单项选择题

What is the major barrier to telesurgery

A．Distance
B．Advanced technology
C．Delay
D．Medical facilities
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单项选择题
The title that best expresses the main idea is ______.
A．How The Second Revolution in Surgery Comes Out
B．The Telesurgery Revolution
C．A Patient Was Saved
D．Dream Comes True
单项选择题
How many companies shared the costs of constructing the pipeline
A．3
B．4
C．8
D．12
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