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  1. ...kill many marine animals. We can save energy by switching off the unattended appliances and walk instead of riding transport to a place if it is not too far away. The government may plant more ...

    分類:科學及數學 > 地理學 2008年03月13日

  2. ... Playing with Matches 5. Unattended Stoves 6. Leaving a curling iron...or a dropped cigarette or an electric heater too close to flammable material. Remember, every fire uses...

    分類:科學及數學 > 地理學 2008年11月16日