8,7,8,7,8.1,7.9,6,6,相同,3,5,3,5,6.3,6.5,大,小数,大,0.7,0.3,0.7,0.8,2.4,1.7,6.8元,4.5元,2.6元,答:牙膏最贵,牙刷最便宜.,王芳,张静,李晴,5,6,0,1,
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