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本单元是关于求助别人的对话 Michal: I'm going to see a film tonight. Will anyone like to come with me? Alice: Oh I'd love to Michal but I have to iron all these shirts for Tim. Helen: Look, why don't you go with Michal and I'll iron the shirts? Mi

发表于:2018-12-03 / 阅读(39) / 评论(0)

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【英语时差8,16】蘑菇也能变为柴油？

Don: Time to go again to the A Moment of Science mailbag. Yal: A listener writes: Dear A Moment of Science, Scientists know that one day we'll run out of oil and other natural sources of energy. Beyond solar power and wind power and ethanol, what are

发表于:2018-12-27 / 阅读(52) / 评论(0)

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This is Scientific American's 60-Second Science. I'm Cynthia Graber. This'll just take a minute. It sounds like something out of a bad science fiction novel. During World War II, a fungus called Tricoderma reesei ate its way through US military unifo

发表于:2019-01-08 / 阅读(60) / 评论(0)

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Scientists in Brazil are turning fruit fibers into car parts. At a recent meeting of the American Chemical Society, the researchers described their work in making the next generation of automotive parts made from natural fibers from bananas, pineappl

发表于:2019-01-09 / 阅读(61) / 评论(0)

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发表于:2019-02-22 / 阅读(62) / 评论(0)

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accounting practice unit

arisaema taiwanense brevipedunculatum

coefficient of earthing