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- 共用题干 Pop Music in AfricaYoung musicians in African countries are creating a new kind of pop music. ...
- 共用题干 Travel Across AfricaFor six hours we shot through the barren（荒芜的）landscape of the Karoo desert...
- 共用题干 Global WarmingFew people now question the reality of global warming and its effects on the wor...
- A lot of people could fall ill after drinking contaminated water.
- 共用题干 Robots May Allow Surgery in SpaceSmall robots designed by University of Nebraska researchers m...
- 共用题干 Chimpanzees1 Chimpanzees（黑猩猩）will soon be extinct（灭绝）.If the present rate of hunting and habit...
- 共用题干 Water一the Issue of This CenturyThe world is running short of freshwater. Populations are growi...
- 共用题干 Earth Angels1 Joying Brescia was 8 years old when she noticed that cigarette butts（烟头）were lit...
- 共用题干 When We Are AsleepEveryone dreams,but some people never recall their dreams,or do so very rare...