For protection from the summer sun, the Mojave lived in open-sided, flat-topped dwellings known as shades, each a roof of poles and arrow weed supported by posts set in a rectangle.
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Aeach a roof of poles and arrow weed
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Beach a roof of poles and arrow weed that are being
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Cwith each being a roof of poles and arrow weed
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Dwith roofs of poles and arrow weed to be
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Ewith roofs of poles and arrow weed that are
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正确答案: A