口铸铁中，石墨的形态是（）。
A.片状
B.球状
C.团絮状
参考答案：A
Large of information have been stored in the computer. [ ]
A.numbers
B.qualities
C.amount
D.quantities
Two hundred thousand three hundred and sixty means ___________.
A．2,360
B．20,360
C．2,316
D．200,360
