单项选择题

The word "malignant" in line 7, paragraph 2 could best be replaced by ______.

A．harmless
B．deadly
C．vindictive
D．repulsive
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单项选择题
In order to cope with most illnesses, the author thinks that people will have to do all of the following except ______.
A．find more curative rays
B．produce more curative drugs
C．develop more powerful diagnostic instruments
D．see through five inches of living flesh at least
单项选择题
It can be inferred from the opening sentence of the first paragraph that medical workers
A．have contributed little to the diagnosis and treatment of disease
B．have their expectations too high
C．have made remarkable progress in the diagnosis and treatment of disease
D．have developed their potential to the full
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