题目选项分析

The relative prosperity of the first years of the twentieth century came to a halt in 1907 when drains on the money supply revealed a weak national infrastructure of banking and credit and precipitated an economic crisis that lasted nearly a year.

The relative prosperity of the first years of the twentieth century came to a halt in 1907 when drains on the money supply, revealing a weak national financial infrastructure of banking and credit, it precipitated an economic crisis that lasted nearly a year.