第一恒磨牙特点中哪项不正确()
A.萌出最早,家长不认识
B.牙龈与牙冠连接疏松
C.釉质耐酸性低
D.不容易发生釉质发育不全
E.初萌时牙根未发育完成
参考答案:D
The engines of the ship were out of order and the bad weather ______ the helplessness of the crew at sea.
A.resulted from
B.turned out
C.made up
D.added to
编导在策划编排各类新闻节目时对主持人的素质与能力的要求是什么?