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由于微电子技术和微型机械学的不断发展，已经出现了能够进行各种脑部和骨科手术的机器人系统，它们的精确程度可以达到亚毫米的程......

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A．She was not a productive poet.B．She saw many of her poems published.C．She was not a sociable person.D．She had contact only with a few poets.
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C．She was not a sociable person.
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A．Doctor and patient.B．Teacher and student.C．Husband and wife.D．Shopkeeper and customer.
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B．Teacher and student.
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