单项选择题

Under the direstion of the surgeon，the instrumentation can be （）.

A.controlling
B.controls
C.controlled
D.control

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单项选择题

In may require long period of mechanical ventilation for （）.

A.surviving
B.survival
C.survive
D.survived

单项选择题

一I’m leaving for London tomorrow，Joss.一（）。

A.Take your time.
B.That’s it.
C.All the best!.
D.It doesn’t matter.

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