If you read dog-training books or watch dog trainers on television, you've probably learned that to control your dog, you have to display dominance. It's commonly thought that because dogs are pack animals, they live according to dominance hierarchie

发表于:2018-12-07 / 阅读(118) / 评论(0) 分类 大千世界

This is Whats Trending Today. Are you a cat person or a dog person? People around the world are bitterly divided about which animal is the better pet. But a new study may have found a clear winner when it comes to which animal is more intelligent: do

发表于:2018-12-08 / 阅读(68) / 评论(0) 分类 2017年VOA慢速英语(十一)月

Scientists say they may have found the first moon outside our solar system. Many planets are known to exist beyond our solar system. But there has been no confirmation of a moon on the outside. The possible moon appears considerably larger than Earth

发表于:2018-12-08 / 阅读(54) / 评论(0) 分类 2018年VOA慢速英语(十)月

回忆1 第一篇讲花生品种改良。第二篇讲free play 第三篇讲的味觉在科学的研究发展 回忆2 阅读有一篇记得是孩子自主学习对自身的影响, 还用rats做试验,题型有leading,还是带NB的,有YNNG,有

发表于:2018-12-12 / 阅读(112) / 评论(0) 分类 雅思机经

By Nancy Steinbach Broadcast: September 24, 2003 This is Phoebe Zimmermann with the VOA Special English Health Report. For many years, researchers have been studying ways to extend life and to improve

发表于:2018-12-15 / 阅读(66) / 评论(0) 分类 VOA2003(下)-环境与健康

Intelligent Crows Use Tools What do otters, chimpanzees, and one species of crow have in common? All three are animals. They also use tools. Scientists have long known that a crow native to New Caledonia is able to use tools. The birds use them to re

发表于:2018-12-16 / 阅读(59) / 评论(0) 分类 2016年VOA慢速英语(九)月

This is Scientific American's 60-Second Science, I'm Adam Hinterthuer, got a minute? If a train heading east leaves Chicago at noon, and a train heading west leaves New York an hour later, would that make you any better at math? New evidence says No

发表于:2018-12-24 / 阅读(64) / 评论(0) 分类 Scientific American(四)月

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. You know that warm feeling you get when you spend time with someone you love? How about the one that comes from wrapping your hands around a steaming m

发表于:2018-12-24 / 阅读(71) / 评论(0) 分类 Scientific American(十)月

This is Scientific American's 60-Second Science. I'm Steve Mirsky . Got a minute ? The most common natural disaster in the U.S. is flash flooding, which usually hits out of the not clear blue sky. Now researchers are trying to establish an early warn

发表于:2018-12-24 / 阅读(71) / 评论(0) 分类 Scientific American(十一)月

This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute? Look at a map and you can tell right away where New York ends and New Jersey begins. But that official border is not a true reflection of how the community is really sha

发表于:2018-12-24 / 阅读(48) / 评论(0) 分类 Scientific American(十一)月

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Some people are worried that the more we learn about genetics, the closer well get to a day when we can choose all sorts of characteristics for our bab

发表于:2018-12-24 / 阅读(71) / 评论(0) 分类 Scientific American(三)月

[00:05.49]Physical changes, such as gray hair and small lines on the face, appear as we grow older. [00:15.78]Now, American scientists say such changes may result partly from changes in our genetic material. [00:24.24]They say these genetic mutations

发表于:2018-12-26 / 阅读(45) / 评论(0) 分类 美国英语听力80篇

Whether it's your sibling, best friend, parent or even your boss, you've called someone stupid at some point in your life. But how do we even define stupid behavior, and what can we do to avoid acting stupidly? 生活中有时候你会说某个人很蠢

发表于:2019-02-17 / 阅读(84) / 评论(0) 分类 阅读空间

SAN FRANCISCO, Feb. 26 (Xinhua) -- Researchers have conducted a large, international, multi-institutional study to uncover new information about similarities and differences underlying various neurodevelopmental disorders including autism, intellectu

发表于:2019-02-18 / 阅读(57) / 评论(0) 分类 英语新闻

There may be a link between later bedtimes and weight gain, new research suggests. 新研究表明,晚睡与体重增加之间可能存在关联。 Researchers studied 3,342 adolescents starting in 1996, following them through 2009. At three points

发表于:2019-02-18 / 阅读(47) / 评论(0) 分类 阅读空间

How to Survive a Recession Unemployment, stock market crashes, foreclosures, and increasing national debt are topics that preoccupy Americans today. Most of us are worried, if not petrified, about our financial future. Thoughts about how to survive p

发表于:2019-02-18 / 阅读(50) / 评论(0) 分类 阅读空间

The company you keep says a lot about you. Friends have a big influence over how you feel, think, and behave. Here are five reasons you should be careful who you surround yourself with: 你周围的朋友很大程度上地代表着你是个怎样的人

发表于:2019-02-18 / 阅读(52) / 评论(0) 分类 阅读空间

澳大利亚研究人员发现老年痴呆症的补救措施 VIENNA, Sept. 2 (Xinhua) -- Austrian scientists have discovered a natural remedy(补救方法) which could play an important role in the future treatment of dementia. The scientists fro

发表于:2019-02-18 / 阅读(57) / 评论(0) 分类 英语新闻

BEIJING, July 26 (Xinhuanet) -- The breast cancer is more deadly to black women than to whites, a new study found. This finding was published online Monday on the Journal of Clinical Oncology in the United States. The study was done by the City of Ho

发表于:2019-02-19 / 阅读(106) / 评论(0) 分类 英语新闻

A study conducted on more than 68,000 middle-aged US women suggests that females who don't get enough sleep may end up adding some extra pounds over years. Researchers followed 68,183 middle-aged women for 16 years and found that those who slept 5 ho

发表于:2019-02-19 / 阅读(53) / 评论(0) 分类 阅读空间