A、Helping fight brain-wasting disease all over the world.B、Helping fight infect

游客2023-06-20  5

问题

选项 A、Helping fight brain-wasting disease all over the world.
B、Helping fight infectious diseases in poorer countries.
C、Helping fight poverty in the third world.
D、Helping fight ageing problems all over the world.

答案 B

解析
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