PREP新发现一题！

The single family house has constructed by the Yana, a Native American people who lived in what is now Northern California, was conia in shape, its framework of poles laid with slabs of bark, and banked with dirt to a height of 3 to 4 feet.

A. banked with dirt to a height of 3 to 4 feet.

B. banked with dirt as high as that of

C. banked them with dirt to a height of

D. was banked with dirt as high as

E. was banked with dirt as high as that of

ANSWER：A

也是考平行的，大家看一下吧

这题GWD里出现过.

GWD-10-Q22:GWD-11-14 (A)

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.