A few cups of green tea each day may help prevent heart disease,Greek researchers said
on Wednesday.A study published in the European Journal of Cardiovascular (心血管的)
Prevention showed further evidence of the potential health benefits from tea already linked
to a reduced risk of a range of cancers and other conditions.
The study showed that green tea improves blood flow and the ability of arteries (动脉)
to relax,said Charalambos Vlachopoulos,an expert at the Athens Medical School in Greece
who worked on the study.
Other studies have shown that black tea also has benefits for cardiovascular health.
The Greek team said they believed green tea might be even better because it had higher
quantities of beneficial substances called flavonoids (类黄酮)-some of which are lost 
in the
oxidation (氧化) process that black tea undergoes.
Flavonoids are also found in cocoa,tomatoes and grapes."A couple of cups a day would
probably be good for people," Vlachopoulos said."This is the first study to show these
effects for green tea."
The researchers gave 14 healthy volunteers either green tea,coffee or hot water and then
measured the function of endothelial cells (内皮细胞)．These cells help relax arteries and
ease blood flow."What is important is these effects are evident within 30 minutes,"
Vlachopoulos said.
The measurements taken 30,90 and 120 minutes following consumption showed an
almost immediate benefit among people who had drunk green tea,he said.While the researchers
looked only at a short-term effect,Vlachopoulos said the team's studies suggest the protection
is long-lasting.
"Green tea is consumed less in the Western world than black tea,but it could be more
beneficial,"he said.
enefits from black tea
阅读快车系列答案科目：高中英语 来源：2013届辽宁省沈阳二中高三第一阶段测试英语试卷（带解析） 题型：阅读理解
London, Dec.17 (Xinhua) “Drivers on London Underground trains have started reading out sayings from great thinkers like Mahatma Gandhi , Frindrich Engels, and Albert Einstein in a bid to cheer up passengers ,” officials said. As well as the usual announcements urging passengers to “mind the steps” and warning of delays, the sayings such as “ an ounce ( 盎司) of action is worth a ton of theory” have taken the place of commercial ad in the underground carriages .
New York, Oct.8 (Xinhua) Once as a famous actor, now the governor of California, Arnold Schwarzenegger wants to abandon textbooks in favor of digital ones. He plans to launch this program in August next year when California’s high-school pupils will have access to online math and science text. But some teachers wonder whether his idea of getting rid of textbooks might end up costing more not less, with digital textbook going for $300.
Amsterdam, Nov.30 (Xinhua) A few cups of coffee a day may not only help to put off the disease—dementia(痴呆) but also can treat it, according to Dr. Arendash, who led the research. After giving mice with memory damage water containing caffeine, he found the mice developed better memories and quick thinking. The reason is that caffeine is a safe drug for most people. It easily enters the brain and directly affects the disease process. He suggested people should drink five eight–ounce cups of ordinary coffee, two cups of strong ‘coffee shop’ coffee, 14 cups of tea, or 20 cola drinks to get the same amount of 500 milligrams of caffeine.
【小题1】What’s the purpose of putting up sayings on the underground carriages in London?
| A．to help passengers to kill time. |
| B．to encourage passengers to learn. |
| C．to lift the spirits of passengers. |
| D．to make money as a commercial ad. |
| A．digital textbooks will replace traditional textbooks. |
| B．online math is already available to high-school pupils . |
| C．digital textbooks are convenient to carry anywhere. |
| D．Not all the teachers support their governor’s idea. |
| A．The more coffee you drink, the less chance there will be for dementia. |
| B．Caffeine can make mice become more and more intelligent and energetic. |
| C．Caffeine can affect the process of the disease—dementia and treat it. |
| D．Caffeine is a safe drug for all the people for everyday use so enjoy it. |
查看答案和解析>>
科目：高中英语 来源：2012-2013学年安徽泗县二中高二下学期期末考试英语卷（带解析） 题型：阅读理解
London, Dec.17 (Xinhua) “Drivers on London Underground trains have started reading out sayings from great thinkers like Mahatma Gandhi , Frindrich Engels, and Albert Einstein in a bid to cheer up passengers ,” officials said. As well as the usual announcements urging passengers to “mind the steps” and warning of delays, the sayings such as “ an ounce ( 盎司) of action is worth a ton of theory” have taken the place of commercial ad in the underground carriages .
New York, Oct.8 (Xinhua) Once as a famous actor, now the governor of California, Arnold Schwarzenegger wants to abandon textbooks in favor of digital ones. He plans to launch this program in August next year when California’s high-school pupils will have access to online math and science text. But some teachers wonder whether his idea of getting rid of textbooks might end up costing more not less, with digital textbook going for $300.
Amsterdam, Nov.30 (Xinhua) A few cups of coffee a day may not only help to put off the disease—dementia(痴呆) but also can treat it, according to Dr. Arendash, who led the research. After giving mice with memory damage water containing caffeine, he found the mice developed better memories and quick thinking. The reason is that caffeine is a safe drug for most people. It easily enters the brain and directly affects the disease process. He suggested people should drink five eight–ounce cups of ordinary coffee, two cups of strong ‘coffee shop’ coffee, 14 cups of tea, or 20 cola drinks to get the same amount of 500 milligrams of caffeine.
【小题1】What’s the purpose of putting up sayings on the underground carriages in London?
| A．to help passengers to kill time. |
| B．to encourage passengers to learn. |
| C．to lift the spirits of passengers. |
| D．to make money as a commercial ad. |
| A．digital textbooks will replace traditional textbooks. |
| B．online math is already available to high-school pupils . |
| C．digital textbooks are convenient to carry anywhere. |
| D．Not all the teachers support their governor’s idea. |
| A．The more coffee you drink, the less chance there will be for dementia. |
| B．Caffeine can make mice become more and more intelligent and energetic. |
| C．Caffeine can affect the process of the disease—dementia and treat it. |
| D．Caffeine is a safe drug for all the people for everyday use so enjoy it. |
查看答案和解析>>
科目：高中英语 来源：2014届安徽泗县二中高二下学期期末考试英语卷（解析版） 题型：阅读理解
London, Dec.17 (Xinhua) “Drivers on London Underground trains have started reading out sayings from great thinkers like Mahatma Gandhi , Frindrich Engels, and Albert Einstein in a bid to cheer up passengers ,” officials said. As well as the usual announcements urging passengers to “mind the steps” and warning of delays, the sayings such as “ an ounce ( 盎司) of action is worth a ton of theory” have taken the place of commercial ad in the underground carriages .
New York, Oct.8 (Xinhua) Once as a famous actor, now the governor of California, Arnold Schwarzenegger wants to abandon textbooks in favor of digital ones. He plans to launch this program in August next year when California’s high-school pupils will have access to online math and science text. But some teachers wonder whether his idea of getting rid of textbooks might end up costing more not less, with digital textbook going for $300.
Amsterdam, Nov.30 (Xinhua) A few cups of coffee a day may not only help to put off the disease—dementia(痴呆) but also can treat it, according to Dr. Arendash, who led the research. After giving mice with memory damage water containing caffeine, he found the mice developed better memories and quick thinking. The reason is that caffeine is a safe drug for most people. It easily enters the brain and directly affects the disease process. He suggested people should drink five eight–ounce cups of ordinary coffee, two cups of strong ‘coffee shop’ coffee, 14 cups of tea, or 20 cola drinks to get the same amount of 500 milligrams of caffeine.
1.What’s the purpose of putting up sayings on the underground carriages in London?
A．to help passengers to kill time.
B．to encourage passengers to learn.
C．to lift the spirits of passengers.
D．to make money as a commercial ad.
2.What can we conclude from the second news?
A．digital textbooks will replace traditional textbooks.
B．online math is already available to high-school pupils .
C．digital textbooks are convenient to carry anywhere.
D．Not all the teachers support their governor’s idea.
3.Which of the following statements is true from the third news?
A．The more coffee you drink, the less chance there will be for dementia.
B．Caffeine can make mice become more and more intelligent and energetic.
C．Caffeine can affect the process of the disease—dementia and treat it.
D．Caffeine is a safe drug for all the people for everyday use so enjoy it.
查看答案和解析>>
科目：高中英语 来源：2012-2013学年辽宁省高三第一阶段测试英语试卷（解析版） 题型：阅读理解
London, Dec.17 (Xinhua) “Drivers on London Underground trains have started reading out sayings from great thinkers like Mahatma Gandhi , Frindrich Engels, and Albert Einstein in a bid to cheer up passengers ,” officials said. As well as the usual announcements urging passengers to “mind the steps” and warning of delays, the sayings such as “ an ounce ( 盎司) of action is worth a ton of theory” have taken the place of commercial ad in the underground carriages .
New York, Oct.8 (Xinhua) Once as a famous actor, now the governor of California, Arnold Schwarzenegger wants to abandon textbooks in favor of digital ones. He plans to launch this program in August next year when California’s high-school pupils will have access to online math and science text. But some teachers wonder whether his idea of getting rid of textbooks might end up costing more not less, with digital textbook going for $300.
Amsterdam, Nov.30 (Xinhua) A few cups of coffee a day may not only help to put off the disease—dementia(痴呆) but also can treat it, according to Dr. Arendash, who led the research. After giving mice with memory damage water containing caffeine, he found the mice developed better memories and quick thinking. The reason is that caffeine is a safe drug for most people. It easily enters the brain and directly affects the disease process. He suggested people should drink five eight–ounce cups of ordinary coffee, two cups of strong ‘coffee shop’ coffee, 14 cups of tea, or 20 cola drinks to get the same amount of 500 milligrams of caffeine.
1.What’s the purpose of putting up sayings on the underground carriages in London?
A．to help passengers to kill time.
B．to encourage passengers to learn.
C．to lift the spirits of passengers.
D．to make money as a commercial ad.
2.What can we conclude from the second news?
A．digital textbooks will replace traditional textbooks.
B．online math is already available to high-school pupils .
C．digital textbooks are convenient to carry anywhere.
D．Not all the teachers support their governor’s idea.
3.Which of the following statements is true from the third news?
A．The more coffee you drink, the less chance there will be for dementia.
B．Caffeine can make mice become more and more intelligent and energetic.
C．Caffeine can affect the process of the disease—dementia and treat it.
D．Caffeine is a safe drug for all the people for everyday use so enjoy it.
查看答案和解析>>
科目：高中英语 来源： 题型：阅读理解
London, Dec.17 (Xinhua) “Drivers on London Underground trains have started reading out sayings from great thinkers like Mahatma Gandhi , Frindrich Engels, and Albert Einstein in a bid to cheer up passengers ,” officials said. As well as the usual announcements urging passengers to “mind the steps” and warning of delays, the sayings such as “ an ounce ( 盎司) of action is worth a ton of theory” have taken the place of commercial ad in the underground carriages .
New York, Oct.8 (Xinhua) Once as a famous actor, now the governor of California, Arnold Schwarzenegger wants to abandon textbooks in favor of digital ones. He plans to launch this program in August next year when California’s high-school pupils will have access to online math and science text. But some teachers wonder whether his idea of getting rid of textbooks might end up costing more not less, with digital textbook going for $300.
Amsterdam, Nov.30 (Xinhua) A few cups of coffee a day may not only help to put off the disease—dementia(痴呆) but also can treat it, according to Dr. Arendash, who led the research. After giving mice with memory damage water containing caffeine, he found the mice developed better memories and quick thinking. The reason is that caffeine is a safe drug for most people. It easily enters the brain and directly affects the disease process. He suggested people should drink five eight–ounce cups of ordinary coffee, two cups of strong ‘coffee shop’ coffee, 14 cups of tea, or 20 cola drinks to get the same amount of 500 milligrams of caffeine.
55．What’s the purpose of putting up sayings on the underground carriages in London?
A. to help passengers to kill time.
B. to encourage passengers to learn.
C. to lift the spirits of passengers.
D. to make money as a commercial ad.
56．What can we conclude from the second news?
A. digital textbooks will replace traditional textbooks.
B. online math is already available to high-school pupils .
C. digital textbooks are convenient to carry anywhere.
D. Not all the teachers support their governor’s idea.
57．Which of the following statements is true from the third news?
A. The more coffee you drink, the less chance there will be for dementia.
B. Caffeine can make mice become more and more intelligent and energetic.
C. Caffeine can affect the process of the disease—dementia and treat it.
D. Caffeine is a safe drug for all the people for everyday use so enjoy it.
查看答案和解析>>
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