单词：physical makeup
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Unit 7 Emergency Part I Pre-reading Task Listen to the recording two or three times and then think over the following questions: 1. How did the father understand courage at first? 2. What did courage
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South Africa Youth See New Life Through Photography 南非青年通过摄影看到新生活 JOHANNESBURG There is a growing iniative in Johannesburg, South Africa, that teaches disadvantanged children how to take photographs and sell their prints in
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China Opens Shanghai Stock Market to Hong Kong 中国向香港开放上海证券市场 From VOA Learning English, this is the Economics Report. Investors in Hong Kong and Shanghai may now invest in a limited group of securities on either city's stock
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JUDY WOODRUFF: We now take a closer look at North Korea and cyber-terrorism and what the president had to say about it all this afternoon. It made up the dominant topic at today's White House news conference. JUDY WOODRUFF: It was the first question.
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Properly analysed, Fraunhofer lines provide information about the exact chemical make-up of whatever is reflecting the light. 经过恰当分析，夫琅和费谱线可以提供关于任何反光物体的化学组成的确切信息。 Their patterns
经济学人科技系列