问答题 Destruction of the world's rain forests, global warming, and the depletion of the ozone layer are just some of the problems that will endanger mankind in the coming decades.
【正确答案】
【答案解析】世界雨林的毁灭、全球变暖以及臭氧层的减少仅仅是未来十年间危及人类的少数几个问题。