Accordingtothetext．whichofthefollowingisNOTtr ue?
A．Soilformsfromweatheredrockontheearthsurface．
B．Thedeeperlayerofsoilisdarkerincolourthant}lesurfacesoil．
C．Airpollutionispartiallyresponsibleforacidsoil．
D．Groundwatertendstocarryawaynutr ientsforplantgrowth．
正确答案：B
