问题
选择题
| My brother is very lazy. He _____ does housework. |
A. always B. often C. never D. sometimes |
答案
答案：C
搜题请搜索小程序“爱下问搜题”
| My brother is very lazy. He _____ does housework. |
A. always B. often C. never D. sometimes |
答案：C
银汞合金充填体相连接，不能分开，且有悬突，牙龈 * * 红肿，探出血，叩痛（±），冷热测同对照牙。该患牙的最佳处理为（）