单选题
The best known of all the Arctic birds, ______.
A、
birdwatchers favor ptarmigans
B、
being ptarmigans' and birdwatchers' favorites
C、
favored by both ptarmigans and birdwatchers
D、
ptarmigans are a favorite of birdwatchers
【正确答案】
D
【答案解析】
前半部分是后半句的主语“ptarmigans”的同位语。
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