单项选择题

The word "fatal" in paragraph 1, sentence 1 is closest in meaning to ______.

A．harmful
B．lethal
C．painful
D．disease-causing
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单项选择题
The most successful treatment described in the passage was a serum prepared from ______.
A．the blood of patients who have been stung
B．poison extracted from bees
C．crushed bodies of bees
D．a placebo and a crushed-body extract
单项选择题
According to the researchers, the traditional treatment for bee stings is ______.
A．widespread
B．extremely harmful
C．almost futile
D．sensitizing
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