颅咽管瘤()
A."蛋壳样"钙化
B.基底节对称性钙化
C.双侧脑室室管膜下结节状钙化
D.脑实质内条索样钙化
E.脑回样钙化
参考答案:A
My best friend often _____________ to school by bus. [ ]
A. go
B. going
C. goes
描述决策支持系统的环境特征。