美国英语听力80篇2 Lesson35

[00:04.44]New studies say that eating chocolate may be good for your heart.
[00:10.48]Research shows that eating chocolate may reduce the chance of developing heart disease
[00:17.32]by helping¹ blood vessels³ remain clear and open.
[00:21.79]Chocolate is produced from beans that contain large amounts of natural substances called flavonoids.
[00:31.09]Flavonoids have been shown to protect the heart and the blood vessels from damage.
[00:37.41]Recent studies have linked foods that contain flavonoid with a reduced chance of developing heart disease.
[00:46.13]These foods include tea, red wine, apples, peanuts and chocolate.
[00:52.90]Research has shown that forty grams of milk chocolate contain about 400 milligrams of flavonoid.
[01:01.41]That is about the same amount in a glass of red wine.
[01:06.51]The same amount of dark chocolate contains more than 800 milligrams of flavonoid.
[01:12.83]That is about the same amount as a cup of black tea.
[01:17.40]A study by researchers at the University of Scranton in Pennsylvania
[01:23.38]found that the flavonoid in chocolate are more powerful
[01:27.56]than some vitamins in limiting the damage from fats in the blood.
[01:32.71]A German study recently showed that the flavonoid in chocolate also could stop damage to blood vessel² walls.
[01:41.98]And a University of California study showed that flavonoid from chocolate produce nitric acid in the blood.
[01:51.28]Nitric acid helps protect the walls of blood vessels.
[01:56.61]A study by Cesar Fraga of the University of Buenos Aires in Argentina confirmed healthy activity in the blood
[02:06.88]after eating dark chocolate,
[02:09.54]Carl Keen of the University of California at Davis also carried out studies about flavonoid.
[02:19.31]The studies showed that foods high in flavonoid might help stop thickening of the blood
[02:26.65]that can lead to heart attacks or strokes.
[02:30.80]Mister Keen gave water, cocoa or nonalcoholic red wine to groups of ten men and women.
[02:40.05]Researchers tested their blood a few hours later.
[02:44.36]Both the wine and cocoa delayed the time it took for the blood to become solid.
[02:51.52]Only the cocoa protected platelets in the blood from becoming too sticky and breaking.
[02:58.57]Some of the studies about chocolate were paid for by the Mars company which makes many kinds of chocolate candy.
[03:07.74]All the researchers agreed that many more studies are needed to confirm their findings

1 helping   

n.食物的一份&adj.帮助人的，辅助的

参考例句：

• The poor children regularly pony up for a second helping of my hamburger. 那些可怜的孩子们总是要求我把我的汉堡包再给他们一份。
• By doing this, they may at times be helping to restore competition. 这样一来, 他在某些时候,有助于竞争的加强。

2 vessel   

n.船舶；容器，器皿；管，导管，血管

参考例句：

• The vessel is fully loaded with cargo for Shanghai.这艘船满载货物驶往上海。
• You should put the water into a vessel.你应该把水装入容器中。

3 vessels   

n.血管( vessel的名词复数 )；船；容器；（具有特殊品质或接受特殊品质的）人

参考例句：

• The river is navigable by vessels of up to 90 tons. 90 吨以下的船只可以从这条河通过。 来自《简明英汉词典》
• All modern vessels of any size are fitted with radar installations. 所有现代化船只都有雷达装置。 来自《现代汉英综合大词典》