第29题: [单项选择]Humidity is so intense in some parts of the tropics that Europeans find they are unable to ______ it. A. maintain B. persist C. endure D. sustain 参考答案:C 答案解析:[解析] 根据题干可判断,所填词应是一个及物动词,故先排除不及物动词persist。[C]endure意为“容忍,忍受”时,常与Can't等否定词语连用,表示无法忍受某种不好的天气、环境等,符合题意,