单词：Gould plotter
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UNIT 5 Text A PRE-READING TASK Exercise 1 Before reading the passage, think over the question. Should a scientist be responsible for the results of his or her work? Why or why not? Now read the passag
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HIV, the virus that causes AIDS, frequently mutates. That has allowed the virus to bypass the immune system and infect about 80 million people over the last 35 years. However, researchers say the rapid evolution of HIV actually may be reducing its ab
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This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Some people are worried that the more we learn about genetics, the closer well get to a day when we can choose all sorts of characteristics for our bab
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Lesson 128 Part Ⅰ Warming-up Exercises Instruction-following: How to Make a Proper English Tea Tea: 1. boil __________________ 2. __________________ (boiling water) 3. __________________ (1 teaspoon
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Prosecutors in Ethiopia are seeking the death penalty for 40 people found guilty of conspiring to overthrow the government Peter Heinlein | Addis Ababa 24 November 2009 Prosecutors in Ethiopia are seeking the death penalty for 40 people found guilty
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By Selah Hennessy London 04 November 2009 In this video image, Simon Mann talks to reporters in a courtroom following his pardon by the government in Malabo, Equatorial Guinea, 03 Nov 2009 A British man who was part of a failed plot to overthrow the
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