A geodesic dome is basically a spherical structure created from rectangles. Domes are the environment-friendly building.

admin2012-10-11 22

问题 A geodesic dome is basically a spherical structure created from rectangles.
Domes are the environment-friendly building.

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答案Y

解析参见本文倒数第四段第二句：This is quite an improvement and helps save the environment from wasted energy．

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大学英语六级

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