根据形态与功能特点,恒牙可分为
A.前牙与后牙
B.同形牙与异型牙
C.切牙、尖牙、磨牙
D.切牙、尖牙、前磨牙、磨牙
E.单根牙、双根牙、多根牙
参考答案:D
26. —How about buying Sam a mobile phone? After all, he isn’t a boy any more.
—I think it’s necessary, for we sometimes want to make sure if he ______home for dinner.
A.will come
B.comes
C.has come
D.would come
作衣料的蓝印花布在内容上多以()为主
A.人物
B.植物花卉
C.走兽、禽、鸟、鱼、虫
D.山水图案