单项选择题

A．Fleming, Florey and Chain.
B．The Nobel Prize Winners.
C．Fleming and His Brother.
D．The Life of Alexander Fleming.
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填空题
B
单项选择题
A．Shortly after 5:00 p. m.B．Shortly after 3:00 p. m.C．Shortly before 3:00 p. m.D．Shortly before 5:00 p. m.
A．Shortly after 5:00 p. m.
B．Shortly after 3:00 p. m.
C．Shortly before 3:00 p. m.
D．Shortly before 5:00 p. m.
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