单选题 Although ordinarily skeptical about the purity of Robinson's motives, in this instance Jenkins did not consider Robinson's generosity to be ______ consideration of personal gain.

A. lacking in
B. contrary to
C. alloyed with
D. mitigated by

【正确答案】 C

【答案解析】(alloyed with搀杂着)。句意为：尽管詹金斯通常怀疑鲁滨逊动机的纯洁性，但是，在这个事例中，他并不认为鲁滨逊的慷慨搀杂着个人的私利。A．lacking in缺乏； B．contrary to与……相反；D．mitigated by被……减轻。