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1、Unit 5 First aid .阅读理解A体裁：说明文话题：医学词数：271时间：6As cold season approaches，many Americans will buy a lot of vitamin C and echinacea(紫锥菊)in order to avoid catching a cold.But paying attention to an old piece of advice about having enough sleep every day might be more important.Research suggests that poor
2、sleep can increase the chance to colds.Studies have shown that poor sleep and a chance to catch a cold go hand in hand，and scientists think sleep plays an important role in the bodys defenses.In a recent study for The Archives of Internal Medicine，scientists followed 153 men and women for two weeks，
3、keeping an eye on their quality and duration(持续性)of sleep.Then，during a fiveday period，they exposed them to cold viruses.Those who slept an average of fewer than seven hours a night，it turned out，were three times as likely to get sick as those who averaged at least eight hours a night.Sleep and immu
4、nity(免疫)，it seems，are tightly linked.Studies have found that mammals that require the most sleep also produce greater levels of diseasefighting white blood cellsbut not red blood cells，even though both are produced in bone marrow(骨髓) and stem from the same precursor.And researchers at the Max Planck
5、 Institute for Evolutionary Anthropology have shown that species that sleep more have greater resistance against pathogens(病原体)“People who have longer sleep every night，” the Planck scientists wrote，“appear to be able to strengthen their immune systems and be better protected.”【语篇解读】随着天气变冷，越来越多的人将会感
6、冒。如何才能在寒冷的季节避免感冒的侵袭？研究表明，充足的睡眠将会保护你不受感冒的威胁。1Which of the following can be the best title of the passage?AThe Best Way to Avoid Catching a Cold in Winter.BThe Relationship between Sleep and Immunity.CLack of Sleep Increases the Risk of Catching a Cold.DHow to Strengthen Your Immune Systems?答案C主旨大意题。通
7、读全文可知本文主要讲述的是充足的睡眠可以减少得感冒的机会，也就是说缺乏睡眠会增加得感冒的风险。故C可作文章的标题。2From the passage we can infer that _Avitamin C and echinacea can help resist coldsBthe longer you sleep，the healthier you will beCpeople didnt know the relationship between sleep and colds beforeDpeoples immunity can be gained mostly from sle
8、ep答案A推理判断题。根据短文第一句可知答案。B项没有依据；C项根据But paying attention to an old piece of advice about having enough sleep every day might be more important可排除；D项没有依据。3We can draw a conclusion from the third paragraph that _Amost people sleep less than seven hours a dayBsleep less may easily lead to some illnessesC
9、one should sleep at least seven hours a dayDsleep is the best way to treat illnesses答案B细节理解题。根据第三段内容可知，从这项研究中可以得出结论：睡眠少很容易导致疾病。4How does the author express his idea?ABy using the results of studies.BBy comparing some numbers.CBy telling some interesting stories.DBy referring to some theories.答案A细节理解
10、题。作者为了说明睡眠不足可导致感冒的风险，多次提到了研究的结果。故答案为A。B体裁：记叙文话题：人物与医学词数：303时间：6Christian Poincheval is a 65yearold French inventor who has dedicated the past eight years of his life to making farts(屁) smell better.He claims that his productLutin Malinwhich has another name “crafty imp”are pills that can help ease d
11、igestion and change the smell of farts.Whats more，the pills can change smelly farts into smelling like roses or violets.Poincheval claims that his newest invention，just in time for the holidays，makes farts smell like chocolate.According to Poinchevals website，the idea for inventing the pills apparen
12、tly came from a dinner with friends during which nobody could stop farting.“We were at table with friends and after a hearty meal，almost all of us farted.We almost suffocated(窒息) as our farts were really smelly，” Poincheval writes in his page.“The winds were not very pleasant for our fellow diners.S
13、o I knew it was time for me to do something.I cant prevent people from farting，but I can change the smell of the farts.”That horrific dinner，in which a group of several adults seemingly farted uncontrollably in a public space，inspired Poincheval to try his best to find a way to solve the problem of
14、flatulence(肠胃胀气) completely.He claims the pills are made from organic materials like blueberries，fennel and seaweed and that he sells “several hundred bottles a month.”Poincheval told The Telegraph that he had many customers，especially around the holidays.“I sold about 1，500 bottles of the pills thi
15、s Christmas.People love the pills and Im very happy because I help them in my own way，” he said.A bottle of 60 pills sells for 9.99，or $12.50，which seems shockingly low for something that makes terrible things smell like good things.5The pills that Christian Poincheval invented can _Ahelp treat some diseasesBmake people live longerChelp flowers grow betterDmake farts smell better答案D细节理解题。根据短文第一段中的who has dedicated the past eight years of his life to making farts(屁) smell better.可知，Christian Poincheval发明的药丸能使屁闻起来好闻一些。故选D。6Christian Poincheval had the idea of inventing the pill
