问题
单项选择题 B型题
釉质发育不全属于（）
A.牙结构异常
B.牙数目异常
C.牙形态异常
D.牙萌出异常
E.着色牙
答案
参考答案：A
解析：这是一道关于牙发育异常分类的题目，明确牙发育异常的分类及所包括的疾病。
搜题请搜索小程序“爱下问搜题”
釉质发育不全属于（）
A.牙结构异常
B.牙数目异常
C.牙形态异常
D.牙萌出异常
E.着色牙
参考答案：A
解析：这是一道关于牙发育异常分类的题目，明确牙发育异常的分类及所包括的疾病。
| 完型填空。 |
| Is He Only One Day Older than You? Joan and Alice are in Grade One. They 1 in the same building and they're good 2 .They go to school and come home together (一起). After 3 they sing, play, read or do their homework in front of the building. It's Joan's birthday today. Joan 4 Alice to her party. The little girl went there at six. The party 5 and all the people said,"Happy birthday to you, Joan!" She was very 6 . Joan's parents brought some food and the children thought it was very delicious, so they 7 much. After that they began to play in the room. They 8 a good time there. "Weren't you at home yesterday?" asked Alice. " 9 " answered the girl. "It was my grandpa's birthday and I went there with my 10 ." "What?" the little girl said in surprise (惊讶地). "Is he only one day older than you?" |
| ( )1. A. work ( )2. A. students ( )3. A. class ( )4. A. asked ( )5. A. finished ( )6. A. happy ( )7. A. saw ( )8. A. gave ( )9. A. Yes, I was ( )10. A. doctor | B. live B. teachers B. breakfast B. let B. started B. sorry B. carried B. got B. No, I wasn't B. driver | C. walk C. classmates C. school C. told C. left C. free C. found C. had C. Yes, we were C. family | D. run D. friends D. meeting D. hoped D. lifted D. busy D. ate D. heard D. No, we weren't D. cleaner |