单词：R-factor bacterial population
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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
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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
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As a kindergarten teacher might say, sharing is caring. She might not mention that cooperation is also a great way to form a community and thus improve everyone's chances of survival. Humans aren't only ones to apply this strategy. Marine bacteria al
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This is Scientific Americans 60-second Science. I'm Adam Hinterthuer. Got a minute? The Komodo dragon is the largest living lizard and a fearsome predator. It has long been thought that some of its hunting prowess was due to a mouth teeming with bact
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[00:01.84]3 Listen and complete. [00:06.70]What have the children done for their project [00:10.30]on population? [00:11.96]Listen and complete their sentences. [00:16.14] [01:04.64]4 Listen and complete. [01:08.78]Listen and fill in the missing info
外研社新标准初中英语九年级
【Transcript】 Tina: Hi! Emma, long time no see. How was your life in England? Emma: Is you, Tina! Im glad to see you. I was back to China a few days ago. I had a great time in my study in England. It is a beautiful country and the people there
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This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Theres definitely methane on Marsand there are seasonal variations of how much is being released into the thin Martian atmosphere. Which means that Mar
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This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Mosquitoes carry nasty diseasesdengue fever, west nile, malaria. But the microbes that cause those diseases dont attach themselves to the mosquitoes an
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Theres been an unexpected development in our understanding of drug resistance in bacteria. The accepted scenario was a simple case of evolutionary selection. In a bacterial population exposed to a killer drug, a few lucky individuals might have a gen
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Philippine Caregiver Wins Israel's X-Factor 以色列音乐比赛 菲佣夺冠 WASHINGTON Rose Fostanes, a Philippine caregiver who has worked in Israel for several years, is the first season winner of a popular Israeli television singing contest cal
VOA标准英语2014年(一月)
今天我们要学的词是WOW factor。 A WOW factor, 指让人惊叹的东西。经济不景气，也影响到了玩具行业。从二月中旬开幕的美国国际玩具展可以看出， In 2009, there will still be toys with the WOW factor, but
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By Kent Klein Washington 13 April 2008 Soaring food prices are causing big problems in many parts of the world today. One factor in the ballooning costs may be the increasing global demand for biofuels - vehicle fuels made at least partly from corn (
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本集简介： 瑞秋大做春梦先是和钱德，第二次天梦见和钱德及乔伊（不过大多数时间是后两人在忙乎），第三个梦终于是和罗斯。 菲比想做兼差赚钱，所以给钱德当秘书。 钱德由此发现同僚们
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在这一周的英国单曲榜当中，由英国著名选秀大赛X Factor冲进决赛阶段的选手们合唱的一首公益歌曲《Hero》空降榜首位置。大约15年前，由花蝴蝶玛丽亚凯丽(Mariah Carey 听歌)演唱的原版《Hero》在英国单曲榜中最高曾排在第七位。 从英国选秀大赛X Factor走出来的选手，
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X Factor冠军打榜热歌：All Night Long Alexandra Burke是第五季X Factor的冠军，也是X Factor的舞台上继Leona Lewis之后第二个女性冠军。Alexandra这首发行于今年5月的新单曲本周打入英国单曲榜前十。 Artist：
经典英文歌曲
Russia has banned the importation of kangaroo meat from Australia. Producers fear the decision will decimate their industry. Russia was the main market for the Australian kangaroo trade, accounting for about 70% of international demand. Russia is wo
VOA标准英语2009年(八月)
2010 X Factor冠军Matt Cardle新单曲：When We Collide Matt Cardle，参加第七季X Factor之前只是一个27岁的粉刷匠这身份实在平凡得可以。今年他鼓起勇气参加了第七季X Factor，一举拿下冠军，并发行了自己
经典英文歌曲
Jo: This is Real English from BBC Learning English. Im Jo. Jean: And Im Jean. Jo: Today were going to look at words and phrases that have recently become part of the English language. Jean: 在我们的《地道英语》节目当中，我们会带领大家一起来学习和熟
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X-Factor人气选手Misha B新单《Do You Think of Me》带着浓浓的想念 X-Factor选手米莎碧被许多人拿来和麻辣鸡做比较，但她的的声音也颇具辨识度。这是她的最新单曲《Do You Think of Me》，表达了对自己
流行英文歌曲