专四

单选题Dr. Wang has made much contribution to the theories of modem physics at the __________ of his health.

参考答案：A进入在线模考
】【译文】王博士牺牲自己的健康为现代物理学理论的形成做出了许多贡献。
【解析】考查固定搭配。at the cost of“以……为代价”；at me disposal of“由……处置”；at me mercy of“任……摆布”；expenditure不与at搭配，expenditure of表示“......的消费，支出”。根据词义可知，应选A。

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