The BRICS countries have to be a source of global economic development and essential to g

问题补充：

The BRICS countries have to be a source of global economic development and essential to generations.

A. turned out

B. picked out

C. put out

D. taken out

答案：

(答案→)A. turned out

B. picked out

C. put out

D. taken out

解析：A. turned out结果是，证明是，B.picked out挑选出，辨认出，理解，C. put out扑灭，D. taken out 拿出，句意：金砖国家已被证明是一种全球经济发展的来源和对几代人都是基本的。所以选A。