题目

阅读理解 For centuries, tea has been used for far more than quenching thirst. Around the world people drink it to relax, reinvigorate and relieve, and it's something we need now more than ever. Even in the United States, a long coffee-dominated country, tea drinking is growing in popularity, with the country consuming 0. 4 kilograms (14 ounces) of tea leaves per person a year compared with 0. 36 kilograms(12. 7 ounces) in 2007 according to the United Nations, as people switch away from soda， milk and fruit drinks. Scientists are beginning to look into just how tea might affect mood and cognition. Specifically, they're investigating whether its relaxing and refreshing effects are a direct biological outcome of the compounds in tea or whether they come from the context in which the drink is consumed—preparing your tea, choosing your favorite cup and sitting down for a brief break from the world. Or both. Drinking green tea has been found to improve brain function in healthy people, said Stefan Borgward, chair and director of the department of psychiatry and psychotherapy at the University of Lubeck, Germany. In a 2014 study, he gave one or two cups of green tea to 12 healthy volunteers and imaged their brains to analyze changes in connectivity inside certain brain regions. "We noticed an increased connectivity in regions of the brain associated with working memory," he said via email. And a 2017 review of more than 100 studies he coauthored found that green tea can impact the brain in three ways: It can influence psychopathological state such as reducing anxiety; cognition by benefiting memory and attention; and brain function, specifically memory. That review concluded that "it would be desirable" for more Westerners to consume at least 100 milliliters (3. 3 fluid ounces) of green tea each day "to protect neurocognitive function. " However, Borgward, cautioned that the effects aren't large, and the evidence is mainly provided by small-scale studies. （1） How does the author introduce the tendency of drinking in the U. S.? A . By showing examples. B . By explaining reasons. C . By making a comparison. D . By checking existing facts. （2） What is paragraph 3 mainly about? A . Scientists are looking into why tea makes people relaxed and refreshed. B . The context in which the drink is consumed is very important. C . People's relaxation is the direct biological outcome of the ingredients in tea. D . Preparing tea, choosing a cup and sitting down for a brief rest is amazing. （3） What can we conclude from Stefan's research? A . Tea is a cure for a neurocognitive disease. B . Green tea is particularly beneficial to our memory. C . Drinking tea every day can prevent us from getting ill. D . Westerners drink less than 100 milliliters of green tea. （4） What is the researcher's attitude towards the finding? A . Supportive B . Doubtful. C . Unclear. D . Objective. 答案： C A B D

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