患者男,32岁,缺失,伸长,龈间隙3mm,哪种处理较恰当()
A.义齿用铸造金属面
B.义齿面和支托整铸
C.义齿支架和支托整铸
D.牙髓切除后磨改
E.不修复
参考答案:B
_____ along with host families, I believe, language travel students are likely to get enough language practice. [ ]
A. Stay
B. Having stayed
C. Staying
D. To stay
“民以食为天,食以安为先”。食品安全与身体健康密切相关,下列做法不会导致食品中含有对人体健康有害物质的是 [ ]
A.为使果汁长期保鲜,在其中加过量防腐剂
B.用小苏打(碳酸氢钠)发酵做面包
C.用福尔马林(含50℅的甲醛液体)保鲜鱼肉等食品
D.在牛奶中添加三聚氰胺,提高奶液中的含氮量