Her birthday is _____ July 2. And my birthday is also _____ that month.[ ]

A. in; on

B. in; at

C. on; in

D. on; at

牙骨膜组纤维（）

A.纤维起于牙槽嵴顶，呈放射状向牙冠方向走行，止于牙颈部的牙骨质 

B.自牙颈部牙骨质，向牙冠方向散开，广泛地位于牙龈固有层中 

C.自牙槽嵴向冠方牙龈固有层展开，止于游离龈中 

D.起自根分叉处的牙根间骨隔顶，至根分叉区牙骨质 

E.自牙颈部的牙骨质，越过牙槽嵴，止于牙槽突骨密质的表面