Inthepasttwentyyear的精選

問題詳情：Choosethebestanswer(根據短文內容，選擇最恰當的*)Inthepasttwentyyears,ridingbicycleshasbecomeincreasinglypopularamongpeopleofallages.BicycleshavelongplayedanimportantpartinthelivesofAmericanyouth...