Dr. Smith failed many times but he finally ______ to find a successful way to solve the problem.

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问题 Dr. Smith failed many times but he finally ______ to find a successful way to solve the problem.

选项 A、broke off
B、broke down
C、broke out
D、broke through

答案D

解析本题为词组辨析题。break off意为“停止说话，中断”；break down意为“出毛病，抛锚”； break out意为战争，火灾的突然“爆发，发生”；break through意为“突破，征服”。本句大意为：史密斯博士失败了多次，但他最终找到了一条解决问题的成功之路。

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英语

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