网络中各种被共享的资源按特性可以分为四类：硬件、软件、（）和（）。
参考答案：数据；通信
________the help of the teacher, the student who wasn't good at math________the difficult problem
quickly.[ ]
A. Under; worked out
B. With; worked on
C. Under solved
D. With; solved
按插花器具分类（）
A.瓶花
B.盘花
C.碗花
D.缸花
E.筒花
F.篮花
