2020英语专四阅读练习100篇附答案:饮食健康

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　　Women who drank three or more cups of coffee aday were 30 percent less likely to have memorydecline at age 65 than whose who drank one cup orless daily. And the benefit increased with age. Women over age 80 who drank three or more cupsof coffee a day were about 70 percent less likely tohave memory decline than those who drank one cup or less. the researchers said.

　　Caffeinated tea had the same effect in the women. the study found, although more was neededto get the same caffeine boost. "Count roughly two cups of tea for a cup of coffee," said studyleader Karen Ritchie of INSERM, the French National Institute for Health and Medical Research.

　　But the researchers didn't find a similarly protective effect in men, although other studies havefound a benefit to males.

　　How might caffeine help ward off cognitive decline? "It is a cognitive stimulant." saidRitchie. It also helps to reduce levels of the protein called beta amyloid in the brain. she said. "whose accumulation is responsible for Alzheimer's disease but which also occurs in normalaging."

　　Ritchie said she wasn't sure why men in the study didn't benefit from caffeine. "Ourhypothesis is that either women metabolize caffeine differently than men, or there may be aninteraction of the caffeine with the sex hormones.the estrogen-progesterone balance," shesaid.

　　The French study confirms previous research, said William Scott. professor of medicine at theUniversity of Miami Miller School of Medicine. who has researched caffeine's beneficial effectsagainst Parkinson's disease, also a neurodegenerative disorder.

　　As for caffeine only protecting women, Scott noted that just 2,800 of the 7,000 studyparticipants were men. and the results might have differed if more men were included.

　　A study published in February in the European Journal of Clinical Nutrition looked at 676 healthymen and found that regular coffee drinkers had a lower rate of cognitive decline over a 10-year follow-up than those who didn't drink coffee. Those who drank three cups daily had theleast signs of decline.

　　Both Scott and Ritchie agreed that more study is needed. Ritchie's research will next look at therelationship between caffeine and Alzheimer's.

　　1. As it is indicated in the l st paragraph, howdoes coffee influence women’s memory?

　　A) The older the woman was. the more remarkableher memory was.

　　B) The more coffee the woman drank, the moreslowly her memory declined.

　　C) The older the woman was, the more slowly her memory declined.

　　D) The more coffee the woman drank. the more remarkable her memory was.

　　2. What is true about caffeinated tea?

　　A) It affected women’s memory in the same manner as coffee.

　　B) It influenced women’s memory as effectively as coffee.

　　C) It boosted women’s memory in the same rate as coffee.

　　D) It contained che same amount of caffeine as coffee.

　　3. According to Ritchie. Alzheimer's disease is resulted from________________.

　　A) the lack of caffeine in the brain

　　B) the accumulation of beta amyloid

　　C)high level of proteins in the brain

　　D) abnormal metabolism in normal aging

　　4. William Scott would most probably agree that caffeine helped_______________.

　　A) reduce the risk of Alzheimer's disease

　　B) retard the process of cognitive decline

　　C) balance the production of female hormones

　　D) protect both men and women from diseases

　　5. What was the author's attitude towards the research of caffeine's beneficial effecton men7

　　A) Doubtful.

　　B) Convinced.

　　C) Matter-of-fact.

　　D) Cautious.