【单选题】

Questions 18-20 are based on the following monologue introducing the consequences of the Gulf War. You now have 15 seconds to read Questions 18-20. What was the good news for scientistsA．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、