下列哪一种结构与维持细胞的形态无关（）。
A.微体
B.微丝
C.中间丝
D.微管
E.以上都是
参考答案：A
People read newspapers and magazines in order to keep themselves _____ of what is going on in the world outside.
A．connected
B．informed
C．known
D．updated
冲孔
