托福阅读素材：多吃巧克力有好处吗(自然科学篇)

pay for the study.
　　Can chocolate improve memory?
　　Brain processes decrease as we age. By the time we reach our 50s and 60s we may have trouble remembering simple things such as the names of new people we meet or where we put our car keys.
　　Dr. Scott Small is a professor of neurologyat Columbia University in New York City. He is the lead writer of a research paper describing the effects of cocoa flavanols on brain activity.
　　The study involved 37 volunteers aged between 50 and 69. Researchers gave them a high-level flavanol drink made from cocoa beans or a low-level flavanol drink. For a period of three months, some subjects got 900 milligrams of flavanol a day. The others got 10 milligrams of flavanol each day.

欲知更多详情  点击一对一咨询顾问   免费热线：400-618-0272

　　Brain imaging and memory tests were given to each study subject before and after the study. Dr. Small says that the subjects who had the high-level flavanol drink showed much improvement on memory tests.
　　Four-year study to dig deeper into healing powers of flavanol
　　The researchers warn that more work is needed because this study was performed on a small group. Researchers at Brigham and Women’s Hospital in Boston, Massachusetts recently announced plans to do just that.
　　Dr. JoAnn Manson is the lead researcher of a four-year study involving 18,000 adults. This study will use flavanol capsules.
　　“This capsule of cocoa flavanols will avoid having the calories and the sugar and the saturated fat found in chocolate.”
　　The study subjects will be divided into two groups and will take two pills a day. The capsules will all look the same. But, one group’s capsules will contain flavanols. The other group will take capsules made of an inactive substance, or placebo.
　　Dr. Manson says that a person would have to eat ten times a normal amount to get the flavanols in just one flavanol pill.
　　“The amount of chocolate that it would take in order to have this amount of cocoa flavanols would be more than ten times the amount that people would ordinarily eat.”
　　But Dr. Small says people should not necessarily start eating more chocolate. He says a person would have to eat a huge amount of chocolate to get the level of flavanol given to the test subjects. He also says many manufacturers remove the flavanols from their chocolate products.
　　Dr. Small says a cocoa-based flavanol extract may be developed in the future. He says that more studies are needed to see how much flavanol is good for human health.

在线咨询获得专家一对一指导，制定专属你的学习规划

长难句：

1.Dr. Small says that the subjects who had the high-level flavanol drink showed much improvement on memory tests.
　　句子类型：宾语从句+定语从句
　　句子拆分：
　　主干：Dr. Small says…
　　宾语从句：that the subjects showed much improvement on memory tests定语从句：the subjects who had the high-level flavanol drink
　　翻译：斯摩尔教授表示，饮用高浓度黄烷醇饮料的受试者在记忆测试中大有提高。

2.The researchers warn that more work is needed because this study was performed on a small group.
　　句子类型：宾语从句+原因状语从句
　　句子拆分：
　　主干：The researchers warn…
　　宾语从句：that more work is needed
　　定语从句：because this study was performed on a small group
　　翻译：研究人员警告说还需要做更多工作，因为这项研究是在一个很小的群体中进行。

在线咨询获得专家一对一指导，制定专属你的学习规划

3.The amount of chocolate that it would take in order to have this amount of cocoa flavanols would be more than ten times the amount that people would ordinarily eat.
　　句子类型：定语从句
　　句子拆分：
　　主干：The amount of chocolate would be more than ten times the amount.
　　定语从句：that it would take in order to have this amount of cocoa flavanols
　　翻译：为了获得这种量级的可可黄烷醇，人们需要食用的巧克力数量是正常人通常食用的10倍以上。

热门活动：

相关阅读：

 如有更多问题欢迎致电新通教育：400-618-0272，登录