题目内容
infection. A study done by University of Michigan, has shown information that seems to be true for the
general population. Babies are the most cold infected group, generally more than six colds in their first
year. Boys have more colds than girls up to the age of three. After three, girls are easier to get infected
with cold than boys, and teenage girls get three colds a year to boys' two. The general cold infections
continue to get less into adults. Elderly people who are in good health have as few as one or two colds
every year. One interesting thing is found among people in their twenties, especially women, who show
a rise in cold infection, because people in this age group are most likely to have young children.
The study has also found that economy plays an important role as well. With more and more income,
the frequency at which colds are reported in the family is getting lower and lower. Families with the lowest
income usually suffer about a third ally forces people to live in rooms more crowded than rooms owned
by richer people, and the crowding usually leads to more chances for the cold virus to travel from person
to person. Low income may also have an effect on our diet. Many scientists believe that a poorer diet
usually leads into more possibilities of cold infection.
B. Teenage boys.
C. Adult women.
D. Elderly people.
B. show a carefullmade study on cold infection
C. report the major reasons leading to cold infection
D. describe all the possible dangers of cold infection
B. People who have lower income enjoy living in crowded rooms.
C. Rich families can have better nutrition and never get infected.
D. People with higher income have fewer chances of infection.
B. families with the highest income will more easily get infected
C. people have lower frequency of infection as they grow older
D. a better diet may help people to fight against cold infection
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