下面是出国留学网小编为大家整理的2017年GRE阅读题练习：枕状熔岩，欢迎大家阅读。 P1 Volcanic rock that forms as fluid lava chills rapidly is called pillow lava. This rapid chilling occurs when lava erupts directly into water (or beneath ice) or when it flows across a shoreline and into...