The new composite material exhibits an extraordinary degree of ______, which enables it to be molded into almost any shape.
 
【正确答案】 A
【答案解析】 plasticity“可塑性”;resonance“洪亮,共鸣”;inertness“惰性”;buoyancy“浮力”。空格填入的名词,表示composite material(复合材料)的性质。逗号后面的从句与空格构成修饰关系,所以空格填入可以be molded into almost any shape(被塑造成任意的形状)的语义,故答案为A。