单项选择题

Arctic explorers may catch colds when ______.

A．they are working in the isolated arctic regions
B．they are writing reports in terribly cold weather
C．they are free from work in the isolated arctic regions
D．they are coming into contact again with the outside world

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热门试题

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

单项选择题

Which of the following CANNOT be inferred from the passage

A．The division of sex-defined roles is completely unacceptable.
B．Women's roles in work are too limited at present.
C．In one society, men might perform what is considered women's duties by another.
D．Some of the women's roles in domestic duties cannot be taken over by men.