问题
单项选择题
以下选项中说法错误的是（）
A.前牙接触区靠近切缘部位
B.前牙接触区的唇舌径大于切颈径
C.前磨牙及第一磨牙近中接触区在邻面近
1／3偏颊侧
D.第一磨牙远中与第二磨牙的接触区在邻面1／3的中1／3附近
E.后牙接触区的颊舌径大于颈径
答案
参考答案：B
搜题请搜索小程序“爱下问搜题”
以下选项中说法错误的是（）
A.前牙接触区靠近切缘部位
B.前牙接触区的唇舌径大于切颈径
C.前磨牙及第一磨牙近中接触区在邻面近1／3偏颊侧
D.第一磨牙远中与第二磨牙的接触区在邻面1／3的中1／3附近
E.后牙接触区的颊舌径大于颈径
参考答案：B
| 选择方框中的句子，补全对话。 | |
| Mother: Did you get your report card today, Mary? Mary: Uh-huh. Mother: So, 1.________________ Mary: I did OK in some subjects. Mother: What did your history teacher say? Mary: He said 2. ________________ Mother: That's not so good. How about English? Mary: Oh, Mr Sun said 3. _______________ Mother: That's nice. Mary: And Ms Chen said 4._______________ Mother: What does he teach again? Mary: She's my maths teacher. Mother: That's excellent. 5._______________ Mary: Oh, well, science is very hard. Mother: Yes, but what did your teacher say? Mary: Umm…she said I was lazy. Mother: Oh, Mary! You'll have to try harder at science.
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