VOA标准英语2010年-US Scientists Unlock Clues to Mystery

Researchers find circadian clock in Monarch's antenna plays a major role in navigation Shelley Schlender | Michoacn, Mexico 22 March 2010 Scientists believe antennas are critical to the navigation of the Monarch butterfly. Related Links Monarch Watch

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The limpidness lettuce still has a little life left,a new study finds that produce continue to respond to life kills which enable them to keep protecting themselves from insects,and perhaps even enhance their nutritional value to us.Scientists knew t

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This is Scientific American's 60-Second Science. I'm Christopher Intagliata. Got a minute? Birds and sea turtles can migrate thousands of miles, by reading the Earth's magnetic cues. But we too might have magnetic sensing abilitiesin our eyes. So say

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Humans are pegged to a 24-hour cycle. We're locked into it not just by day and nighttheres the master timepiece in the brain called the circadian clock. But it doesn't make sense to live by a 24-hour clock in the Arctic, where it's dark or light for

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Unit 12 Time In-Class Reading How to Take Your Time I. Word List Directions: Memorize the words and phrases before class. You will benefit from your effort when you get the passage from your teacher a

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AA: I'm Avi Arditti and this week on WORDMASTER: our guest is linguist Herb Stahlke to talk about rhythm in English speech. HERB STAHLKE: Learners of English really have to master the rhythms of English early, and the teaching has to be aimed at rhyt

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AA: I'm Avi Arditti with Rosanne Skirble, and this week on WORDMASTER: expanding on reductions. When speakers compress a phrase like going to into gonna, or what do you into whaddaya, that's a reduction. We mentioned their importance when we talked l

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the sounds of the world There is a world of music out there! What we hear on the radio or see on TV is only a small part of all the wonderful music that is waiting for us.Most of us probably like pop music and have our favourate performers,stars or b

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Todd: So Tres, you are a drummer. Tres: Yes, I am indeed. And for all that negative baggage that comes with that term, yes I am a drummer. Todd: Wait wait, so you say that theres negative terms that go with being a drummer? Tres: Well sometimes when

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An 'eternal summer' created by home heating and lighting may be disrupting seasonal rhythms in the human body with the risk of illness or even premature death, researchers say. 研究人员指出，由家庭供暖和照明设备创造的永恒夏日可

原版英语对话1000个:526 Music Man

Todd: So Tres, you are a drummer. Tres: Yes, I am indeed. And for all that negative baggage that comes with that term, yes I am a drummer. Todd: Wait wait, so you say that theres negative terms that go with being a drummer? Tres: Well sometimes when

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AA: I'm Avi Arditti with Rosanne Skirble, and this week on WORDMASTER: expanding on reductions. When speakers compress a phrase like going to into gonna, or what do you into whaddaya, that's a reduction. We mentioned their importance when we talked l

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AA: I'm Avi Arditti with Rosanne Skirble, and this week on WORDMASTER: word order and the mind. A new study suggests that people naturally gesture in the order of subject-object-verb, regardless of the rules of their spoken language. Susan Goldin-Mea

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This is SCIENCE FRIDAY. I'm Ira Flatow. You open the door of your fridge and the light goes on, right? What if the light in your fridge could stay on and be programmed to help your veggies taste better or be more nutritious? Why? Well, it turns out t

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How to Sleep Like a Baby Problems sleeping can be a major drag on happiness if you cant sleep well, you cant function as well during the day. Today a reader asked, I want to spend less time rolling in the bed, and more time sleeping. I wanna be a bab

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模仿文本： More specifically, he studies the way light controls our internal clocks and circadian rhythms and works to understand how light and dark affect our well-being, everything from jet lag to serious mental health problems. Russell had to