食物网的食性层次

Two Women and a Deadly Complication of Childbirth Broadcast: September 9, 2003 (THEME) VOICE ONE: I'm Bob Doughty with Sarah Long, and this is the VOA Special English program, SCIENCE IN THE NEWS. VOI

发表于:2018-12-01 / 阅读(315) / 评论(0) 分类 VOA2003(下)-发展与科学

More trouble at Japan's tsunami-damaged nuclear plant. Workers were evacuated after smoke was spotted coming from the No.3 reactor unit. Plant officials have been battling to cool reactors and spent fuel pools to bring the radiation-leaking plant und

发表于:2018-12-15 / 阅读(154) / 评论(0) 分类 美联社新闻一分钟2011(三月)

This is Scientific American's 60-Second Science, I'm Cynthia Graber. This will just take a minute. Even if you have a light hand with the salt shaker, you probably get lots of sodium in processed or restaurant meals. But sodium can contribute to high

发表于:2018-12-24 / 阅读(151) / 评论(0) 分类 Scientific American(六)月

Individuals' Blood Glucose Levels after Meals May Be Predictable预测血糖 High blood sugar levels are a risk factor for type 2 diabetes. Doctors today have only general dietary recommendations for how to control those levels, because theres no rea

发表于:2018-12-24 / 阅读(135) / 评论(0) 分类 2017年Scientific American(四)月

Mike: So Dusty, we were talking earlier, and you're telling that you're into marine biology, and that's kind of your background. So, tell me a little bit about why you like - what's your fascination with marine biology? Dusty: Well, the main thing is

发表于:2018-12-25 / 阅读(157) / 评论(0) 分类 原版英语对话1000个

Unit 74:Keep food out of the wrong places 第74单元:勿把食物置于错误的地方 Do you keep a jumbo-size candy bar in your desk drawer in the event of a nuclear attack? 你的抽屉里随时都有一条巨无霸糖果棒以防核弹来袭吗

发表于:2018-12-26 / 阅读(101) / 评论(0) 分类 减肥瘦身英语口语话题

[00:05.12]American researchers say a new, low-fat substitute for butter could reduce the risk of heart attack and stroke for millions of people. [00:17.76]The new food product is made from vegetable oil with added substances called sterol esters. [00

发表于:2018-12-26 / 阅读(124) / 评论(0) 分类 美国英语听力80篇

Broadcast: Jan 30 2003 Researchers say there appears to be no link between a substance found in some high-carbohydrate foods and the development of some types of cancer. U.S. and Swedish researchers c

发表于:2019-01-03 / 阅读(177) / 评论(0) 分类 VOA2003(上)-健康之旅

HEALTH REPORT - October 23, 2002: Folic Acid Reduces Fetal Deaths By Nancy Steinbach This is the VOA Special English Health Report. A new study in Sweden has confirmed another important health effect

发表于:2019-01-04 / 阅读(172) / 评论(0) 分类 健康与环境

SCIENCE IN THE NEWS - Mars Was Not Always Bitterly Cold BOB DOUGHTY: This is SCIENCE IN THE NEWS, in VOA Special English. Im Bob Doughty. BARBARA KLEIN: And Im Barbara Klein. Today, we tell about temperature changes on the planet Mars. We also tell a

发表于:2019-01-12 / 阅读(142) / 评论(0) 分类 2011年VOA慢速英语(十一)月

Experts: Let Produce Dry Out to Avoid Bacteria American researchers say farmers should wait one day after a rain storm or watering their fields to harvest fresh fruits and vegetables. They say gathering the crops at least 24 hours after rainfall incr

发表于:2019-01-12 / 阅读(262) / 评论(0) 分类 2015年VOA慢速英语(七)月

Tests Show Levels of Arsenic in US Rice Two hundred different types of rice and rice products tested by both the non-profit research group, Consumer Reports, and the U.S. Food and Drug Administration [FDA], contained varying levels of different forms

发表于:2019-01-13 / 阅读(152) / 评论(0) 分类 VOA标准英语2012年(九月)

Health study finds high levels of harmful chemical BPA Zulima Palacio | Washington, DC 24 May 2010 A new study by a coalition of environmental health groups found that 46 out of 50 cans of food tested positive for high levels of BPA, a chemical used

发表于:2019-01-13 / 阅读(151) / 评论(0) 分类 VOA标准英语2010年(五)月

StudyFindsHighLevelsofBPAinCannedFoodforKids The industrial chemical BPA has been used to make hard plastic bottles and the lining of food cans for decades. After studies indicated that the chemical could play a role in cancers, heart disease and abn

发表于:2019-01-13 / 阅读(114) / 评论(0) 分类 VOA标准英语2011年(九月)

Mike: So Dusty, we were talking earlier, and you're telling that you're into marine biology, and that's kind of your background. So, tell me a little bit about why you like - what's your fascination with marine biology? Dusty: Well, the main thing is

发表于:2019-01-25 / 阅读(147) / 评论(0) 分类 英语趣味课堂

We all make resolutions every year to keep fit whether we have diabetes or not. The difference is that as people with diabetes, we need to keep fit, and we know that even if we don't do anything about it. One only has to read the medical abstracts an

发表于:2019-02-03 / 阅读(209) / 评论(0) 分类 实用英语

Since the April 20 explosion and fire that sank the BP Deepwater Horizon off-shore oil rig, about 800,000 liters of crude oil a day have been spewing from the broken well into the Gulf of Mexico. The massive spill is threatening marine life, commerci

发表于:2019-02-05 / 阅读(216) / 评论(0) 分类 VOA标准英语2010年(五)月

947 sentenced for food-related crimes BEIJING, Oct. 30 (Xinhua) -- A total of 947 criminals have so far been sentenced by Chinese courts for producing and selling poisonous or harmful food, according to a spokesman for the Supreme People's Court (SPC

发表于:2019-02-11 / 阅读(139) / 评论(0) 分类 英语新闻

The process of causing water molecules in the food to resonate at extremely high frequencies and to convert to steam actually causes the chemical structure of the food to change. This causes food to lose almost 100% of its nutritional value, and it a

发表于:2019-02-18 / 阅读(173) / 评论(0) 分类 阅读空间

lose weight 减肥 If I eat less, I'll lose weight. 少吃点的话,我可以减掉体重的。 You look like you've lost weight lately. 你最近好像瘦了点了。 She's been weak ever since and she's lost weight. 自从那时候开始她就一病

发表于:2019-02-26 / 阅读(186) / 评论(0) 分类 老外最常用的英文短语
学英语单词
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ethyl carbamate
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