For protection from thesummer sun,the Mojave lived in open-sided,flat-topped dwellings known as shades,each a roof of poles and arrowweed supported by posts set in a rectangle.
A. each a roof of poles and arrowweed
B. each a roof of poles and arrowweed that are being
C. with each being a roof of poles and arrowweed
D. with roofs of poles and arrowweed to be
E. with roofs of poles and arrowweed that are
答案选A,想不通,我选了E,题目意思都不太明白,请各位大侠帮忙看看
refer to:http://forum.chasedream.com/dispbbs.asp?BoardID=23&ID=55193;
http://forum.chasedream.com/dispbbs.asp?boardID=23&ID=65908&page=1;
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