Didyouknowt的精选

问题详情：阅读理解；请认真阅读下列短文，从短文后各题所给的A、B、C、D四个选项中，选出最佳*。Didyouknowthefollowingfactsaboutwater?A．ThereisaboutthesameamountofwateronEarthnowastherewasmillionsofyearsago.B．Nearly...