哪项为胶质母细胞瘤的镜下特点()
A.肿瘤细胞单一组织学形态
B.肿瘤细胞直径大小基本相等
C.肿瘤细胞核分裂象少见
D.供血血管丰富
E.起源于血管内膜的间质纤维增生
参考答案:D
It was ______________news that we all excited at it.
A such an exciting B so exciting a C such exciting D so an exciting
白猪配黑猪,其子一代都是白猪,说明猪的白色是()。
A、隐性性状
B、显性性状
C、伴性性状
D、不完全显