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