Ⅲ度深覆盖是指上下前牙切端前后向距离为()
A.0~3mm
B.3~5mm
C.5~8mm
D.5mm以上
E.8mm以上
参考答案:E
I wanted to buy a copy of The Youth, but there was _______ left in the bookshop. _______has just bought the last one.
A.no one; Everybody
B.something; Nobody
C.anyone; Somebody
D.none; Somebody
哪些因素可能会影响母畜的正常分娩?