When he arrived in America, he was surprised to learn that the mayor of the city was Chinese by ______.
A、
nature
B、
resource
C、
origin
D、
source
【正确答案】
C
【答案解析】
origin起源，来源 by nature天生，就其本性而言 resource资源 source源[泉]，发源地；来源，出处
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