单项选择题

A．＄15.00.
B．＄15.40.
C．＄50.00.
D．＄50.14.
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单项选择题
A．William Smart.B．Mrs. Dodd.C．President Lyndon Johnson.D．President Nixon.
A．William Smart.
B．Mrs. Dodd.
C．President Lyndon Johnson.
D．President Nixon.
单项选择题
A．He sold traffic-counting system to local governments.B．He dropped out of his law course at Harvard University.C．He founded his own company--Microsoft Software company.D．He devised an operating system for IBM.
A．He sold traffic-counting system to local governments.
B．He dropped out of his law course at Harvard University.
C．He founded his own company--Microsoft Software company.
D．He devised an operating system for IBM.
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