Ayoungwomaninher20swassittingonthetrain,nexttohermoth...
问题详情： Ayoungwomaninher20swassittingonthetrain,nexttohermother.Theybothlookedtired1_excited.Theyoungwomanwaslookingoutfromthetrain'swindow.Suddenly,sheshouted:"Mom,look,thetreesarebehindus!"He...