单选题
One of the most beautiful natural wonders in the United States must certainly be the Grand Canyon, ______ in Arizona.
A、
and located
B、
whose location
C、
is located
D、
which is located
【正确答案】
D
【答案解析】
[分析] 结构识别 本句考察的是非限定性定语从句,因此只有选项D正确。
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