原帖由 happyjingjing92 于 2006-8-3 19:05 发表
due to persistent inbreeding.selfpollinating plants have genetically more uniform than crosspollinated plants,which harbor more genetic variability.
A. due to
B. have
C.which
D.varibility
这 ...
原帖由 happyjingjing92 于 2006-8-3 19:08 发表
Adressing themes that were unique american ,the poet Walt Whitman celebrated the lives of ordinary people
A.addresing
B.unique
C.celebrated
D.ordinary people
请问这个B项应该怎么改啊?
原帖由 rosalind1984 于 2006-8-4 19:15 发表
2002.9 34.Folktale adaptations from (oral tradition) to (other forms) of expression,(notably)print and film,(have made)for more than three centuries.
原帖由 duowq 于 2006-8-8 22:15 发表
27 The phrase “this regionalization scheme” in line 19 refers to the
(A) movements of glacial deposits
(B) patterns of natural vegetation
(C) human modification of the North American environm ...