最新四级晨读主题美文100篇 73

Are you a good tipper? You're out to dinner. The food was delicious and the service was fine. You decide to leave a big fat tip - why? The answer may not be as simple as you think. 当你在外面吃饭的时候，食物可口，服务周到，于是你

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[00:02.16]Now lets see who youre competing against. 现在让我们看看你们的对手是谁 [00:04.24]Give it up for the Crenshaw Heights Warriors! 来自克安萧高地中学 勇士队 [00:10.40]MALE CHEERLEADER: All right, Crenshaw! 干得好 克安

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BBC News. The charred London tower block engulfed in one of Britain's worst fires in modern times is being inspected to see if it's safe for firefighters to finish looking for bodies. Seventeen deaths have now been confirmed, but many people are unac

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Ants have an amazing ability to communicate with each other and work together to accomplish complex tasks. Their specialized behavior due to chemical communication is so well developed, in fact, that humans can learn a lot from them about how best to

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But the rat was in no hurry. He began imitating Wilbur's voice. 可是老鼠不急不忙。它开始学威尔伯的口气说话。 So it's 'Hurry up, Templeton,' is it? He said. 又是赶快啊，坦普尔顿，对吗？它说， Ho, ho. And what tha

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Mosquitoes spread malaria that kills an estimated 429,000 people every year. Many of them are children, so this new method of killing mosquito populations has sparked a huge interest. Scientists from Imperial College London managed to eliminate a pop

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图片1 fake n．假货，欺骗 adj. 假的 v．伪造，厦造，捏造，假造，仿造 例句：On closer examination the antique was proved to be a fake. 再经仔细观察，证实那个古董是赝品。 disguise v．假装，伪装，掩饰

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There is a festival in this town that brings in thousands of visitors, and livens(1) the valley for over a week. It's called Apple Blossom. By the name, you can tell that it coincides with the blossoming of the many apple trees that grow here. The we

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SSS 2008-10-03

This is Scientific American's 60-Second Science. I'm Adam Hinterthuer. Got a minute? When we feel like we don't have command of our own fate, our brains often invent patterns that offer a sense of self-control. Some folks knock on wood or step over c

SSS 2009-09-17

The early Earths oceans were home to a lot of interesting chemistry. Now scientists have found that amino acids thought to be present way back when could have been cooked into other compounds vital for lifean idea you should take with a grain of salt

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Maybe, I added, it's no more approachable than an electric eel or an electric ray! 也许，我又说，我们不能接近它，就像不能接近一条电鳗，或一个水雷那样! Right, the commander replied. And if it has their power to electro

2006年VOA标准英语-Researchers Cure Lethal Cancer in Mice

By Jessica Berman Washington 08 May 2006 Scientists report they have cured a highly malignant form of cancer in ordinary laboratory mice using the white blood cells of mice that are resistant to cance

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[Cartoon audio clip] We interrupt your regular broadcast to bring you this important news bulletin. Humans can talk. Chimps cant. Your scientific jargon staggers me, Pinky. In recent years scientists have learned that mutations in a gene called FOXP

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