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問題詳情：閱讀理解；請認真閱讀下列短文，從短文後各題所給的A、B、C、D四個選項中，選出最佳*。Didyouknowthefollowingfactsaboutwater?A．ThereisaboutthesameamountofwateronEarthnowastherewasmillionsofyearsago.B．Nearly...