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A．The Southeast.
B．The Northwest.
C．The Southwest.
D．The central part of the state.
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单项选择题
A．Liston was claimed winner by decision after only two rounds.B．Ali knocked Liston out in the seventh round.C．Liston was unable to answer the bell in the ninth round.D．Ali was proclaimed champion after six rounds.
A．Liston was claimed winner by decision after only two rounds.
B．Ali knocked Liston out in the seventh round.
C．Liston was unable to answer the bell in the ninth round.
D．Ali was proclaimed champion after six rounds.
单项选择题
What is the chief advantage of the virtual reality techniques when used in microsurgery
A．The medical students and surgeons can use it to practise simulated surgical operations as if operating on a real patient.
B．Medical students and surgeons can do any operations without considering their consequences.
C．It helps to do operations on human eyes extremely accurately.
D．It allows surgeons and their students to set their imagination free.
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