单词:rotary-type pneumatic tool
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SCIENCE IN THE NEWS - Fight to End Polio a Story of Unexpected Problems, but Also Progress Over the years, polio experts have had to learn to deal with surprises. Transcript of radio broadcast: 03 March 2008 VOICE ONE: This is SCIENCE IN THE NEWS in
托福阅读:托福阅读中需要理解的重要句子 1.Wearing masks and costumes, they often impersonated other people, animals, or supernatural beings, and mined the desired effect success in hunt or battle, the coming rain, the revi
This is the VOA Special English Development Report. An Afghan girl receives a dose of polio vaccine The World Health Organization has begun to use a new vaccine against polio. Officials say it will become a major tool in the campaign to end a disease
Try an mnemonic device such as an acronym sentence like Raging Martians Invaded Venus Using X-ray Guns. 尝试用可以帮助记忆的口诀,像是首字母缩略字组成的句子,例如:愤怒的火星人用X光枪入侵金星。 学习重点: