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12.Age plays a major part in people who are infected with cold,ie,in people who suffer from cold 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.

34.Which of the age groups has the highest frequency of cold infection?A
A.Small babies.
B.Teenage boys.
C.Adult women.
D.Elderly people.
35.The purpose of writing this passage is toB.
A.give the readers some tips to avoid cold infection
B.show a carefulmade study on cold infection
C.report the major reasons leading to cold infection
D.describe all the possible dangers of cold infection
36.How does economy play an important role in cold infection?D
A.Families with lower income suffer less from 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.
37.From the passage we can infer thatD.
A.age is the only important factor that connects with colds
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.

分析 本文屬于說明文閱讀,作者通過這篇文章主要向我們描述了最新的一項調查.感冒與年齡和收入多寡密切相關.

解答 34.A.細節(jié)理解題.由第一段第三句話"Babies are the most cold infected group,generally more than six colds in their first year可知,小兒最易受感冒侵襲;故選A.
35.B.推理判斷題.根據(jù)文章With more and more income,the frequency at which colds are reported in the family is getting lower and lower可知全文向我們客觀介紹了一項調查結果:感冒與年齡和收入多少密切相關;故選B.
36.D.細節(jié)理解題.由第二段第二句話With more and more income,the frequency at which colds are reported in the family is getting lower and lower可知收入較低的人喜歡住在擁擠的房間里;故選D.
37.D.推理判斷題.由第二段最后一句話Many scientists believe that a poorer diet usually leads into more possibilities of cold infection可知,良好的飲食有助于戰(zhàn)勝感冒的侵襲;故選D.

點評 考察學生的細節(jié)理解和推理判斷能力,做細節(jié)理解題時一定要找到文章中的原句,和題干進行比較,再做出正確的選擇.在做推理判斷題不要以個人的主觀想象代替文章的事實,要根據(jù)文章事實進行合乎邏輯的推理判斷.

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