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  3. In the Arctic Circle, it is not that Eskimos lack ability or industry, but the surroundings restrict constructive effort to the

In the Arctic Circle, it is not that Eskimos lack ability or industry, but the surroundings restrict constructive effort to the

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问题     In the Arctic Circle, it is not that Eskimos lack ability or industry, but the surroundings restrict constructive effort to the barest necessities of existence. This effectually retards progress to higher development.
    Agriculture is impossible all along the thousands of miles of the north shore. The only wood is such as drifts in. Other than this driftwood, the only available building materials are snow, ice, stone, and bones of animals. All of these have been used for habitations and storage places, differing in various tribes according to the requirements and skill of the workers.
    The lack of necessary timbers to build walls and span wide spaces is probably one reason why these tribes construct their houses at least partly beneath the surface of the ground. This device also makes the houses more impervious (不能渗透的) to the cold.
    Most of us are inclined to think that the Eskimo lives always in an igloo or snow house. This is not entirely true. After the long cold winter, the family is very likely to move, when the weather permits, into a tent of sealskin. The actual construction of such a tent is similar to that used by other, more southerly tribes and will be described later.
    The snow house, however, is an interesting and unique habitation. Our summer campers will not build with snow, but the delicate art is worth recording and some of our winter camps in the mountains might try to make snow houses.
Why do Eskimos build their houses partly under the ground?
选项 A、They like to live under the ground.
B、They are short of essential materials for walls and roofs.
C、They want their houses less affected by the cold.
D、Both B and C
答案D
解析 本题是一道具体细节题。问为什么爱斯基摩人将他们的住房部分建造在地下。利用查阅式阅读法，我们可以在文章的第三段中找到相关信息，第三段第一句提到了第一方面的理由：缺乏必要的木材建墙和架于宽阔的空间之上，是这些部落将住处部分建于地下的原因之一。第二句提到了第二方面的原因：这种设计也使得寒冷更难以侵入房内。因此，爱斯基摩人将房屋部分建造在地下有两个原因，一是他们缺乏建造墙和房梁的主要材料；二是他们想要房屋少受严冬的侵扰。所以，本题的正确答案应是D。
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