![WhenChristmastimeisuponus,therewon'tbemanyfamilieswith...]( "WhenChristmastimeisuponus,therewon'tbemanyfamilieswith...")
- 问题详情： WhenChristmastimeisuponus,therewon'tbemanyfamilieswithoutsometypeofChristmastree.Mostwillchoosebetweenacutpinetreeandanartificialplastictree.ArtificialChristmastreesareusuallymadefromsteelandtheplasticknownasPVC.ToproduceonekilogramofrawPV...
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