单选题
3.
In his biography, the old scientist is described as a very ______ truth seeker.
A、
infectious
B、
prosperous
C、
industrious
D、
generous
【正确答案】
C
【答案解析】
industrious勤勉的；infectious传染性的；prosperous繁荣的；generous慷慨的，大方的。
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