单选题 Physicists' recent investigations of the decay of the vacuum, as described in the passage, most closely resemble which of the following hypothetical events in other disciplines?

A、 On the basis of data gathered in a carefully controlled laboratory experiment, a chemist predicts and then demonstrates the physical properties of a newly synthesized polymer.
B、 On the basis of manipulations of macroeconomic theory, an economist predicts that, contrary to accepted economic theory, inflation and unemployment will both decline under conditions of rapid economic growth.
C、 on the basis of a rereading of the texts of Jane Austen' s novels, a literary critic suggests that, contrary to accepted literary interpretations, Austen's plots were actually metaphors for political events in early nineteenth-century England.
D、 on the basis of data gathered in carefully planned observations of several species of birds, a biologist proposes a modification in the accepted theory of interspecies competition.

【正确答案】 B

【答案解析】[解析]物理学家对真空衰减的研究和下列哪个假设相似：在宏观经济学理论下，经济学家预测，和通常人们普遍认同的经济理论相反，在经济快速增长的条件下，失业率和通货膨胀都减小。和文章的理论相同：If the reduction in energy is great enough，an eletron and positron will be instantly created．如果能量减少的很多，那么负电子和正电子同时产生。故应选B。