Those physicians and specialists ______in their fight against heart disease.

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问题 Those physicians and specialists ______in their fight against heart disease.

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

答案D

解析 那些内科医生和专家们在同心脏病的斗争中取得了突破。break down意为“损坏;(健康等)垮掉,崩溃”; break off 中断,突然停止”;break out“爆发;逃脱”;break through“突围;取得突破性成就”。
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