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.
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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.
单项选择题
How does the medical profession regard the bypass operation
A．Many doctors believe it to be the best answer for reducing heart disease.
B．Many doctors think it should be used to prevent clogged arteries.
C．Many doctors think the sooner it is used for a patient with early arterial disease, the more effective it is.
D．Many doctors question the advisability of its use where only one artery is affected.
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