of course it does. After all, if you want, take a can of coke

of course it does. After all, if you want, take a can of coke

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送交者: steven 于 2007-08-17, 12:15:10:

回答: 未包括含量由 4U4luC2 于 2007-08-17, 12:06:40:

to a chem. lab, you know all the elements and their quantities.