单项选择题

According to the passage, there are more myths about the common cold than any other human disease because ______.

A．it spreads more quickly
B．it is the most widespread illness
C．the climate of the world is getting colder and colder
D．few people can catch colds
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单项选择题
During the First World War, soldiers who spent long periods in cold and wet trenches ______.
A．often caught colds
B．never caught colds
C．did not show increased tendency to catch colds
D．did not increase in number
单项选择题
Which of the following is NOT true
A．The Eskimos seldom suffer from colds.
B．Colds are not caused by cold.
C．People suffer from colds just because they like to stay indoors.
D．A person may catch a cold by touching someone who already has one.
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