2. 外语
  3. Women who drank three or more cups of coffee a day were 30 percent less likely to have memory decline at age 65 than whose who d

Women who drank three or more cups of coffee a day were 30 percent less likely to have memory decline at age 65 than whose who d

admin2016-04-30  55
问题     Women who drank three or more cups of coffee a day were 30 percent less likely to have memory decline at age 65 than whose who drank one cup or less daily. And the benefit increased with age. Women over age 80 who drank three or more cups of coffee a day were about 70 percent less likely to have 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 needed to get the same caffeine boost. "Count roughly two cups of tea for a cup of coffee," said study leader 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 have found a benefit to males.
    How might caffeine help ward off cognitive decline? "It is a cognitive stimulant," said Ritchie. 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 normal aging."
    Ritchie said she wasn’t sure why men in the study didn’t benefit from caffeine. "Our hypothesis is that either women metabolize caffeine differently than men, or there may be an interaction of the caffeine with the sex hormones, the estrogen-progesterone balance," she said.
    The French study confirms previous research, said William Scott, professor of medicine at the University of Miami Miller School of Medicine, who has researched caffeine’s beneficial effects against Parkinson’s disease, also a neurodegenerative disorder.
    As for caffeine only protecting women, Scott noted that just 2,800 of the 7,000 study participants 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 healthy men 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 the least signs of decline.
    Both Scott and Ritchie agreed that more study is needed. Ritchie’s research will next look at the relationship between caffeine and Alzheimer’s.
What is true about caffeinated tea?
选项 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 the same amount of caffeine as coffee.
答案A
解析 第2段首句中的the same effect与上一段提到的benefit所指相同，故本句表明含咖啡因的茶和咖啡以同样的机制影响女性的记忆衰退程度，选A。第2段首句中although引出的让步状语从句表明咖啡的作用比茶明显，因此B不正确，这样看来，D(茶和咖啡含有同量的咖啡因)也是不正确的；C针对的是增强记忆，而非其衰退程度，不符合文章的论点，也不正确。
转载请注明原文地址:https://kaotiyun.com/show/F8G7777K
0

大学英语六级

相关试题推荐
随机试题
最新回复(0)