美国科学60秒 SSS 2013-01-10

This is Scientific Americans 60 second Science, I am Gretchen Kuda Kroen, this will just take a minute. When normal populations of healthy bacteria in the gut get out of whack, the result can be the stubborn and recurrent bacterial infection known as

美国科学60秒 SSS 2013-01-14

When normal population of healthy bacteria in the gut get out of whack, the result can be the stubborn and recurrent bacterial infection known as Clostridium Difficile, C Dif. The mean symptom is nearly constant and debilitating diarrhea. One of the

Immigrant Activists Say No to DNA Tests

When kidnappers attacked a woman on a Guatemala City street and seized her baby daughter, DNA testing came to the rescue. The tests helped reunite the girl with her mother after the baby was left at a religious center with no identification. DNA test

VOA慢速英语--New English Tests Beyond TOEFL, IELTS

New English Tests Beyond TOEFL, IELTS Since 1964, colleges and universities in the United States have used the Test of English as a Foreign Language, or TOEFL, to measure an international applicants level of English. Universities in English-speaking

事实：怀孕测试使用青蛙-Frogs Were Used In Pregnancy Tests

Frogs Were Used In Pregnancy Tests Between 1930-1950, African clawed frogs were in great demand. These frogs were imported all over the world and used in labs for pregnancy tests. Technicians injected a sample of a womans urine into a female frogs hi

美国科学60秒 SSS 2013-01-11

This is Scientific Americans 60 second Science, I am GretchenKuda Kroen, this will just take a minute. When normal populations of healthy bacteria in the gut get out of whack, the result can be the stubborn and recurrent bacterial infection known as

【一起闲话英语】对于考试的看法-Tasking Tests

Rese / Botswana speaker I think.. all people learn, because they give you the opportunity to evaluate how much you know and how far you've gone with whatever it is that you're learning, and they give you a chance to also see how close you are with yo

听一分钟英文：Tests-考试

I hate tests. Who was it who decided that tests are a good way to test your knowledge? Probably someone who liked putting students through pain. Tests are so unfair. People who are good at remembering lots of things for a short time are good at tests

2006年VOA标准英语-Bush Says Missile Tests Further Isolate North K

By Scott Stearns White House 05 July 2006 President Bush says North Korea's missile tests have further isolated the reclusive regime. European and Asian leaders have joined the United States in condemning the test launches over the Sea of Japan. ---

Ten US banks fail 'stress tests'

Ten US banks fail 'stress tests' 十个美国银行应力测试失败 Ten of America's largest 19 banks need a combined $74.6bn (50bn) of extra funds to boost（推进，提高） their cash reserves.（现金储备） That is the main finding of the so-called stress tests

VOA慢速英语2015 Blacks, Latinos Score Lower on Tests than Whites, Asians

Blacks, Latinos Score Lower on Tests than Whites, Asians White and Asian students continue to do better on tests than black and Latino students, says the U.S. Department of Education. This information, which comes from the governments 2015 Nation's R

Are Children Taking Too Many Tests?

Are Children Taking Too Many Tests? Urban school systems in the U.S. give too many tests, says a new study. President Obama agrees. In an open letter to parents, he asks: Ive got a pop quiz for parents and teachers across the country. If our kids had

2006年VOA标准英语-Genealogical Studies Being Aided by DNA Tests

By Greg Flakus Houston, Texas 24 November 2006 watch DNA report Millions of people around the world can trace their ancestry back several generations or more through oral history, family documents or government records of such events as marriages an

美国国家公共电台 NPR Can Sobriety Tests Weed Out Drivers Who've Smoked Too Much Weed?

ARI SHAPIRO, HOST: The highest court in the state of Massachusetts is considering roadside sobriety tests, specifically whether the tests that police use to determine drunk driving can also prove a driver is high on marijuana. As NPR's Tovia Smith re

2015年CRI New Draft Approved to Make Driving Lessons, Tests More Convenient for Learners

Currently, learners are required to take courses at driving schools before sitting theory and practical tests. They have to pay for the courses up front, and the schedule for lessons and exams is decided by the schools, most of which are located in r

VOA常速英语2008年-Rapid Malaria Tests Change Medical Diagnoses in

By Phuong Tran Dakar 25 April 2008 What started out as Africa Malaria Day was being observed worldwide for the first time on Friday. Health organizations have long said that most of the one million deaths every year attributed to malaria happen in Af

VOA常速英语2013--粪菌移植可治肠道疾病

Fecal Transplants Used to Cure Intestinal Disorders 粪菌移植可治肠道疾病 粪菌移植是指将健康人粪便中的功能菌群，移植到患者胃肠道内，重建具有正常功能的肠道菌群，实现肠道及肠道外疾病的诊疗。

2006年VOA标准英语-India Tests Long-Range Nuclear-Capable Missile

By Anjana Pasricha New Delhi 09 July 2006 Indian army soldiers watch the display of an Agni-2 missile during the Army Day parade in New Delhi (File photo) India has tested a sophisticated, long-range nuclear-capable missile that dramatically boosts

2006年VOA标准英语-Rice: Pyongyang's Missile Tests Do Not Scuttle

By David Gollust State Department 05 July 2006 Secretary of State Condoleezza Rice said Wednesday the international community has multiple ways of responding to what she termed North Korean brinksmanship. But she said the missile tests do not mean t

2018年CRI Safety highlighted in new document regulating self-driving cars' road tests

Authorities in China have issued new regulations for road tests of self-driving cars, which will allow local authorities to sign off on vehicle tests that match local conditions, while ensuring that safety is the top priority. Xin Guobin, China's Vic