单选题
When and by whom this tiny island country ______ a mater of debate among archeologists.
A、
was first settled is
B、
was the first settled was
C、
settled first is
D、
the first settling was
【正确答案】
A
【答案解析】
句意：考古学家们对于这个小岛国是什么时候又是谁建立的问题一直争论不休。此句是一个主语从句，when and by whom...settled是句子的主语，is是谓语。
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