我国滞报金的起征点为( )元。
A．50
B．100
C．300
D．500
参考答案：A
During many sectors are foundering, the $21 billion videogame-software industry is booming, adding game developers at a rate of 2,500 a year in the United States alone.
A．When
B．Whereas
C．Would
D．While
外部储存器区别于内部储存器的最大特点是（）.
