题目选项分析

Since he did not experience any symptoms until adulthood and had been affected by facial paralysis early on in the course of his illness Franklin Delano Roosevelt, whose death was originally attributed to complications arising from polio, may actually have suffered from symptoms related to Guillain-Barre syndrome.

Because he had not experienced any symptoms until adulthood and was affected by facial paralysis early on in the course of his illness Franklin Delano Roosevelt, whose death was originally attributed to complications arising from polio, may actually have suffered from symptoms related to Guillain-Barre syndrome.