单项选择题

A．He doesn’t understand his staff.
B．His computer doesn’t work properly.
C．He doesn’ t know how to apply computer theory.
D．He is unable to add the figures.
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单项选择题
A．On April 26, 1611.B．On April 23, 1611.C．On April 26, 1616.D．On April 23, 1616.
A．On April 26, 1611.
B．On April 23, 1611.
C．On April 26, 1616.
D．On April 23, 1616.
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