Many thousands have benefited ______the new medical systems.

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问题 Many thousands have benefited ______the new medical systems.

选项 A、on
B、in ’
C、to
D、from

答案D

解析句意：数千人已经从新的医疗系统中受益。词语搭配题。benefit from为固定搭配，意为“从……中受益”。故选D。

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