∴∠B=∠C,
在△ABD与△ACE中,
∵ {AB=AC∠
下列蛔虫的形态结构特征中,哪项不属于适于寄生生活的特点( )
做膝跳反射实验时,迅速正确叩击受试同学的( )
--- Is her sister a teacher or a student?
--- .