问题
单项选择题 A1/A2型题
牙骨质由牙胚的哪部分形成（）
A.成釉器
B.牙蕾
C.牙囊
D.牙板剩余
E.牙 * *
答案
参考答案：C
搜题请搜索小程序“爱下问搜题”
牙骨质由牙胚的哪部分形成（）
A.成釉器
B.牙蕾
C.牙囊
D.牙板剩余
E.牙 * *
参考答案：C
| 用方框内单词的适当形式填空, 每词只能用一次。 | |
2.Tony likes music and he likes . 3.Be quiet!Can you someone is singing a song? 4.Betty always the piano on weekends. 5.Tom's aunt always T shirts. 6.Let's this magazine. 7.Daming usually to his classmates. 8.Amy is going to in the lake. 9.The family like TV at home together. 10.Li Lei always others as Lei Feng. |