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题库 / Prep2007E2-SC-16
The single-family house constructed by the Yana, a Native American people who lived in what is now northern California, was conical in shape, its framework of poles overlaid with slabs of bark, either cedar or pine, and banked with dirt to a height of three to four feet.
banked with dirt to a height of
banked with dirt as high as that of
banked them with dirt to a height of
was banked with dirt as high as
was banked with dirt as high as that of
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AC 区分：
首先该句的and，后“堆积灰尘”应该是与前面的“”overlaid with slabs of bark“对等的，bank对应overlaid, 如果加be动词，则意思上与”was conical in shape“并不平行，所以DE不对
C中的them代表一个复数，而非”its framework of poles“，错误
B中的that找不到一个对应的代指，同时，as XX as应该不能用于一个范围
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