6、cleanupBlueWaterBeach.可知,在蓝水沙滩你能清理干净沙滩。即该题选B.【难度】较易B阅读下列短文,从每小题所给的A、B、C、D四个选项中选出最佳选项。There are many colors in nature. But do you know if a color has weight? I think you’ll say “no”. But I amafraid you are wrong. If you don’t believe, you may do a small experiment.First,
7、put two objects with the same weight into two boxes. Then cover the box. Third, wrap one box with ared piece of paper, the other with a white piece of paper. OK. Now hold the boxes with your hand one by one.It iscertain that you will think the red one is