单项选择题

Doctors who prescribe placebos are ______.

A．risking harm to their patients
B．prolonging their patients' agonies
C．curing over 50 percent of serious diseases
D．helping their patients psychologically

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热门试题

单项选择题

What conclusion can be logically drawn from the selection

A．Only poorly educated people seek the advice of quacks.
B．Quacks are motivated by the desire to help mankind.
C．A person's brain can not control the body's pain-tolerance level.
D．The human brain is a powerful and mysterious organ.

单项选择题

What does the word chronic (Sentence 3) mean

A．painful.
B．persistent.
C．minor.
D．infectious.