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听力习题：

　　33.

　　A. The threat of poisonous desert animals andplants.

　　B. The exhaustion of energy resources.

　　C. The destruction of oil wells.

　　D. The spread of the black powder from the fires.

　　34.

　　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.

　　35.

　　A. To restore the normal production of the oil wells.

　　B. To estimate the losses caused by the fires.

　　C. To remove the oil left in the desert.

　　D. To use the oil left in the oil lakes.

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