龋第一位好发牙面为（） ["唇颊面","舌腭面","近中面","远中面","咬面"]
ROC曲线
减数法
以下矫正方法哪种是错误的。（） ["机械矫正","液压矫正","火焰矫正","手工矫正"]
As a result of peace talks between Ireland and Britain a peace agreement on Northern Ireland was signed in（）. ["April 1997 ","May 1997","April 1998 ","May 1998"]
节奏的核心是（）（）中的回环往复
