上颌第一磨牙各根管口的形态是()A.近颊根管口较圆 B.若近颊根分为颊、舌两根管口时 发布时间:2017-02-06 06:06 │ 来源:www.tikuol.com 题型:单项选择题 问题: 上颌第一磨牙各根管口的形态是()A.近颊根管口较圆B.若近颊根分为颊、舌两根管口时,两根管口较扁C.近颊根管的舌侧根管口距舌侧根管最近D.远颊根管口较扁E.舌侧根管口较窄
题型:单项选择题 Don't laugh at _____. You should help them when they are in trouble.[ ]A. other B. the other C. othersD. the others 查看答案