语法与词汇 Many types of rock are _____ from volcanoes as solid, fragmentary material.
【正确答案】 C
【答案解析】句意：许多类型的岩石都是由火山喷出的固体碎片。eject喷射；喷出。fling抛；掷。propel推进；驱使。inject注射。