全国100所名校最新高考冲刺卷英语2023届Y1

2023-11-15 05:08:38 25

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11.Which of the following helps a person to live longer?An Ageless Question:When Is Someone "Old"?A.As much exercise as possible.B.Losing weight.What does "old"really mean these days?This isn't a meaningless question-not only does theC.Studying history.D.Knowing more about hospitals.definition of "old"have a profound impact on how we feel about ourselves not to mention how others viewDus),it also matters to policymakers determining how to plan for the aging population.Researchers reported a blind man who had received a gene of a light-sensing protein can now see andThe United Nations historically has defined older people as people aged 60 and over (sometimes 65).touch objects with the help of special goggles(护目镜).It didn't matter whether you lived in the United States,China or Senegal,even though life expectancy wasHis vision gains are modest-he cannot see colors or distinguish faces or letters.But if the treatmentquite different in each of those countries.Everyone became old at 60.helps other study participants,it may offer advantages over other vision technologies for severely blindResearchers Sergei Scherbov and Warren Sanderson,who study aging,are suggesting overturning thepeople.For scientists,the result is a milestone:the first published report of using a relatively newpervious definition of "old".Instead,they talk about "prospective age",which looks to the future.technology called optogenetics(光遗传学)to treat a disease in people..“It'not the kind of vision peopleEveryone with the same prospective age has the same expected remaining years of life.dream of,but it's a big step,said Jean Bennett of the University of Pennsylvania.Scherbov explains that "young"and"old"are relative concepts,and their common reference point isOptogenetics uses light to control neurons.Scientists add the gene to a light-sensitive protein called anlife expectancy.It makes sense that "old"would vary between nations,especially between more developedopsin (from algae or bacteria and then shine light on the cell to cause the opsin to change shape,and less developed countries,with differences in education,death rates,access to health care and lifewhich switches the neuron's activity on or off.Since it was developed nearly 20 years ago,optogenetics hasexpectancy.mostly been used as a tool to treat animals'brain diseases.But researchers hope it can one day treatBut who is "old"also varies widely between individuals.The point,says Scherbov,is that personalage is dependent on our "characteristics"-understanding abilities,disability,health history and evendiseases such as Parkinson's disease and blindness."The eye is the simplest place to start because it is small and easy to access,"said Botond Roska,aeducation levels.Those with more education tend to never smoke,exercise more frequently,have betterdiets and have regular checkups-and,therefore,live longer,meaning the beginning of their old agephysician-scientist at the University of Basel.comes later,says Scherbov.The patients in the study have lost the retinal photoreceptor cells(视网膜感光细胞)that use human8.What is the first paragraph mainly about?opsins to turn light into electrical signals relayed to the brain.But their eyes still have the cells that routeA.How we feel about ourselves.these signals to the brain via the optic nerve.That means the patients could potentially gain vision by givingB.How others view us.these cells a new kind of opsin.C.The importance of the definition of“old”12.What can we know about the result from paragraph 2?D.The plan for the aging population.A.It has limitations but is important.9.What does the underlined phrase "prospective age"in paragraph 3 refer to according to the text?B.It can be used to treat deaf people now.A.The expected remaining years of one's life.C.It is the conclusion of previous research.B.The beginning of one's old age.D.It is a way to help people become modest.C.The differences in our“characteristics'”.13.Which is the key to the treatment?D.The age at which the elderly enjoy life.A.New goggles.B.Suitable opsins.10.What common ground does Scherbov think“young'”and“old”have?C.Natural proteins.D.Retinal photoreceptor cellsA.The upper limit.B.The specific proportion14.What can we infer about optogenetics from the text?C.The living environment.D.The reference point.A.It can benefit both humans and animals.英语1314普通高等学校招生模拟考试诊断性测验卷（二】

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