上唇系带粗大不能自行萎缩最易引起的错畸形是()
A.前牙反
B.深覆盖
C.上中切牙间隙
D.深覆
E.上前牙拥挤
参考答案:C
苍术的组织结构中有()
A.油细胞
B.油室
C.油管
D.树脂道
E.乳汁管
--- Do you mind telling us something about this area?
--- Not at all. ________ of the land in this area _________ covered with trees and grass.
A.Two fifth, is
B.Two fifth, are
C.Two fifths, is
D.Two fifths, are