单词：experimenter expectancy effect
单词：experimenter expectancy effect 相关文章
A new study predicts that South Korean women will be the first group in the world to have an average lifespan of more than 90 years. Researchers at Imperial College London and the World Health Organization studied the lifespans of people in 35 indust
2017年VOA慢速英语(二)月
By Nancy Steinbach Broadcast: November 19, 2003 This is Phoebe Zimmermann with the VOA Special English Health Report. When scientists want to test the effectiveness of a new drug, they usually divide
VOA2003（下）-环境与健康
Benjamin Frankin wondered about(at) lightning. He combined his curiosity with imagination and carried out his well-known experiment to show that lightning and an electric spark are the same thing. Cur
自考英语（一）78讲
They discovered that when a famine was able to trigger an effect was different for the grandmother than the grandfather. The grandmother appeared susceptible while she herself was still in the womb, w
基因外遗传现象
今年7月，14岁的美国华裔少年刘继打破老虎伍兹的纪录，成为美国青少年高尔夫锦标赛史上最年轻的冠军，同时刷新老虎伍兹保持了19年的纪录。刘继出生在纽约州一个只有11万人口的小城市史
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By David McAlary Washington 20 March 2007 Black Americans do not live as long as white Americans, but a new study shows that the gap in life expectancy is slowly closing. VOA's David McAlary says the findings explain some of the reasons why. Life exp
2007年VOA标准英语（三月）
By Carol Pearson Washington, DC 27 April 2006 watch Life Expectancy report Life expectancy in certain parts of the world has fallen dramatically -- as much as 50 percent in some countries. That's acco
2006年VOA标准英语（四月）
Life Expectancy Declining in Large Parts of US The obesity epidemic is not just an American health issue. New data from the World Health Organization show that more than 1 billion adults around the world are overweight, nearly a third of them obese.
VOA标准英语2011年(六月)
RACHEL MARTIN, HOST: The federal government has just released the latest statistics on life expectancy in the United States, and the news isn't good. In fact, it's pretty grim. NPR health correspondent Rob Stein has details. ROB STEIN, BYLINE: For de
2017年NPR美国国家公共电台12月
Life Expectancy In U.S. Drops For First Time In Decades, Report Finds RACHEL MARTIN, HOST: We have sobering news this morning about the nation's health. For the first time in years, life expectancy has decreased. Here's NPR health correspondent Rob S
2016年NPR美国国家公共电台12月
The Great Depression Increased Life Expectancy A study in the Proceedings of the National Academy of Sciences finds that the population life expectancy actually increased during the Great Depression. Karen Hopkin reports Believe it or not, depression
60秒科学
By Melinda Smith Washington 17 September 2007 The U.S. Centers for Disease Control and Prevention has released figures that show Americans are living longer. Experts attribute the longevity to better treatment for heart disease, cancer and stroke --
2007年VOA标准英语（九月）
今天我们要学的词是side effect。 Side effect, 副作用。一项最近民调显示，Most Americans want health reform but fear its potential side effects, 大多数美国人都希望看到医疗改革，但是又担心改革可能带来的副
英语每日一词
As the development of the society, people want to conquer the environment, they use the high technology to change the environment, when people are satisfied with what they did to the nature, the nature is starting to teach human being a lesson. In th
英语作文
By Vidushi Sinha Washington 02 November 2009 Global life expectancy can be increased by almost five years and millions of premature deaths prevented if five risk factors affecting health are addressed, according to a report by the World Health Organ
VOA标准英语2009年(十一月)
今天我们要学的词是side effect。 Side effect, 副作用。一项最近民调显示，Most Americans want health reform but fear its potential side effects, 大多数美国人都希望看到医疗改革，但是又担心改革可能带来的副
英语单词荟萃
NEW YORK, Dec. 27 (Xinhua) -- New York City Mayor Michael Bloomberg announced on Tuesday that babies born in the city in 2009 have the record high life expectancy of 80.6 years, an increase of nearly three years since 2000. The rate of 80.6 years is
英语新闻
VATICAN CITY, Feb.28 (Xinhua) -- The resignation of Pope Benedict XVI came into effect at 8 pm local time (1900 GMT) on Thursday, who had left the Vatican by helicopter for the papal vacation retreat in south Rome earlier in the afternoon. The pope h
英语新闻
LOS ANGELES, July 28 (Xinhua) -- Mainly due to rampant obesity, Americans' life expectancy is one-and-a-half-year shorter than that of Western Europeans on the average, according to a new study published on Thursday. But 40 years ago, Americans could
英语新闻
BEIJING, Aug. 9 (Xinhua) -- China's average life expectancy rose to 74.83 years as of the end of 2010, according to the National Bureau of Statistics (NBS). The NBS used data from the sixth national census to calculate the figure, which is 3.43 years
英语新闻