问题
选择题
Tony and Jeff _____ study Chinese, so they can speak Chinese.[ ]
A. seldom
B. often
C. can't
D. never
答案
答案：B
搜题请搜索小程序“爱下问搜题”
Tony and Jeff _____ study Chinese, so they can speak Chinese.[ ]
A. seldom
B. often
C. can't
D. never
答案：B
缺失，间隙小，
牙根长大，
稳固，口腔卫生差，咬合关系正常。患者要求固定义齿修复。
X线检查