[解析]
(1)段落大意题。根据文章第一段As part of a post﹣fire response and recovery project,the Debris Flow Hazard Team (泥石流危害小组) is engaging in several studies to better understand the drivers of post﹣fire debris flows and improve post﹣ fire hazard assessments across the Pacific Northwest. (作为火灾后响应和恢复项目的一部分,泥石流危险小组正在进行几项研究,以更好地了解火灾后泥石流的驱动因素,并改善整个太平洋西北地区的火灾后危险评估。)可知,第一段讲述了开展这项研究的原因。故选D。
(2)细节理解题。根据文章第三段Researchers have begun monitoring post﹣ fire debris﹣ flow activity in wetter places to answer the question.Post﹣fire monitoring involves measuring the rainfall within the burned areas and recording the flow response after rainstorms. (研究人员已经开始监测潮湿地区火灾后的泥石流活动,以回答这个问题。火灾后监测包括测量燃烧区域内的降雨量,并记录暴雨后的流量响应。)可知,目前的研究关注湿度更高的区域。故选C。
(3)词义猜测题。根据文章第四段中的both similarities and differences in debris﹣flow processes between the areas with higher humidity (湿度) and drier areas. (高湿度地区和干旱地区泥石流过程的异同。)可知,高湿度地区和干燥地区的泥石流过程既有相似之处,也有不同之处是最近的数据所显示或揭示的结果。bespeaks是"揭示,显示"的意思。A.Replaces替换;B.Reveals揭示,显示;C.Recognizes承认;D.Recommends建议。B与划线词意思相近。故选B。
(4)推理判断题。根据文章最后一段Other frequently asked questions after wildfires are:How far will debris flows travel?What will be impacted?And how long will the burned areas remain hazardous?These questions are presently not addressed in current debris﹣ flow hazard assessments,but the researchers are doing research to provide answers soon. (野火后的其他常见问题是:泥石流会传播多远?会受到什么影响?被烧毁的区域会持续危险多久?目前,这些问题在泥石流灾害评估中尚未得到解决,但研究人员正在进行研究,以尽快提供答案。)可以推断,接下来的研究可能会关注泥石流可能造成的影响。故选B。