【单选题】关于牙颌面畸形的叙述哪项是错误的( )
B.
正颌外科是以研究和诊治牙颌面畸形为主要内容的学科
C.
常见的颌骨发育畸形包括过度发育与发育不足两大类
E.
错 完全可以反映和代表牙颌面畸形基本的病变特征
【单选题】I _______my English book at home, so I had to ____one from my classmate.
【单选题】I my homework yesterday, but unfortunately I forgot about it totally.
【单选题】I _____ my homework at home this morning. [ ]
【单选题】—Where ______ you ______ Elsa? —At the supermarket. But she almost forgot my name. [ ]
【单选题】my guest have forgotten my address?
【判断题】一组4位二进制数组成的BCD码可表示16以内的任何一个十进制数。