{{B}}quEstions 18 to 20 ArE BAsED on thE Following tAlk.{{/B}}

A、thE unDErgrounD oil rEsourCEs hAvE not BEEn AFFECtED、
B、most oF thE DEsErt AnimAls AnD plAnts hAvE mAnAgED to survivE.
C、thE oil lAkEs soon DriED up AnD stoppED EvAporAting.
D、thE unDErgrounD wAtEr rEsourCEs hAvE not BEEn pollutED、