河南省豫西北教研联盟（洛平许济）2024-2025学年高三下学期第二次质量检测，高中\高三\河南省\豫西北教研联盟（洛平许济）\2024-2025学年下\英语
Smell is probably our most underappreciated sense.But a loss of smell has been linked to health problems such as depression and cognitive decline.And mounting evidence shows that smelling training may help prevent that decline. Now,a team of researchers led by Michael Leon,has successfully boosted cognitive performance by exposing people to smells while they sleep.Twenty participants-all older than 60 and generally healthy-received six months of ovemight smell enrichment,and all significantly improved their ability to recall lists of words. The scientists are unsure about how the overnight smell may have produced this result.But Leon notes that the neurons(t神经元)involved in our smelling have“direct superhighway access"to brain regions related to memory and emotion.In participants who received the treatment,the study authors observed the physical changes in a brain structure that connects the memory and emotional centers-a pathway that often deteriorates as people age. Previous successful attempts to boost memory with smell typically relied on complicated interventions with multiple exposures a day.If the nighttime treatment proves successful in large tests,it promises to be a convenient way to achieve similar effects,says Vidya Kamath,a neuropsychologist at the Johns Hopkins University School of Medicine. Larger experiments may also help answer some remaining questions.The new study used widely available essential oils,but researchers aren't sure if just any smell would get the same results.They don't know how much an essential oil's qualities affect the cognitive gains.It is also unclear how much novelty plays a role,says Michael Pieniak,a psychology researcher at the University of Wroclaw in Poland who has studied smelling training.Overnight smells could be a strong line for further study.But Pieniak cautions fans of smell training from running to try it.The results are promising,but just a start and should be repeated with more particular participants. 28.What's Leon's research intended to check? A.If it can enhance cognitive ability. B.If it can help cure sleeplessness. C.If it can recover the sense of smell. D.If it can improve physical health. 29.What happens to the participants in the experiment? A.They suffer from depression. B.They remember smell far better. C.They become more emotional. D.They have changes in their brains. 30.What does the underlined word "deteriorates"in paragraph 3 mean? A.Remains stable. B.Recovers gradually. C.Becomes worse. D.Disappears completely. 31.What is Michael Pieniak's attitude towards the findings? A.Cautious. B.Optimistic. C.Critical. D.Enthusiastic.
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