A-A+
Dr. Wang has made much contribution to the the
问题详情
Dr. Wang has made much contribution to the theories of modem physics at the ______ of his health.
A．cost
B．disposal
C．mercy
D．expenditure请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：A
解析：考查固定搭配。at the cost of“以……为代价”；at me disposal of“由……处置”；at the 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。
