对话，其中有一项是多余的。 | |
| A: Hello, Michael. B: Hello! Where are you going? A: 1 Id like to buy something for Kangkang. B: Oh, I forgot (忘记). Tomorrow is his birthday. Let's go together. 2 A: OK, Let's go. B: What will you buy for him? A: I don't know. 3 B: (In a shop) Can I see that picture? Salesman: Sure, Here you are. B: Oh, it's not very nice. I don't like it. A: 4 . Salesman: OK, here you are. B: Oh, it's very interesting. It's a very nice plane. 5 . A: Yes, I think so. Let's take it.
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