He lost his health, and（ ）his difficulties increased.

He lost his health, and（ ）his difficulties increased.
A、therefore
B、nonetheless
C、furthermore
D、otherwise
【正确答案】：A
【题目解析】：本题考查副词辨析。therefore“因此，所以” ， nonetheless“尽管如此”， furthermore“此外”， otherwise“否则”。句意：他身体虚弱，因此更增加了他的困难。故选A。