单选题：How does the Arctic fox survive in winter?

题目分类：理工类
题目类型：单选题
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题目内容：

How does the Arctic fox survive in winter? A．It leaves its burrow and migrates to a warmer lan
B．It sleeps soundly inside its burrow in winte
C．It lives on rabbits or field mic
D．It stays in its burrow and lives on the food stored ther

参考答案：

答案解析：

两个以上的物品环绕一个中心组合在一起。两边平衡，重量或吸引力(包括形状、色彩等方面的吸引力)都有同等的分量，使人产生一种

两个以上的物品环绕一个中心组合在一起。两边平衡，重量或吸引力(包括形状、色彩等方面的吸引力)都有同等的分量，使人产生一种宁静的感觉，这就叫做均衡。根据定义，下

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