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英语六级听力备考:Factors for Colds
来源:社科赛斯考研网 | 2021-08-17 16:50:36
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英语四六级听力对于多数考生来说是一个难点,笔试部分备考很充足,但是听力会丢掉很多分,小编整理了的英语四六级听力相关的备考内容,先阅读一遍,再进行听力练习,一起来提分吧!

1.Who are the most cold-ridden group? ...
 
2.Why do women in their twenties show a rise in cold infections? Because they are most likely to ...
 
3.What else, besides age, plays an important role in susceptibility to colds? ...
 
4.What kind of families suffer more colds? Families with ...
 
A critical factor that plays a part in susceptibility to colds is age. A study, done by the University of Michigan School of Public Health,revealed particulars that seem to hold true for the general population. Infants are the most cold-ridden group,averaging more than six colds in their first years. Boys have more colds than girls up to age three. After the age of three,girls are more susceptible than boys,and teenage girls average three colds a year to boys’ two. The general incidence of colds continues to decline into maturity. Elderly people who are in good health have as few as one or two colds annually. One exception is found among people in their twenties,especially women,who show a rise in cold infections,because people in this age group are most likely to have young children. Adults who delay having children until their thirties and forties experience the same sudden increase in cold infections. The study also found that economics plays an important role. As income increases,the frequency at which colds are reported in the family decreases. Families with the lowest income suffer about a third more colds than families at the upper end. Lower income generally forces people to live in more cramped quarters than those typically occupied by wealthier people,and crowding increases the opportunities for the cold virus to travel from person to person. Low income may also adversely influence diet. The degree to which poor nutrition affects susceptibility to colds is not yet clearly established, but an inadequate diet is suspected of lowering resistance generally.

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