单项选择题

What is a coronary bypass

A．An operation to bypass the heart.
B．An operation to replace a disabled artery with another artery.
C．An operation to construct a passage around a blocked artery.
D．An operation to take care of faulty heart action.

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热门试题

单项选择题

Under what conditions should the bypass operation be performed

A．When a general practitioner is available to perform it.
B．When there is room in the hospital emergency ward for the patient.
C．When the patient can be expected to show favorable results.
D．When the doctor recommends against it.

单项选择题

Which of the following is true

A．Events with strong meaning are always stored in the short-term memory.
B．Most of what we see and do belong to the short-term memory.
C．Short-term memories are made up of inactive electrical circuits.
D．Long-term memories consist of active electrical circuits.