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Lesson 28 New words and expressions 1. rare Jasper White is one of those rare people who believes in ancient myths. Many rare animals are at the edge of extinction. This is a rare genetic disease. 2. ancient Many ancient buildings have been preserved
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RACHEL MARTIN, HOST: Small donors are one of the big reasons Democrats now control the House of Representatives. The independent digital fundraising platform called ActBlue helped make that happen. Now Republicans want their own version of ActBlue. H
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MR CAVORS FLYING MACHINE When I first met Mr Cavor, he was about to finish building the machine in which he planned to travel to the moon. As it had neither wings nor an engine, I was amazed and asked him how his machine could fly. The secret lay in
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Mr Cavors Flying Machine When I first met Mr Cavor, he was about to finish building the machine in which he planned to travel to the moon．As it had neither wings nor an engine，I was amazed and asked him how his machine could fly．The secret lay
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Cell 细胞 Every living thing has at least one cell. 每个生物至少有一个细胞。 Then, what is a cell? 那么，什么是细胞呢？ Every cell works differently, but most cells work to maintain life. 每个细胞的功能都不相同，但大
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STEVE INSKEEP, HOST: If you should fly into Haines, Alaska, you'll be on a propeller plane so small that your pilot will call the roll. UNIDENTIFIED MAN: Melissa. MELISSA BLOCK, BYLINE: Yeah. UNIDENTIFIED MAN: Mary. MARY: Yes. UNIDENTIFIED MAN: Josep
2017年NPR美国国家公共电台5月