语法与词汇25.By studying obscure demographic and economic______, he deduced that the Soviets were in crisis—and spending a far bigger slice of its national income on defense than anyone had suspected.
【正确答案】
A
【答案解析】本题考查名词辨析。根据studying．．．demographic and economic和deduced判断，“苏联正处于危机之中”是通过研究人口和经济数据推断出的结果，data(尤指可用于分析的资料，数据)符合语义，故答案为[A]项。mania意为“狂热，癖好”；nostalgia意为“乡愁”；severity意为“严重程度，严重性”。