【正确答案】 1、N    

【答案解析】在文章的“Soil and Nutrient Recycling”一段中说道：“When tropical forests are cut and burned，heavy rains can quickly wash the released nutrients away，leaving the soil even more impoverished．”从中得知，大雨把营养冲走后，土壤会变得更加贫瘠而不是更加肥沃。故答案为No。