最早设计计算机的目的是进行科学计算,其主要计算的问题面向于()。
A.科研
B.军事
C.商业
D.管理
参考答案:B
She has been in Tianjin for ten years. Tianjin has become her second__________. [ ]
A. family
B. house
C. home
D. room
男装西服分哪几类?