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(2021·钦州模拟)Antioxidants (抗氧化剂) in coffee are thought to help protect against stroke — but too much must raise blood pressure, which increases the risk, according to Japanese researchers. Similarly, green tea could also be beneficial for preventing the shocking event, caused when a blood vessel (血管) in or serving the brain is blocked.
The study looked at the drinking habits of more than 83,000 healthy adults, aged 45 to 74, whose health was tracked for 13 years on average. They found that people who drank at least one cup of coffee a day had about a 20 percent lower risk of stroke, compared to those who rarely drank it. To get an equal effect, about four cups of green tea a day were required.
All results were adjusted to take into account differences between the groups in age composition, gender, smoking, alcohol, weight, diet and exercise. Dr. Yoshihiro Kokubo, lead author of the study, published in the journal Stroke, said, “The regular action of drinking tea and coffee, largely benefits cardiovascular (心脏血管的) health.”
Their results for coffee were similar to that of “study of studies”， presented at a European conference, which found that one to three cups a day was associated with a 14 percent reduction. For three to six cups, there appeared to be a similar but weaker association, but there was no benefit from drinking six or more.
Exactly why coffee and green tea appears to lower stroke risk is unclear, although antioxidants are thought to be at work. However, the science is by no means cut and dried. Caffeine raises blood pressure, and there have been indications that too much coffee can raise stroke risk because of this.
Dr. Dale Webb, from the Stroke Association said, “We welcome this study which suggests that the benefits of antioxidants in coffee and green tea may offset the potential harm from caffeine.” He thought, the results show higher consumption of green tea and coffee might reduce the risks of stroke. “We would like to see further research to understand these findings，” he said.
语篇解读：本文是一篇说明文。最近的研究表明，喝咖啡或绿茶可以降低中风的风险。但是，过量饮用也会导致血压升高，因此，要适量饮用咖啡或绿茶。
1．What may lead to a stroke according to the first paragraph?
A．Higher blood pressure.
B．Drinking a cup of coffee a day.
C．Blocked blood vessels in the brain.
D．Antioxidants.
解析：选C 细节理解题。根据第一段最后一句可知，同样，绿茶也有助于预防中风，这是由于大脑内部或服务于大脑的血管被阻塞而引起的。由此可知，当大脑中的血管发生堵塞的时候，可能会导致中风。故选C。
2．What can we infer from the passage?
A．The study mainly focuses on middleaged people.
B．Drinking one cup of coffee a day benefits health.
C．Those who seldom drink coffee are healthier.
D．Drinking tea contributes to stroke.
解析：选B 推理判断题。根据第二段第二句可知，他们发现，与很少喝咖啡的人相比，每天至少喝一杯咖啡的人患中风的风险要低20%。由此可推断，每天至少喝一杯咖啡对身体健康有好处。故选B。
3．What is the attitude of Dr. Dale Webb toward this study?
A．He saw more findings of this study unsatisfiedly.
B．He understood the difficulty of this study.
C．He appreciated the achievements of this study.
D．He was disappointed to find no following research.
解析：选C 观点态度题。根据最后一段第一句可知，中风协会的Dale Webb博士说：“我们欢迎这项研究，它表明咖啡和绿茶中的抗氧化剂的好处可以抵消咖啡因的潜在危害。”由此可判断出，Dale Webb医生对这项研究的成果持赞赏态度。故选C。
4．What can be a suitable title for the text?
A．Drinking coffee raises blood pressure
B．Drinking tea reduces stroke
C．Drinking coffee equals drinking tea
D．Drinking tea or coffee properly matters
解析：选D 标题归纳题。根据第一段可知，据日本研究人员称，咖啡中的抗氧化剂被认为有助于预防中风，但喝太多咖啡就会导致血压升高，从而增加中风的风险。同样，绿茶也有助于预防中风。结合本文主要讲述最新的研究表明，适当饮用一定量的咖啡或绿茶能降低患中风的风险。故D选项“适当饮用咖啡或茶很重要”最适合作标题。故选D。
