In the traditional Japanese household, most clothing could be packed (flatly, and so it was not necessary to have elaborate closet facilities.)
(A)flatly, and so it was not necessary to have elaborate closet facilities
(B)flat, and so elaborate closet facilities were unnecessary
(C)flatly,and so there was no necessity for elaborate closet facilities
(D)flat, there being no necessity for elaborate closet facilities
(E)flatly,as no elaborate closet facilities were necessary
答案B,确实没有比B好的了,但B中的so做什么成分，好像so elaborate closet facilities were unnecessary就可以了，so 做连词，前后因果关系也明确。
E11-89,
(Unlike most warbler species, the male and female blue-winged warbler are very difficult to tell apart.)
(A)Unlike most warbler species, the male and female blue-winged warbler are very difficult to tell apart.
(B)Unlike most warbler species,the gender of the blue-winged warbler is very difficult to distinguish.
(C)Unlike those in most warbler species, the male and female blue-winged warbler are very difficult to distinguish
(D)It is very difficult, unlike in most warbler species, to tell the male and female blue-winged warbler apart.
(E)Blue-winged warblers are unlike most species of warbler in that it is very difficult to tell the male and female apart.
During the Renaissance, scholars were uncertain as to the location of Troy, and by the eighteenth century many historians (doubted that Troy had ever exist.)
A.doubted that Troy had ever existed
B.doubt that Troy has ever existed
C.were in doubt as to the existence of Troy
D.were doubtful concerning Troy's existence
E.had doubts about Troy's esisting
答案是A,解释说A、C、D都可以，但A最简洁，但我觉得C与原句结构平行，were uncertain as to the location of Troy..., were in doubt as to the existence of Troy...,不知道怎样在concise和parallel之间选择？
