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  3. Why have polar bear sightings become increasingly common? [originaltext]Polar be

Why have polar bear sightings become increasingly common? [originaltext]Polar be

游客2023-12-28  24
问题 Why have polar bear sightings become increasingly common?
Polar bear sightings are becoming increasingly common—with the bears apparently venturing south from their far-northern habitat in search of food.
选项 A、Because they come out for the sun.
B、Because they migrate to the south.
C、Because they come out for the ice.
D、Because they come out searching for food.
答案 D
解析 根据原文，人们之所以越来越常见到北极熊，显然是因为它们冒险出来觅食，因此，正确答案是D。
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