单词：lactose litmus agar
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Sara needed to see the doctor. She had an upset stomach. She felt bloated, and needed to pass gas every minute or so. This was terrible. She couldnt go anywhere in public. Her friends told her it was because she had moved to America. The air, water,
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LULU GARCIA-NAVARRO, HOST: And now to another major battle. President Trump hasn't yet nominated a replacement for Supreme Court Justice Anthony Kennedy, but the fight over confirming that nominee has already begun. It's going to be intense and expen
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调味料及香精：(condiment/flavoring/dressing/essences) 酱油soy 双抽black soy sauce 生抽thin soy sauce 醋vinegar 白醋white vinegar 盐salt 糖sugar 料酒rice wine 冰糖rock sugar 花椒wild pepper 胡椒pepper 黑胡椒black pepper 生姜
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Voice 1 Welcome to Spotlight, I'm Christy Van Arragon. Voice 2 And I'm Joshua Leo. Spotlight uses a special English method of broadcasting. It is easier to for people to understand no matter where in the world they live. I am sorry Voice 1 This phras
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This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute? The ability to digest milk as adults, and as infants, actually, is due to the expression of an enzyme called lactase. That's the University of Pennsylvania's Sarah Tishk
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This is Scientific American 60 Seconds. I'm Cynthia Graber. This'll just take a minute. In Europe and the near east, people went from being mobile hunter gathers to more settled agriculture way of life. But in Africa, no matters domesticated animals
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熟菜 string bean 四季豆 pea 豌豆 green soy bean 毛豆 soybean sprout 黄豆芽 mung bean sprout 绿豆芽 bean sprout 豆芽 kale 甘蓝菜 cabbage 包心菜; 大白菜 broccoli 花椰菜 mate
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By Anjana Pasricha New Delhi 24 September 2009 India has embarked on an ambitious project to give biometric identity cards to its 1.2 billion citizens. If implemented, the project could help millions of poor people gain easier access to public servi
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Scientists Point to Possible Health Effects of Cell Phones This past May, in a major policy shift, the World Health Organization said electromagnetic fields produced by mobile phones are possibly carcinogenic. Although the International Association f
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RACHEL MARTIN, HOST: When people with simple, non-urgent medical problems go to the emergency room for treatment, it creates all kinds of problems - ERs get overcrowded, treatment is expensive, it's often inefficient. This is a big issue here in Wash
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At the same time, methanogens can use hydrogen and carbon dioxide produced by other bacteria to generate methane, 同时，产甲烷菌可以使用其他细菌产出的氢和二氧化碳以生成甲烷， which can reduce the total volume of gas by u
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Topic 1-The best and the worst of CCTV New Year's Gala 2017 The CCTV New Year's Gala this year has triggered thousands of netizens to comment on its best and worst performances. What are the highlights and the low points? Topic 2-Burning the first in
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you shouldnt quit drinking milk. It is a good source of calcium after all.what you should do is stop consuming dairy on an empty stomach period. On an empty stomach, dairy moves faster through your intestines and is more likely to cause you intoleran
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D. 其它 Long rice 长米，较硬，煮前先泡一个小时 Pudding rice or short rice 短米，较软 Brown rice 糙米 THAI Fragrant rice 泰国香米* Glutinous rice 糯米* Strong flour 高筋面
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Books and Artts; Book review; 文艺；书评； Conundrums of science; 科学谜题； What is it for? 科学究竟有什么用？ Scinece in the 20th century and beyond; by Jon Agar; 20世纪后科学；乔艾格著； SCIENCE works with problems b
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Voice 1 Welcome to Spotlight, I'm Christy Van Arragon. Voice 2 And I'm Joshua Leo. Spotlight uses a special English method of broadcasting. It is easier to for people to understand no matter where in the world they live. I am sorry Voice 1 This phras
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